... kinds of steel structures, steel bulding, metal building, modular house, steel frame for warehouse,workshop, garage etc, steel beams, ... and beam:Material Q345(S355JR)or Q235(S235JR) steel, all bolts connection! Straight cross-section or ... Crane (if have) ,Crane span, crane lift height, max lift capacity, max wheel pressure and min wheel pressure! large span prefabricated steel construction/light steel ...