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Roller Cone Bit details

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There are rich and diverse roller bits to meet different requirements of formations and rotary speeds. The sizes of the gage diameter and the types of bit are strictly designed in accordance with the standards API Spec.7, with the certificate of authority to use the official API monogram.
There are not only rubber sealed bearing bits but also metal face sealed bearing bits, and all bits are lubricated by new type of wear resistant grease that can sustain high temperature up to 250°C.
The surfaces of main or key parts are hardfaced and treated with friction reducing technology. They can enhance gage protection and prolong the life of bit.
Center nozzle is equipped for bits of larger sizes.

Specifications of Roller Bit (Tricone Bit)

Size		IADC Code	API Regular Pin (in)
in	mm
3 7/8		126 617
4 1/4	107.9	131 321	2 3/8
4 5/8	117.5	121 241 527	2 7/8
4 3/4	120.6	241
5 5/8	142.9	121 241 321 537	3 1/2
5 7/8	149.2	241 321 517 537 547 617 637
6	152.4	211 216 246 437 517 527 537 547 617 637
6 1/8	155.6	117 211 437 517
6 1/4	158.7	121 241 321 517 527 537 547 637
6 1/2	165.1	517
6 3/4	171.4	121 241 321
7 1/2	190.5	121 124 134 217 244 517 527 547 617	4 1/2
7 7/8	200	121 124 131 134 241 321 517 527 547 617
8 3/8	212.7	215 217 517 527 537 547 617 637
8 1/2	215.9	114 116 117 121 124 126 127 131 134 137 211 216 217 241 247 321 437 447 517 527 537 547 617 637 837
8 3/4	222.2	127 417 437 447 517 537 617
9 1/2	241.3	117 124 125 127 437 517 527 537 617 637	6 5/8
9 5/8	244.5	114 121 124 131 134 437 517 527
9 7/8	250.8	115 121 211 241 321 512 542 612 732
10	254	126
10 5/8	269.9	127 217 417 517 527
11 5/8	295.3	117 127 137 217 417 517 537 547
12	304.8	124 126 216 517 537 547 617
12 1/8	308	547
12 1/4	311.1	114 115 116 117 121 124 126 131 134 137 211 214 244 437 517 527 537 547 617 637
13 5/8	346.1	114 115 121 124 437 515 517
13 3/4	349.2	114 115 437 517
14 3/4	374.6	136 127 517 527	7 5/8
15	381	121 124 241 244
15 1/2	393.7	125 215 217 517 537
16	406.4	115 215 515 535 545
17 1/2	444.5	435 515 437 517 527 537 547
18	457.2	547
18 1/2	469.9	547
19 1/4	489	115 225
20	508	125 215 515 525
22	558.8	124
24	609.6	124
26	660.4	114 124 134 525
36	914.4	124

Drag Bit details

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Type: Chevron and Step type.
Wings: 2, 3 and 4 wings.
Size: 2 7/8" to 24"
Thread: 2 3/8, 3 1/2, 4 1/2, 5 1/2, 6 5/8 API Reg. Pin.
Drag bit are manufactured from forged high quality alloy steel and premium tungsten carbide insert, plus state of art welding technology and multiple precision heat-treatment to provide highest penetration rate and longest lifespan at roughest condition.
Accordance with API SPEC 7 standard, and have the certificate of authority to use the official API monogram.

Drag Bit details

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Type: Chevron and Step type.
Wings: 2, 3 and 4 wings.
Size: 2 7/8" to 24"
Thread: 2 3/8, 3 1/2, 4 1/2, 5 1/2, 6 5/8 API Reg. Pin.
Drag bit are manufactured from forged high quality alloy steel and premium tungsten carbide insert, plus state of art welding technology and multiple precision heat-treatment to provide highest penetration rate and longest lifespan at roughest condition.
Accordance with API SPEC 7 standard, and have the certificate of authority to use the official API monogram.