... Stainless Steel Seamless Pipes 2.material:10# 20# 40# 45# etc seamless pipe ProductionCarbon seamless steel pipeBrandzhcxSpecification10.29mm-508mm ... (1/8''-20'')Wall Thickness1.2mm-39mmGrade10#,20#,45#,16Mn,27SiMn,12Cr1MoV,Q235,ST42,ST52,A106-a,A106 ... GradeStandardseamless steel tubesand pipesfor structural purposeGB/T8162-199910, 20, 35, 45, 40Mn2, 45Mn2, 27SiMn, 20Cr, 40Cr, 20CrMo, 35CrMo, 38CrMoA1 ...