... -508mm (1/8''-20'')× 1.2mm-39mm Standard GB, ASTM, API 5L, API 5CT,DIN, JIS and so on Out Diameter 10.29mm ... Seamless, welded Usage 1. Low and middle pressure fluid transportation pipeline 2. Casing Tube 3. Boiler Pipe 4. Petroleunm and natural ... , 20, 12CrMo, 15CrMo, 1Cr2Mo, 1Cr5Mo, JIS G3441-1988 1.Specification: API 5L GR.B SSAW steel pipe line pipe ,2.Size: from ...