Detailed Product Description Specification:GB/T3087, ASTM A210, ASTM A106, EN10216, EN10297, DIN1629Size:Outside Dimension from 20mm-340mm, Wall Thickness from 3mm-26mmGrade: 10, 20, A1, C,A, B, ST37.0, ST44.0, ST52.0, P460, E470Length:5.8 meters for 20' container, 6 meters to 12 meters for 40' container andcustomized length.Packing:In bundles, paint coating, beveled/plain end, end capped. ...