... 18"SCH20,30,40,60,STD XSAPI5LGR.B/X42,X52,X605.8m,6m,5m to 12m randomERW Steel pipe8" to 28"SCH20,30,40 ... ,70% balance. Production Carbon seamless steel pipe Specification 10.29mm-508mm (1/8''-20'')× 1.2mm-39mm Standard GB, ASTM, API 5L, API 5CT,DIN, JIS ... , 12CrMo, 15CrMo, 1Cr2Mo, 1Cr5Mo, JIS G3441-1988 1.Specification: API 5L GR.B SSAW steel pipe ,2.Size: from 219" to 2420", 3.Wall Thickness: from ...