... (pre-engineered) Steel Building,Space Frames, Portable Cabins, Tubular Steel Structures,basic building elements(built-up welded H ... &Engineering Service, Steel Building,Space Frames, Portable Cabins, Tubular Steel Structures,basic building elements(built-up welded H ... industrial plant/workshop/warehouse/factores, airport terminal, highrise building, bridge, commercial center, exhibition hall, stadium ...