... TUBE EN 10219 Cold formed welded structural hollow sections of non-alloy and fine grain steels ERW STEEL PIPE SIZE:1/ ... nameERW carbon steel pipe (HFW/HFI)Out diameter21.3mm-610mm, 1/2”-24”Wall Thickness1.8mm-22mm, SCH 5S, SCH ... J55, K55, M65, L80, C95, N80,Q125, S235GT, S195T, Grade 1, Grade 2, Grade 3, ST33-2, St33, St37, St42, St34 ... structure purpose and pressure service etc. ERW STEEL TUBE EN 10219