Beijing Metalwork Petroleum Technology Co;Ltd
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Stabilizer (string type, bottom hole type)
Hollow Shaft
Piston Rod
Section Steel roll
Work Roll
Shaft
Valve Body
Spline Shaft
Hollow spindle
non-magnetic drill collar
drill pipe
Quarter Drill Pipe
Non-magnetic Heavy Weight Drill Pipe
Integral Heavy Weight Drill Pipe
Six-party Drill Pipe
Spiral Drill Collars
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