Corrugated Pipes, Waterstops, Expansion Joints manufacturer / supplier in China, offering Bridge Expansion Joint Gqf-C Type E Type F Type 160 Type Comb Plate Highway Expansion Joint, Roadbed Steel Corrugated Pipe Corrugated Culvert Highway Culvert Assembled Pipe, Large Diameter Metal Pipe Assembly Galvanized Corrugated Pipe Highway Roadbed Corrugated Pipe Culvert and so on.