Mud Pump, Top Drive, Power Tongs manufacturer / supplier in China, offering API 5CT OCTG Drilling Oil Gas Wells Pipe Casing Tubing Coupling for Tubing and Casing Tubes Connection Assembly, Oilfield API 5CT Tubing and Casing Coupling with Different Steel Grade Casing Pipe Couplings for Btc Ltc Stc Thread, Hydraulic System Packing 30123290-Pk - Optimal Sealing Effect and so on.