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Brief  Introduction 
 KW is professionally engaged in diamond bit research & development, design, manufacturing, sales and technical services. It possesses not only advanced diamond bit design & manufacturing techniques but also advanced manufacturing equipment. It has high-technology talents coming back from abroad and high-qualified skilled technicians engaged in diamond bit manufacturing for more than 20 years.
We can make various kinds of diamond drill bits and core bits form 4″ to 171/2″, and can research, develop, design and manufacture special purpose diamond bits according to customer’s requirements.
It has established perfect product quality systems, and has been certified under ISO9001:2000 Quality System. We design diamond bit by using self-developed advanced Computer Aided Design (CAD), PRO-E 3 D design, and computer full size drill bit resultant force & single cutter force and work analysis computing technologies. The diamond bits made by us are completely in compliance with API and SY/T5217-2000 Standards.
It always carries forward its concepts of  “Good Faith, Customer Orientation, High Quality, Perfection & Innovation, and Contributions & Honors”. We aim to provide our customers with high quality products and excellent services, with highest performance-price ratio products on purpose. It will grow and develop with its customers.




 


Diamond Bit Nomenclature Guide


Diamond Core Bit:Number of Blades、Formation Grade、Cutter Size、Crown Profile、Character


81/2  F   4   4    5   6   HY


                                 Character:A:Auto-Antiwhirt   H:Mixed cutter
B:Bi-Center           M:Milling/Grind
R:Reaming cutter       D:Aid cutter
Y:decompression cutter  S:Side/Directional  
T:tine & round cutter    P:Character design
 U:importation cutter    E:Part of importation cutter
                               -H:horizontal well
Crown Profile 1~7 parabola(long—short)
8— round  9— taper  0— abnormity


cutters size:Ø16  PDC cutters
PDC Cutters   TSP Cutters   Nature Diamond(/ct)
Ø8 —2       3—3         10~12—9
Ø10 —3      4—4             8—8
、                                 Ø13—4       5—5             5—5  
Ø16—5       6—6             4—4 
Ø19—6       8—8             2—2 
Ø25—8       10—9            1—1 
>Ø25—9       
Formation Grade:4 class (1~9 class))
                                     
                            Number of Blades:4  (3~9  0—10  1—11  2—12 )
                                     
                         Type:PDC Type     TSP Type    Nature Diamond Type
                              F—Flurry    S—TSP cutter    D—Nature Diamond
                              G—Gale
                              W—Whirlwind
                              T—Typhoon
                              Bits size(inch):OD
 






 


Diamond Core Bit Nomenclature Guide


Diamond Core Bit:Number of Blades、Formation Grade、Cutter Size、Crown Profile




8 1/2×4    PC   2   4   4    9  


                              


Crown Profile 1~7 parabola(long—short)
8— round  9— taper  0— abnormity


cutters size:Ø13  PDC cutters
PDC Cutters   TSP Cutters   Nature Diamond(/ct)
Ø8 —2        3—3         10~12—9
Ø10 —3       4—4             8—8
、                                 Ø13—4        5—5             5—5
Ø16—5        6—6             4—4
Ø19—6        8—8             2—2
Ø25—8       10—9             1—1
>Ø25—9       


Formation Grade:4 class (1~9 class)
                                     
                           Number of Blades:4  (3~9  0—10  1—11  2—12 ) 
                                     
                  Type:PDC Type  TSP Type  Nature Diamond Type  Impregnated Type   
PC        SC         DC               IC
                                                                 
Bits Size(inch):OD×ID
                                     














                                                   
Bits Selection Guide


Formation Rock Type Formation Grade Bits Type
Ultra soft formations with low compressive strength and sticky layers Humous  Gumbo Clay  Marl
1~2 ×4××
Soft formations with low compressive strength and high drill ability Marl   Salt Anhydrite  Shale 2~3 ×4××
Soft to medium formations with low compressive strength Sand  Shale  Chalk 2~4 ×4××
Soft-medium to hard formations with high compressive strength and low abrasiveness Shale  Mudstone  Limestone  Sandstone 3~5 ×5××
Hard and dense formations with high compressive strength but not abrasive Shale  Limestone Anhydrite 4~6 ×5××
×6××
Hard dense and abrasive formations with ultra high compressive strength Siltstone  Sandstone  Mudstone 6~8 ×6××
×8××
Ultra hard and abrasive formations Quartzite  Volcanic 8≥ ×8××

                                                   
Bits Type/IADC code:F4446 / M432



Short parabola Crown Profile,Ø13 cutters,Power of counterpoise design;
reparable nozzles & immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes hard;
Such as clay,marl,sand,shale and salt。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
3 7/8 325 38 4F 16 4 23/8REG 5-25 90-360 8-20
41/2 340 38 4F 20 4 27/8REG 5-30 90-360 8-20
57/16 340 38 2R+2F 23 4 31/2REG 5-35 90-360 10-24
57/8 360 38 2R+2F 28 4 31/2REG 10-35 90-360 12-28
6 380 38 4R 29 4 31/2REG 10-40 90-280 15-30
61/2 380 38 4R 29 4 31/2REG 10-40 90-280 15-30




 
 Bits Type/IADC code:F4455D / M422






























Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
Adopt aid cutters design;
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes hard;
Such as clay,marl,sand,shale and salt。




DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 425 55 4R 50 4 41/2REG 15-85 90-360 28-40
81/2 425 55 4R 54 4 41/2REG 20-90 90-360 32-44
9 480 65 4R 66 4 41/2REG 20-105 90-360 34-46
91/2 480 65 5R 72 4 65/8REG 22-110 90-280 38-50


 
Bits Type/IADC code:F4455HB / M422


Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
reparable nozzles or immobility nozzles,gage of smooth design;
Adopt aid cutters design;
hrough-hole diameterØ210,Expand the hole diameter Ø220,broaching bit;
Such as suitable for Formation Grade of four classes hard;
Such as clay,marl,sand,shale and salt。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
83/4 445 55 4R 60 4 41/2REG 20-90 90-360 32-44










 
Bits Type/IADC code:F4456 HY/ M422


Short parabola Crown Profile,Ø16 & Ø19 cutters,Power of counterpoise design;
Mixed cutter & decompression cutters design;
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes hard ;
Such as clay,marl,sand,shale and salt。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 425 55 4R 52 4 41/2REG 15-85 90-360 28-40
81/2 425 55 4R 56 4 41/2REG 20-90 90-360 32-44
9 460 65 4R 66 4 41/2REG 20-105 90-360 34-46
91/2 460 65 5R 72 4 65/8REG 22-110 90-280 38-50





Bits Type/IADC code:F4465Y /IADC M432
































Short parabola Crown Profile,Ø19 cutters,Power of counterpoise design;
decompression cutters design;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes hard;
Such as clay,marl,sand,shale and salt。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 425 55 4R 52 4 41/2REG 15-85 90-360 28-40
81/2 425 55 4R 56 4 41/2REG 20-90 90-360 32-44
9 460 65 4R 66 4 41/2REG 20-105 90-360 34-46
91/2 460 65 5R 72 4 65/8REG 22-110 90-280 38-50








Bits Type/IADC code:F4466D / M422






























Short parabola Crown Profile,Ø19 cutters,Power of counterpoise design;
Adopt aid cutters design;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes hard ;
Such as clay,marl,sand,shale and salt。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 425 55 4R 50 4 41/2REG 15-85 90-360 28-40
81/2 425 55 4R 56 4 41/2REG 20-90 90-360 32-44
9 460 65 4R 64 4 41/2REG 20-105 90-360 34-46
91/2 460 65 5R 70 4 65/8REG 22-110 90-280 38-50










 Bits Type/IADC code:F5556 / M522


































Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes hard;
Such as Shale,Limestone,Sand,Anhydrite。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 435 55 5R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 5R 59 5 41/2REG 20-100 90-240 32-44
91/2 460 65 5R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 7R 140 5 65/8REG 25-145 70-180 46-80










 Bits Type/IADC code:F5556D / M522
































Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
Adopt aid cutters design
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes hard;
Such as Shale,Limestone,Sand,Anhydrite。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 435 55 5R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 5R 59 5 41/2REG 20-100 90-240 32-44
91/2 460 65 5R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 7R 140 5 65/8REG 25-145 70-180 46-80








 Bits Type/IADC code:F5558DR / M522
































Rond Crown Profile,Ø16 cutters,Power of counterpoise design;
Adopt aid cutters design
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes hard;
Such as Shale,Limestone,Sand,Anhydrite。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 435 55 6R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 6R 59 5 41/2REG 20-100 90-240 32-44
91/2 460 65 7R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 9R 140 5 65/8REG 25-145 70-180 46-80


 


  


Bits Type/IADC code:F5558DR-H / M522
































Rond Crown Profile,Ø16 cutters,Power of counterpoise design;
Adopt aid cutters design
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes hard;
Such as Shale,Limestone,Sand,Anhydrite。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 435 55 7R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 7R 59 5 41/2REG 20-100 90-240 32-44
91/2 460 65 7R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 9R 140 5 65/8REG 25-145 70-180 46-80






 
Bits Type/IADC code:F5566 / M522


































Short parabola Crown Profile,Ø19 cutters,Power of counterpoise design;
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes hard;
Such as Shale,Limestone,Sand,Anhydrite。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 435 55 5R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 5R 59 5 41/2REG 20-100 90-240 32-44
91/2 460 65 5R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 7R 140 5 65/8REG 25-145 70-180 46-80








 Bits Type/IADC code:F5566D / M522
































Short parabola Crown Profile,Ø19 cutters,Power of counterpoise design;
Adopt aid cutters design;
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes hard;
Such as Shale,Limestone,Sand,Anhydrite。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 435 55 5R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 5R 59 5 41/2REG 20-100 90-240 32-44
91/2 460 65 5R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 7R 140 5 65/8REG 25-145 70-180 46-80








 Bits Type/IADC code:F5556 HY/ M522






























Short parabola Crown Profile,Ø16 and Ø19 cutters,Power of counterpoise design;
Mixed cutter & decompression cutters design;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand, Anhydrite。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 435 55 5R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 5R 59 5 41/2REG 20-100 90-240 32-44
91/2 490 65 5R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 7R 106 5 65/8REG 25-145 70-180 46-80










 Bits Type/IADC code:F6556/ M522


































Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
reparable nozzles & tine nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand, Anhydrite。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 435 55 3R+3F 53 6 41/2REG 15-90 90-240 28-40
81/2 435 55 3R+3F 59 6 41/2REG 20-100 90-240 32-44
91/2 490 65 7R 73 6 65/8REG 22-115 90-210 38-50
121/4 530 75 9R 106 6 65/8REG 25-145 70-180 46-80










 Bits Type/IADC code:F6556DR/ M522
































Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
Adopt aid cutters design;
reparable nozzles & tine nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand, Anhydrite。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 435 55 3R+3F 53 6 41/2REG 15-90 90-240 28-40
81/2 435 55 3R+3F 59 6 41/2REG 20-100 90-240 32-44
91/2 490 65 7R 73 6 65/8REG 22-115 90-210 38-50
121/4 530 75 9R 106 6 65/8REG 25-145 70-180 46-80








 Bits Type/IADC code:F6556T/ M522


























Short parabola Crown Profile,Ø16 round cutters & tine cutters,Power of counterpoise design;
Round cutters & tine cutters mixed design;
reparable nozzles & immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand, Anhydrite。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 435 55 3R+3F 53 6 41/2REG 15-90 90-240 28-40
81/2 435 55 3R+3F 59 6 41/2REG 20-100 90-240 32-44
91/2 490 65 7R 73 6 65/8REG 22-115 90-210 38-50
121/4 530 75 9R 106 6 65/8REG 25-145 70-180 46-80










 Bits Type/IADC code:G4456 HY/ M422




























Short parabola Crown Profile,Ø16 & Ø19 cutters,Power of counterpoise design;
Mixed cutter and decompression cutters design;
helix blade,helix cutters;
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes;
Such as clay,marl,sand,shale and salt。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 425 55 4R 50 4 41/2REG 15-85 90-360 28-40
81/2 425 55 4R 56 4 41/2REG 20-90 90-360 32-44
9 480 65 4R 64 4 41/2REG 20-105 90-360 34-46
91/2 460 65 4R+1F 70 4 65/8REG 22-110 90-280 38-50








 Bits Type/IADC code:G4455D / M422




























Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
Adopt aid cutters design;
helix blade,helix cutters;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes;
Such as clay,marl,sand,shale and salt。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 425 55 4R 52 4 41/2REG 15-85 90-360 28-40
81/2 425 55 4R 56 4 41/2REG 20-90 90-360 32-44
9 460 65 4R 66 4 41/2REG 20-105 90-360 34-46
91/2 460 65 5R 72 4 65/8REG 22-110 90-280 38-50








 Bits Type/IADC code:G5556 / M522




























Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
decompression cutters design;
helix blade,helix cutters;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand, Anhydrite。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 435 55 5R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 5R 59 5 41/2REG 20-100 90-240 32-44
91/2 490 65 5R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 7R 106 5 65/8REG 25-145 70-180 46-80








 Bits Type/IADC code:G5566 / M522










Short parabola Crown Profile,Ø19 cutters,Power of counterpoise design;
helix blade,helix cutters;
reparable nozzles ,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand,Anhydrite。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 435 55 5R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 5R 59 5 41/2REG 20-100 90-240 32-44
91/2 490 65 5R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 7R 106 5 65/8REG 25-145 70-180 46-80




 Bits Type/IADC code:G5568S / M521
































Rond Crown profile,Ø19 cutters,Power of counterpoise design;
helix blade,helix cutters;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand,Anhydrite。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 405 55 5R 47 5 41/2REG 15-85 90-360 28-40
81/2 405 55 5R 53 5 41/2REG 20-90 90-360 32-44
91/2 460 65 5R 67 5 65/8REG 22-110 90-280 38-50
121/4 500 75 7R 91 5 65/8REG 25-125 70-240 46-80








 Bits Type/IADC code:G4468SR / M421
































Rond Crown profile,Ø19 cutters,Power of counterpoise design;
helix blade,helix cutters;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes;
Such as Shale,Limestone,Sand,Anhydrite。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 395 40 4R 47 4 41/2REG 15-85 90-360 28-40
81/2 395 40 4R 53 4 41/2REG 20-90 90-360 32-44
91/2 440 40 4R 67 4 65/8REG 22-110 90-280 38-50
105/8 480 40 6R 91 4 65/8REG 25-125 70-240 46-80








 Bits Type/IADC code:G5568SR / M521
































Rond Crown profile,Ø19 cutters,Power of counterpoise design;
helix blade,helix cutters;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand,Anhydrite。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
8 395 40 5R 47 5 41/2REG 15-85 90-360 28-40
81/2 395 40 5R 53 5 41/2REG 20-90 90-360 32-44
91/2 440 40 5R 67 5 65/8REG 22-110 90-280 38-50
105/8 480 40 7R 91 5 65/8REG 25-125 70-240 46-80








  Bits Type/IADC code:PC2449 / M431




































Cone crown profile of short,Ø13 cutters,Power of counterpoise design;
fastness nozzles,gage of slot design;
Such as suitable for Formation Grade of four classes;
Such as clay,marl,sand,shale and salt。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
77/8×4 403 38 6F 26 12 250P/川8-4 15-45 60-130 12-24
81/4×41/8 403 38 6F 29 12 250P/川8-4 15-45 60-130 12-24
81/2×4 403 38 6F 29 12 250P/川8-4 15-45 60-130 12-24
81/2×41/8 403 38 6F 29 12 250P/川8-4 15-45 60-130 12-24








 Bits Type/IADC code:IC8838 / M841






































Rotundity crown profile,gage of slot design;
Such as suitable for Formation Grade of six and upwards classes;
Such as Ultra hard and abrasive formations;
Such as Silstone,Sandstone,Quartzite,Volcanic。


DESING PARAMETERS OPERATING PARAMETERS
Size
(in) Total length(mm) Gage
Length(mm) Nozzle Net weight(kg) Number of blades API
Shank(in) WOB(kn) RPM Flow rate(l/s)
77/8×4 380 38 0 24 18 250P 15-55 50-130 12-24
81/2×4 380 38 0 27 18 250P 15-60 50-130 12-24
81/2×41/8 380 38 0 27 18 250P 15-60 50-130 12-24








 
T.F.A values of Nozzles Sizes (mm2)


NozzleSize
1/32″(mm) Number of Nozzles
1 2 3 4 5 6 7 8 9 10
6#(4.76) 17.8 35.61 53.41 71.26 89.02 106.83 124.63 142.44 160.24 178.05
7#(5.56) 24.25 48.49 72.74 96.99 121.23 145.48 169.73 193.97 218.22 242.46
8#(6.35) 31.67 63.34 95.01 126.68 158.35 190.02 221.68 253.35 285.02 316.69
9#(7.14) 40.08 80.16 120.24 160.32 200.40 240.48 280.56 320.64 360.72 400.80
10#(7.94) 49.48 98.96 148.44 197.92 247.40 296.88 346.36 395.84 445.32 494.80
11#(8.73) 59.87 119.74 179.61 239.48 299.35 359.22 419.09 478.96 538.83 598.70
12#(9.53) 71.26 142.52 213.78 285.04 356.30 427.56 498.82 570.08 641.34 712.60
13#(10.32) 83.63 167.26 250.89 334.52 418.15 501.78 585.41 669.04 752.67 836.30
14#(11.11) 96.99 193.98 290.97 387.96 484.95 581.94 678.93 775.92 872.91 969.90
15#(11.91) 111.34 222.68 334.02 445.36 556.70 668.04 779.38 890.72 1000.1 1113.4
16#(12.70) 126.68 253.36 380.04 506.72 633.40 760.08 886.76 1013.4 1140.1 1266.8
17#(13.49) 143.01 286.02 429.03 572.04 715.05 858.06 1001.1 1144.1 1287.1 1430.1
18#(14.29) 160.33 320.66 480.99 641.32 801.65 961.98 1122.3 1282.6 1443.0 1603.3
19#(15.08) 178.63 357.26 535.89 714.52 893.15 1071.8 1250.4 1429.0 1607.7 1786.3
20#(15.88) 197.93 395.86 593.79 791.72 989.65 1187.6 1385.5 1583.4 1781.4 1979.3
21#(16.69) 218.22 436.44 654.66 872.88 1091.1 1309.3 1527.5 1745.8 1964.0 2182.2.
22#(17.46) 239.5 479.00 718.50 958.00 1197.5 1437.0 1676.5 1916.0 2155.5 2395.0














 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Brief  Introduction
 KW is professionally engaged in diamond bit research & development, design, manufacturing, sales and technical services. It possesses not only advanced diamond bit design & manufacturing techniques but also advanced manufacturing equipment. It has high-technology talents coming back from abroad and high-qualified skilled technicians engaged in diamond bit manufacturing for more than 20 years.
We can make various kinds of diamond drill bits and core bits form 4″ to 171/2″, and can research, develop, design and manufacture special purpose diamond bits according to customer’s requirements.
It has established perfect product quality systems, and has been certified under ISO9001:2000 Quality System. We design diamond bit by using self-developed advanced Computer Aided Design (CAD), PRO-E 3 D design, and computer full size drill bit resultant force & single cutter force and work analysis computing technologies. The diamond bits made by us are completely in compliance with API and SY/T5217-2000 Standards.
It always carries forward its concepts of  “Good Faith, Customer Orientation, High Quality, Perfection & Innovation, and Contributions & Honors”. We aim to provide our customers with high quality products and excellent services, with highest performance-price ratio products on purpose. It will grow and develop with its customers.
 
 
 
 
Diamond Bit Nomenclature Guide
 
Diamond Core Bit:Number of Blades、Formation Grade、Cutter Size、Crown Profile、Character
 
81/2  F   4   4    5   6   HY
 
                                 Character:A:Auto-Antiwhirt   H:Mixed cutter
B:Bi-Center           M:Milling/Grind
R:Reaming cutter       D:Aid cutter
Y:decompression cutter  S:Side/Directional  
T:tine & round cutter    P:Character design
 U:importation cutter    E:Part of importation cutter
                               -H:horizontal well
Crown Profile 1~7 parabola(long—short)
8— round  9— taper  0— abnormity
 
cutters size:Ø16  PDC cutters
PDC Cutters   TSP Cutters   Nature Diamond(/ct)
Ø8 —2       3—3         10~12—9
Ø10 —3      4—4             8—8
、                                 Ø13—4       5—5             5—5  
Ø16—5       6—6             4—4
Ø19—6       8—8             2—2
Ø25—8       10—9            1—1
>Ø25—9       
Formation Grade:4 class (1~9 class))
                                     
                            Number of Blades:4  (3~9  0—10  1—11  2—12 )
                                     
                         Type:PDC Type     TSP Type    Nature Diamond Type
                              F—Flurry    S—TSP cutter    D—Nature Diamond
                              G—Gale
                              W—Whirlwind
                              T—Typhoon
                              Bits size(inch):OD
 
 
 
 
 
 
Diamond Core Bit Nomenclature Guide
 
Diamond Core Bit:Number of Blades、Formation Grade、Cutter Size、Crown Profile
 
 
8 1/2×4    PC   2   4   4    9  
 
                              
 
Crown Profile 1~7 parabola(long—short)
8— round  9— taper  0— abnormity
 
cutters size:Ø13  PDC cutters
PDC Cutters   TSP Cutters   Nature Diamond(/ct)
Ø8 —2        3—3         10~12—9
Ø10 —3       4—4             8—8
、                                 Ø13—4        5—5             5—5
Ø16—5        6—6             4—4
Ø19—6        8—8             2—2
Ø25—8       10—9             1—1
>Ø25—9       
 
Formation Grade:4 class (1~9 class)
                                     
                           Number of Blades:4  (3~9  0—10  1—11  2—12 )
                                     
                  Type:PDC Type  TSP Type  Nature Diamond Type  Impregnated Type   
PC        SC         DC               IC
                                                                 
Bits Size(inch):OD×ID
                                     
 
 
 
 
 
 
 
                                                   
Bits Selection Guide
 
Formation Rock Type Formation Grade Bits Type
Ultra soft formations with low compressive strength and sticky layers Humous  Gumbo Clay  Marl
 
1~2 ×4××
Soft formations with low compressive strength and high drill ability Marl   Salt Anhydrite  Shale 2~3 ×4××
Soft to medium formations with low compressive strength Sand  Shale  Chalk 2~4 ×4××
Soft-medium to hard formations with high compressive strength and low abrasiveness Shale  Mudstone  Limestone  Sandstone 3~5 ×5××
Hard and dense formations with high compressive strength but not abrasive Shale  Limestone Anhydrite 4~6 ×5××
×6××
Hard dense and abrasive formations with ultra high compressive strength Siltstone  Sandstone  Mudstone 6~8 ×6××
×8××
Ultra hard and abrasive formations Quartzite  Volcanic 8≥ ×8××
 
 
 
 
 
 
 
 
                                                    
                                                    
Bits Type/IADC code:F4446 / M432
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø13 cutters,Power of counterpoise design;
reparable nozzles & immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes hard;
Such as clay,marl,sand,shale and salt。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
3 7/8 325 38 4F 16 4 23/8REG 5-25 90-360 8-20
41/2 340 38 4F 20 4 27/8REG 5-30 90-360 8-20
57/16 340 38 2R+2F 23 4 31/2REG 5-35 90-360 10-24
57/8 360 38 2R+2F 28 4 31/2REG 10-35 90-360 12-28
6 380 38 4R 29 4 31/2REG 10-40 90-280 15-30
61/2 380 38 4R 29 4 31/2REG 10-40 90-280 15-30
 
 
 
 Bits Type/IADC code:F4455D / M422
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
Adopt aid cutters design;
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes hard;
Such as clay,marl,sand,shale and salt。
 
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 425 55 4R 50 4 41/2REG 15-85 90-360 28-40
81/2 425 55 4R 54 4 41/2REG 20-90 90-360 32-44
9 480 65 4R 66 4 41/2REG 20-105 90-360 34-46
91/2 480 65 5R 72 4 65/8REG 22-110 90-280 38-50
 
 
 
 
Bits Type/IADC code:F4455HB / M422
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
reparable nozzles or immobility nozzles,gage of smooth design;
Adopt aid cutters design;
hrough-hole diameterØ210,Expand the hole diameter Ø220,broaching bit;
Such as suitable for Formation Grade of four classes hard;
Such as clay,marl,sand,shale and salt。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
83/4 445 55 4R 60 4 41/2REG 20-90 90-360 32-44
 
 
 
 
 
 
Bits Type/IADC code:F4456 HY/ M422
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø16 & Ø19 cutters,Power of counterpoise design;
Mixed cutter & decompression cutters design;
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes hard ;
Such as clay,marl,sand,shale and salt。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 425 55 4R 52 4 41/2REG 15-85 90-360 28-40
81/2 425 55 4R 56 4 41/2REG 20-90 90-360 32-44
9 460 65 4R 66 4 41/2REG 20-105 90-360 34-46
91/2 460 65 5R 72 4 65/8REG 22-110 90-280 38-50
 
 
 
 
Bits Type/IADC code:F4465Y /IADC M432
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø19 cutters,Power of counterpoise design;
decompression cutters design;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes hard;
Such as clay,marl,sand,shale and salt。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 425 55 4R 52 4 41/2REG 15-85 90-360 28-40
81/2 425 55 4R 56 4 41/2REG 20-90 90-360 32-44
9 460 65 4R 66 4 41/2REG 20-105 90-360 34-46
91/2 460 65 5R 72 4 65/8REG 22-110 90-280 38-50
 
 
 
 
Bits Type/IADC code:F4466D / M422
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø19 cutters,Power of counterpoise design;
Adopt aid cutters design;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes hard ;
Such as clay,marl,sand,shale and salt。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 425 55 4R 50 4 41/2REG 15-85 90-360 28-40
81/2 425 55 4R 56 4 41/2REG 20-90 90-360 32-44
9 460 65 4R 64 4 41/2REG 20-105 90-360 34-46
91/2 460 65 5R 70 4 65/8REG 22-110 90-280 38-50
 
 
 
 
 
 Bits Type/IADC code:F5556 / M522
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes hard;
Such as Shale,Limestone,Sand,Anhydrite。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 435 55 5R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 5R 59 5 41/2REG 20-100 90-240 32-44
91/2 460 65 5R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 7R 140 5 65/8REG 25-145 70-180 46-80
 
 
 
 
 
 Bits Type/IADC code:F5556D / M522
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
Adopt aid cutters design
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes hard;
Such as Shale,Limestone,Sand,Anhydrite。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 435 55 5R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 5R 59 5 41/2REG 20-100 90-240 32-44
91/2 460 65 5R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 7R 140 5 65/8REG 25-145 70-180 46-80
 
 
 
 
 Bits Type/IADC code:F5558DR / M522
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Rond Crown Profile,Ø16 cutters,Power of counterpoise design;
Adopt aid cutters design
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes hard;
Such as Shale,Limestone,Sand,Anhydrite。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 435 55 6R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 6R 59 5 41/2REG 20-100 90-240 32-44
91/2 460 65 7R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 9R 140 5 65/8REG 25-145 70-180 46-80
 
 
 
  
 
Bits Type/IADC code:F5558DR-H / M522
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Rond Crown Profile,Ø16 cutters,Power of counterpoise design;
Adopt aid cutters design
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes hard;
Such as Shale,Limestone,Sand,Anhydrite。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 435 55 7R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 7R 59 5 41/2REG 20-100 90-240 32-44
91/2 460 65 7R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 9R 140 5 65/8REG 25-145 70-180 46-80
 
 
 
 
Bits Type/IADC code:F5566 / M522
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø19 cutters,Power of counterpoise design;
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes hard;
Such as Shale,Limestone,Sand,Anhydrite。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 435 55 5R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 5R 59 5 41/2REG 20-100 90-240 32-44
91/2 460 65 5R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 7R 140 5 65/8REG 25-145 70-180 46-80
 
 
 
 
 Bits Type/IADC code:F5566D / M522
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø19 cutters,Power of counterpoise design;
Adopt aid cutters design;
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes hard;
Such as Shale,Limestone,Sand,Anhydrite。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 435 55 5R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 5R 59 5 41/2REG 20-100 90-240 32-44
91/2 460 65 5R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 7R 140 5 65/8REG 25-145 70-180 46-80
 
 
 
 
 Bits Type/IADC code:F5556 HY/ M522
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø16 and Ø19 cutters,Power of counterpoise design;
Mixed cutter & decompression cutters design;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand, Anhydrite。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 435 55 5R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 5R 59 5 41/2REG 20-100 90-240 32-44
91/2 490 65 5R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 7R 106 5 65/8REG 25-145 70-180 46-80
 
 
 
 
 
 Bits Type/IADC code:F6556/ M522
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
reparable nozzles & tine nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand, Anhydrite。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 435 55 3R+3F 53 6 41/2REG 15-90 90-240 28-40
81/2 435 55 3R+3F 59 6 41/2REG 20-100 90-240 32-44
91/2 490 65 7R 73 6 65/8REG 22-115 90-210 38-50
121/4 530 75 9R 106 6 65/8REG 25-145 70-180 46-80
 
 
 
 
 
 Bits Type/IADC code:F6556DR/ M522
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
Adopt aid cutters design;
reparable nozzles & tine nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand, Anhydrite。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 435 55 3R+3F 53 6 41/2REG 15-90 90-240 28-40
81/2 435 55 3R+3F 59 6 41/2REG 20-100 90-240 32-44
91/2 490 65 7R 73 6 65/8REG 22-115 90-210 38-50
121/4 530 75 9R 106 6 65/8REG 25-145 70-180 46-80
 
 
 
 
 Bits Type/IADC code:F6556T/ M522
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø16 round cutters & tine cutters,Power of counterpoise design;
Round cutters & tine cutters mixed design;
reparable nozzles & immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand, Anhydrite。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 435 55 3R+3F 53 6 41/2REG 15-90 90-240 28-40
81/2 435 55 3R+3F 59 6 41/2REG 20-100 90-240 32-44
91/2 490 65 7R 73 6 65/8REG 22-115 90-210 38-50
121/4 530 75 9R 106 6 65/8REG 25-145 70-180 46-80
 
 
 
 
 
 Bits Type/IADC code:G4456 HY/ M422
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø16 & Ø19 cutters,Power of counterpoise design;
Mixed cutter and decompression cutters design;
helix blade,helix cutters;
reparable nozzles or immobility nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes;
Such as clay,marl,sand,shale and salt。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 425 55 4R 50 4 41/2REG 15-85 90-360 28-40
81/2 425 55 4R 56 4 41/2REG 20-90 90-360 32-44
9 480 65 4R 64 4 41/2REG 20-105 90-360 34-46
91/2 460 65 4R+1F 70 4 65/8REG 22-110 90-280 38-50
 
 
 
 
 Bits Type/IADC code:G4455D / M422
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
Adopt aid cutters design;
helix blade,helix cutters;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes;
Such as clay,marl,sand,shale and salt。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 425 55 4R 52 4 41/2REG 15-85 90-360 28-40
81/2 425 55 4R 56 4 41/2REG 20-90 90-360 32-44
9 460 65 4R 66 4 41/2REG 20-105 90-360 34-46
91/2 460 65 5R 72 4 65/8REG 22-110 90-280 38-50
 
 
 
 
 Bits Type/IADC code:G5556 / M522
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short parabola Crown Profile,Ø16 cutters,Power of counterpoise design;
decompression cutters design;
helix blade,helix cutters;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand, Anhydrite。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 435 55 5R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 5R 59 5 41/2REG 20-100 90-240 32-44
91/2 490 65 5R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 7R 106 5 65/8REG 25-145 70-180 46-80
 
 
 
 
 Bits Type/IADC code:G5566 / M522
 

 
 
 

 
 
 
 
 
Short parabola Crown Profile,Ø19 cutters,Power of counterpoise design;
helix blade,helix cutters;
reparable nozzles ,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand,Anhydrite。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 435 55 5R 53 5 41/2REG 15-90 90-240 28-40
81/2 435 55 5R 59 5 41/2REG 20-100 90-240 32-44
91/2 490 65 5R 73 5 65/8REG 22-115 90-210 38-50
121/4 530 75 7R 106 5 65/8REG 25-145 70-180 46-80
 
 
 Bits Type/IADC code:G5568S / M521
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Rond Crown profile,Ø19 cutters,Power of counterpoise design;
helix blade,helix cutters;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand,Anhydrite。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 405 55 5R 47 5 41/2REG 15-85 90-360 28-40
81/2 405 55 5R 53 5 41/2REG 20-90 90-360 32-44
91/2 460 65 5R 67 5 65/8REG 22-110 90-280 38-50
121/4 500 75 7R 91 5 65/8REG 25-125 70-240 46-80
 
 
 
 
 Bits Type/IADC code:G4468SR / M421
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Rond Crown profile,Ø19 cutters,Power of counterpoise design;
helix blade,helix cutters;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of four classes;
Such as Shale,Limestone,Sand,Anhydrite。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 395 40 4R 47 4 41/2REG 15-85 90-360 28-40
81/2 395 40 4R 53 4 41/2REG 20-90 90-360 32-44
91/2 440 40 4R 67 4 65/8REG 22-110 90-280 38-50
105/8 480 40 6R 91 4 65/8REG 25-125 70-240 46-80
 
 
 
 
 Bits Type/IADC code:G5568SR / M521
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Rond Crown profile,Ø19 cutters,Power of counterpoise design;
helix blade,helix cutters;
reparable nozzles,gage of smooth design;
Such as suitable for Formation Grade of five classes;
Such as Shale,Limestone,Sand,Anhydrite。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
8 395 40 5R 47 5 41/2REG 15-85 90-360 28-40
81/2 395 40 5R 53 5 41/2REG 20-90 90-360 32-44
91/2 440 40 5R 67 5 65/8REG 22-110 90-280 38-50
105/8 480 40 7R 91 5 65/8REG 25-125 70-240 46-80
 
 
 
 
  Bits Type/IADC code:PC2449 / M431
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cone crown profile of short,Ø13 cutters,Power of counterpoise design;
fastness nozzles,gage of slot design;
Such as suitable for Formation Grade of four classes;
Such as clay,marl,sand,shale and salt。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
77/8×4 403 38 6F 26 12 250P/川8-4 15-45 60-130 12-24
81/4×41/8 403 38 6F 29 12 250P/川8-4 15-45 60-130 12-24
81/2×4 403 38 6F 29 12 250P/川8-4 15-45 60-130 12-24
81/2×41/8 403 38 6F 29 12 250P/川8-4 15-45 60-130 12-24
 
 
 
 
 Bits Type/IADC code:IC8838 / M841
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Rotundity crown profile,gage of slot design;
Such as suitable for Formation Grade of six and upwards classes;
Such as Ultra hard and abrasive formations;
Such as Silstone,Sandstone,Quartzite,Volcanic。
 
DESING PARAMETERS OPERATING PARAMETERS
Size
(in)
Total length(mm) Gage
Length(mm)
Nozzle Net weight(kg) Number of blades API
Shank(in)
WOB(kn) RPM Flow rate(l/s)
77/8×4 380 38 0 24 18 250P 15-55 50-130 12-24
81/2×4 380 38 0 27 18 250P 15-60 50-130 12-24
81/2×41/8 380 38 0 27 18 250P 15-60 50-130 12-24
 
 
 
 
 
T.F.A values of Nozzles Sizes (mm2
 
NozzleSize
1/32″(mm)
Number of Nozzles
1 2 3 4 5 6 7 8 9 10
6#(4.76) 17.8 35.61 53.41 71.26 89.02 106.83 124.63 142.44 160.24 178.05
7#(5.56) 24.25 48.49 72.74 96.99 121.23 145.48 169.73 193.97 218.22 242.46
8#(6.35) 31.67 63.34 95.01 126.68 158.35 190.02 221.68 253.35 285.02 316.69
9#(7.14) 40.08 80.16 120.24 160.32 200.40 240.48 280.56 320.64 360.72 400.80
10#(7.94) 49.48 98.96 148.44 197.92 247.40 296.88 346.36 395.84 445.32 494.80
11#(8.73) 59.87 119.74 179.61 239.48 299.35 359.22 419.09 478.96 538.83 598.70
12#(9.53) 71.26 142.52 213.78 285.04 356.30 427.56 498.82 570.08 641.34 712.60
13#(10.32) 83.63 167.26 250.89 334.52 418.15 501.78 585.41 669.04 752.67 836.30
14#(11.11) 96.99 193.98 290.97 387.96 484.95 581.94 678.93 775.92 872.91 969.90
15#(11.91) 111.34 222.68 334.02 445.36 556.70 668.04 779.38 890.72 1000.1 1113.4
16#(12.70) 126.68 253.36 380.04 506.72 633.40 760.08 886.76 1013.4 1140.1 1266.8
17#(13.49) 143.01 286.02 429.03 572.04 715.05 858.06 1001.1 1144.1 1287.1 1430.1
18#(14.29) 160.33 320.66 480.99 641.32 801.65 961.98 1122.3 1282.6 1443.0 1603.3
19#(15.08) 178.63 357.26 535.89 714.52 893.15 1071.8 1250.4 1429.0 1607.7 1786.3
20#(15.88) 197.93 395.86 593.79 791.72 989.65 1187.6 1385.5 1583.4 1781.4 1979.3
21#(16.69) 218.22 436.44 654.66 872.88 1091.1 1309.3 1527.5 1745.8 1964.0 2182.2.
22#(17.46) 239.5 479.00 718.50 958.00 1197.5 1437.0 1676.5 1916.0 2155.5 2395.0
 
 
 
 3 7/8in 3 7/8″KW413TV(99mm),
4 3/4in 4 3/4″KW316(120.65mm),
6in 6″KW516D(152.4mm), 6″KW313DS(152.4mm), 6″KW413DS(152.4mm),6″KW513R(152.4mm),
7 7/8in 7 7/8″KW519D(200.05mm),
8 1/8in 8 1/8″KW519D(206.4mm),
8 3/8in 8 3/8″KW616DR(212.7mm),
8 1/2in 8 1/2″KW616DR(215.9mm), 8 1/2″KW516DR(215.9mm), 
8 1/2″KW516DRV(215.9mm), 8 1/2″KW516DR(215.9mm), 
8 1/2″KW616VR(215.9mm), 8 1/2″KW319SG(215.9mm), 
8 1/2″KW519SGR(215.9mm), 8 1/2″KW519D(215.9mm), 
8 1/2″KW519GS(215.9mm), 8 1/2″KW516D(215.9mm),
8 3/4in 8 3/4″KW516GS(222.25mm), 8 3/4″KW516GSR(222.25mm), 
8 3/4″KW516D(222.25mm), 8 3/4″KW516DT(222.25mm), 
8 3/4″KW516DT(222.25mm), 8 3/4″KW616DR(222.25mm), 
8 3/4″KW519VR(222.25mm), 8 3/4″KW519R(222.25mm), 
8 3/4″KW519DR(222.25mm), 8 3/4″KW519GS(222.25mm),
9in 9″KW419D(228.6mm), 9″KW519GSV(228.6mm),
9 1/2in 9 1/2″KW516VS(241.3mm), 9 1/2″KW416DR(241.3mm), 9 1/2″KW516DGS(241.3mm),
9 7/8in 9 7/8″KW519GSV(250.8mm),
12 1/4in 12 1/4″KW516GS(311.15mm), 12 1/4″KW516GSDV(311.15mm), 
12 1/4″KW616GSDR(311.15mm), 12 1/4″KW519GSV(311.15mm),
13 5/8in 13 5/8″KW519GSR(346.1mm),
14 3/4in 14 3/4″KW519GSV(374.65mm),
17 1/2in 17 1/2″KW519VR(444.5mm), 17 1/2″KW616GSV(444.5mm),
 
 
 
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