erw api 5l steel pipe Manufacture OD:48.3---610mm Thickness:2.---14mm Standard:EN1,API ,ASTM. Material:GRB , ... 33mm - 914.4mm(1”~36”) with thickness of 3~30mmStandardGB/T8162,GB/T8163 and DIN/JIS/ASTM standarda. ... DIN Standard 10#(ST37-2,ST35-8),20#(ST42,ST45-4/8),45#(DIN CK45),16mn(ST52.4) etc.b. JIS ... :OD +/-1%,Thickness +12.5% / -10%,length +/-2 cmIf you have any questions, please do not hesitate to ...