12 1/4 IADC637 tci tricone bit

Basical Parameter

Bit Size

12 1/4"(311.2MM)

IADC Code

637G

Connection

6 5/8"API reg pin

Nozzle Qty

3NZ

Make up Torque(KN.m)

38~43.4

Operating Parameter

Rotary Speed(rpm)

80~40

Weight on Bit(KN/MM)

0.5~1.2

Formation

Hard formation with high compressive strength ,such as limestone,sandstone,dolomite,hard gypsum,marble,etc.