... column/beamBoltanchor,ordinary,high strenght boltRoof &Wallsandwich panel or steel plateSandwich panel materialsEPS, polyurethane, rock wool, glass ... ,Steel Tower,steel villaProduction Lines2 production lines of light steel,space frame and tube truss. 5 production lines of color steel ... . Formation effect chart Formation effect chart light steel truss frame for construction villa&prefabricated