PC Steel Strand, PC Strand, Unbonded PC Strand manufacturer / supplier in China, offering Post Tension Materials Galvanized/Plastic Corrugate Duct Pipe for Building Construction, Galvanized Duct Pipe for Post Tension Prestressed Concrete Anchor, Prestressed Concrete Materials Galvanized Corrugate Duct Pipe 20*70mm/20*50mm and so on.