API casing steel pipe 1.Standard: API 5L , API 5CT API SPEC 5L Gr.A,B,X42,X46,X52,X56,X60,X65,X70,X80 API SPEC 5L API casing steel pipe 1.Standard: API 5L , API 5CTAPI SPEC 5LGr.A,B,X42,X46,X52,X56,X60,X65,X70,X80API SPEC 5L PSL 1:A25\A\B\X42\X46\X52\X56\X60\ X65 \X70PSL 2:B\X42\X46\X52\X56\X60\X65\X70\ X80API SPEC 5CT API 5CT K55/J55/N80/L80/P110 PIPE nameAPI casing steel pipeOD20mm-800mmWall ...