... 5 Tones FOB Price:US $750-1300 / Ton Steel structure roof/building/project/engineer Safe and Easy to ... , labours and materials; what's more, practical, stable and safe in constructions.1. Certificate: ISO 14001:2004 ... Pipe truss can be widely used for steel structures, workshops, warehouses, steel plants, gymnasiums, hypermarkets, leisure buildings, ... -82911099 MOB: 86-135 1682 6523 Steel Frame Joint