Used thread rollers, in China

28 Inches No Dig Metal Face Sealed Bearing Roller Cones Hole Opener for Hard Rock

• Manufacturer: Hebei Solidkey petroleum machinery co;ltd

Hard formations for high compressive strength, such as sandstone, hard shale, dolomite, hard gypsum, chert, granite, etc.

28" HDD Hole Opener IADC637G Metal-face Sealed Bearing For Hard Rock Trenchless

• Manufacturer: Hebei Solidkey petroleum machinery co;ltd

Hard formations for high compressive strength, such as sandstone, hard shale, dolomite, hard gypsum, chert, granite, etc.

42" HDD Hole Opener IADC637G Metal-face Sealed Bearing For Hard Rock Trenchless

• Manufacturer: Hebei Solidkey petroleum machinery co;ltd

Hard formations for high compressive strength, such as sandstone, hard shale, dolomite, hard gypsum, chert, granite, etc.

8 1/2"(215.9mm) TCI Tricone Bit IADC637G for Hard Rock Drilling

Diameter: 8 1/2"(215.9mm) | Bearing type: Elastomer sealed bearing | Tooth type: TCI(Tungsten Carbide Inserts) | Circulation type: Mud fluid | Thread connection: 4 1/2 reg pin | Rpm(r/min): 80-40 | Wob(kn): 108-...

9 7/8"(250.8mm) TCI Tricone Bit IADC637 for Hard Rock Drilling

Diameter: 9 7/8"(250.8mm) | Bearing type: Elastomer sealed bearing | Tooth type: TCI(Tungsten Carbide Inserts) | Circulation type: Mud fluid | Thread connection: 6 5/8 reg pin | Rpm(r/min): 80-40 | Wob(kn): 125-...

11 5/8"(295.3mm) IADC537 Medium Rock Drilling TCI Tricone Bit Popular in Middle-Asian Oil Field

Diameter: 11 5/8"(295.3mm) | Bearing type: Elastomer sealed bearing | Tooth type: TCI(Tungsten Carbide Inserts) | Circulation type: Mud fluid | Thread connection: 6 5/8 reg pin | Rpm(r/min): 120-50 | Wob(kn): 13...

12 1/4"(311.1mm) Conical Inserts TCI Tricone IADC617 Drill Rock Bits

• Manufacturer: Hebei Solidkey petroleum machinery co;ltd

Diameter: 12 1/4"(311.1mm) | Bearing type: Elastomer sealed bearing | Tooth type: TCI(Tungsten Carbide Inserts) | Circulation type: Mud fluid | Thread connection: 6 5/8 reg pin | Rpm(r/min): 90-50 | Wob(kn): 140...