ASTM A36 I BEAM steel due to its good mechanical performance, A36 I Beam is widely used in many constructions, A36 I Beam steel especially used for those large-scaled constructions-workshops, bridges, ships, elevating machinery, equipment foundation, support, foundation pile and so on. ASTM A36 I Carbon Steel Beam It has the characteristics of light weight and good load bearing. Widely used in the automotive industry, aerospace, construction industry and other industries.