Material: steel bar,iron rod panels opening: the Horzontal from 50mm ... the tunnels, bridges, highway, airport and wharf, also in construction of wall body.Features: Solid construction,Easy handling, Packing: PVC Shrink, Moister ... steel,etc.It has the characteristics of corrosion-resisting and oxidation-resisting.Using:Widely used in building,oil,chemical industry,breed plant ...