... .2mm-39mm 3.Grade 10#,20#,45#,16Mn,27SiMn,12Cr1MoV,Q235,ST42 Carbon seamless steel pipe ProductionCarbon seamless steel pipeBrandXin hai ... fengSpecification10.29mm-1016mm 1/8’’-40’’× 1.2mm-39mmStandardGB, ASTM, API 5L, API 5CT,DIN, JIS and so onOut Diameter10 ... ’’-40’’Wall Thickness1.2mm-39mmGrade10#,20#,45#,16Mn,27SiMn,12Cr1MoV,Q235,ST42,ST52,A106-a,A106b, and so onLength6-12m. As ...