Corrugated Pipes, Waterstops, Expansion Joints manufacturer / supplier in China, offering High-Performance Steel Edge Rubber Water Stop Belt for Bridges and Tunnels Water Expansion Waterstop Band, Large Diameter Corrugated Steel Pipe Culvert with Bituminous Coating for Sewer Line Applications, Extra-Thick Gauge Corrugated Steel Pipe Arch Culvert for Railway Underpass Construction and so on.