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 7K Ht400 Ceramic Liner API Ceramic Liners for Mud Pump, Fh35-35 5000 Psi Hydril Annular Bop Packing Element and so on.