... payment,70% balance. Production Carbon seamless steel pipe Specification 10.29mm-508mm (1/8''-20'')× 1.2mm-39mm ... 5L, API 5CT,DIN, JIS and so on Out Diameter 10.29mm-508mm. (1/8''-20'') Wall Thickness 1.2mm ... -39mm Grade 10#,20#,45#,16Mn,27SiMn,12Cr1MoV,Q235, ST42,ST52,A106 ... on Length 6-12m. As customers requestments. Model Number 10.29mm-508mm. (1/8''-20'')1.2mm-39mm ...