... ...Grade: 10#, 20#, 45#, 15CrMo, 12Cr1MoV, 16Mn, A...Thickness: 2 - 70 mmSection Shape: RoundOuter Diameter: 21.3 - 610 mmPlace of ... seamless pipeProductioncarbon steel seamless pipeBrandNEW SINDASpecification21.3mm—457mm (1/2”-22”)*2mm-70mmStandardGB,ASTM,API5L,API5CT,DIN,JIS and so ... onOut Diameter21.3mm—457mm (1/2”-22”)Wall Thickness2mm-70mmGrade10#,20#,45#,16Mn,27SiMn,Q235,ST42,ST52,, ...