UBING PIPE Application: Tubing Pipe placed within a well and serving to produce well fluids or to inject fluids, after completion of the drilling, transport from the reservoir to the surface of crude oil and natural gas.API 5CT Tubing pipe Mail Steel Tube Grade:J55、K55、N80-1、N80Q、L80-1、L80 3Cr、L80 9Cr、L80 13Cr、R95、C90、C110、T95、Q125、P110

API 5CT Casing pipe Application:Casing Pipe run from the surface and intended to line the wall of a drilled well, that serves as the structural retainer for the walls of oil and gas wells, or well bore, Mail Steel Grade:J55、K55、N80-1、N80Q、L80-1、L80 3Cr、L80 9Cr、L80 13Cr、R95、C90、C110、T95、Q125、P110.

API COUPLING is a internally threaded cylinder for joining two lengths of threaded casing and tubing   pipe.TUBING COUPLING coupling Mail Steel Tube Grade:J55、K55、N80-1、N80Q、L80-1、L80 3Cr、L80 9Cr、L80 13Cr、R95、C90、C110、T95、Q125、P110

API Coupling is a internally threaded cylinder for joining two lengths of threaded casing and tubing   pipe.API 5CT Casing coupling Mail Steel Tube Grade:J55、K55、N80-1、N80Q、L80-1、L80 3Cr、L80 9Cr、L80 13Cr、R95、C90、C110、T95、Q125、P110