Seamless steel pipeAPI5L 5CT, ISO9001, ISO4001 certification Service Integrity explain all ... , the Middle East, South America, Southeast Asia, the United States seamless 140-273, spiral 219-2220, Longitudinal 219-406. Petroleum Casing ... -273mmwall thicknesssch5s,sch10,sch20,sch30,sch40s,STD,sch60,sch80s,XS,sch80,sch100,sch140,sch160,XXSstandardBS,GB, ANSI , JIS, DIN ,ASME ,etcPackagingContainer ...