Oilfield Equipment, Mud Pump, Mud Pump Parts manufacturer / supplier in China, offering Spiral Drill Collar 6 5/8′′, Nc50, API 7-1, L=9.45, API Dies and Slip Inserts for Elevators, Tongs, Slips and Spiders, API 8c Perfection Links for Oilfield Drilling and Hoisting Sh150 and so on.