ASTM A36 steel is classified as AWS Group I material and, as such, may be welded with non-low-hydrogen processes. In contrast, ASTM A572 Grade 50 steel is classified as AWS Group II material, which, because of its higher yield strength, must be welded using low-hydrogen processes. Because dual-certified steel, by definition, meets the chemistry and strength requirements of ASTM A572 Grade 50 steel, welding should be performed using low-hydrogen processes, unless the suitability of an appropriate weld procedure specification using a non-low-hydrogen process can be demonstrated through qualification testing.