... 1, Grade 2, Grade 3, ST33-2, St33, St37, St42, St34-2, St37-2, St42-2, St52-3, P195, P235, P265, S235JRH, S275J0H ... 1/2,etc.EndPlain end, beveled, cut square, grooved, threaded and coupling, etc.SurfaceBare, varnished, black lacquer, Bitumen Coating, zinc ... - for welded, riveted,or bolted construction of bridges and buildings, and for generalstructural purposes- suitable for nominal pressure 25 for ...