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Oval Shape Corrugated Metal Pipe with Second Anti-Corrosion Asphalt (bitumen) Coated or Epoxy Resin Coated, Find Details and Price about Corrugated Steel Culvert Pipe Hot-Dip Galvanized Steel Corrugated Culvert Pipe from Oval Shape Corrugated Metal Pipe with Second Anti-Corrosion Asphalt (bitumen) Coated or Epoxy Resin Coated - Hengshui Aohong Engineering Materials Co., Ltd