welded steel tube: 1) ISO 9001:2008,PED 2)OD:10-219.08mm WT:5S-40S 3)Export widely to USA, ... : SCH5S-SCH40SOuter Diameter: 1/2"-8"Polished Or Not:BothSection Shape: RoundCertificate: ISO9001 2008Secondary Or Not: Non-secondaryAlloy Or Not: Non ... 1/2",3",3 1/2",4",5",6",8",10",12",14",16",18"5.W.T:SCH5S,SCH10S,SCH40S ... -≤1.0 -≤0.25304≤0.0717.00-19.008.00-10.00≤2.00≤0.035≤0.030 -≤1.0 - -316 ...