ASME SECC VIII DIV 1 (Pressure vessels), ASME B31.3 & B31.1 (Pressure pipes), NBIC Manufacture and repair of pressure vessels, AWS D1.1 (Structural steel, DNV, approved). FCAW, GMAW: GROUPS I.II.II & 6GR for T, Y, K structural connections, ASME “U” & National Board, Stamped R, for pressure vessels, AWS D1.6 steel structures (DNV approved GMAW).