Wellhead Tools, Cementing Tools, Downhole Tools manufacturer / supplier in China, offering API 5′′ Flex Non-Mag Drill Collar/Non-Mag Compressive Service Drill Pipe, Hydraulic Make-up and Break-out Torque Machine/Unit for Pdm/Jar, Quick-Release Pneumatic Air Operated Casing Thread Protector for Oil Well Drilling and so on.