... all kind of prefab house,chicken house,school house, steel hangar, steel garage, steel shed,steel shelter, steel barn We can supply all ... .column and beam:material Q345(S355JR)or Q235(S235JR) steel, all bolts connection !straight cross-section or Variable cross-section!5 ... , max lift capacity, max wheel pressure and min wheel pressure!All the steel structure building are customized, pls feel free to ...