... '')× 1.2mm-39mm Standard GB, ASTM, API 5L, API 5CT,DIN, JIS and so on Out ... 1998 DIN 1629-1984seamless steel tbesand pipesfor casingAPI SPEC 5CTJ55, N80APISeamless steel tubes foroil casing andtubing ... in oil wellsAPE SPEC 5LA, B, X42APISeamles Steel Tubesand Pipes forHigh ... 1Cr2Mo, 1Cr5Mo, JIS G3441-1988 1.Specification: API 5L GR.B SSAW steel pipe line pipe ,2 ...