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Size:8 1/2”

IADC code:617

Sealed Type: metal sealed

Thread:6 5/8"reg pin

WOB(KN/mm):0.35~1.05

RPM(r/min):80~40

Make up torque(KN.M):16.300~21.700

Weight(kgs/pc):15

Color:Blue, red, green or Customized

Packing:Plywood box(free-fumigation)

Industrial standard:SY/T5164

MOQ:1 PC

Payment terms: T/T,Western Union,and L/C are acceptable

Applications:Medium hard with high compressive strength and thick&hard stringers, such as hard shale, limestone, sandstone and dolomite, etc.

Very soft with low compressive and high drillability, such as shale, clya, sandtone and conglomerate, etc. Soft with low compressive strength and high drillability , such as shale, clay, sandstone, soft limestone, salt bed, and gypsolyte, etc.