... payment,70% balance. Production Carbon seamless steel pipe Specification 10.29mm-508mm (1/8''-20'')× 1.2mm-39mm Standard GB, ASTM, API ... and so on Out Diameter 10.29mm-508mm. (1/8''-20'') Wall Thickness 1.2mm-39mm Grade 10#,20#,45#,16Mn,27SiMn,12Cr1MoV ... Length 6-12m. As customers requestments. Model Number 10.29mm-508mm. (1/8''-20'')1.2mm-39mm Technique Seamless, welded Usage 1 ...