... price. 1.Out Diameter: 219.1 mm – 2540mm (8"-100") 2.Wall Thickness: 3.2mm - 25.4mm 3.Length: 6 – ... X46, X56, X60,X65,X70, X80ASTM A252 GR 1, GR 2, GR 3ASTM A53: GR A, GR B, GR C, ... ASTM 53, EN10217, EN10219, GB/T9711.1-1997,GB/T9711.2-1999, BS, JIS, ISO6.Process: Spiral Submerged- Arc Welded ... lindayuan1124Mobile: +86-15226605670 SSAW Round Hollow Section Steel Tube with Fusion Bond Epoxy Coating