The outer‑galvanized and inner‑coated plastic steel pipe adopts straight‑seam steel pipe or seamless steel pipe as base pipe. It is composited of steel pipe and plastic by heating‑spraying process, forming a composite pipe with galvanized outer surface and plastic‑coated inner wall. It delivers good corrosion resistance and weather resistance.

The outer‑galvanized & inner‑coated plastic steel pipe generally adopts hot‑dip galvanized surface for steel pipe. Hot‑dip galvanizing features impact resistance, anti‑corrosion and excellent anticorrosive performance. Cold galvanizing is not recommended. Its inner coating is made of food‑grade epoxy or polyethylene material, so it can be safely applied in domestic water supply and drainage systems. It is also suitable for buried pipelines with superior underground service performance.

Thanks to its safety & hygiene, high rigidity and strong coating adhesion, this pipe is widely used in domestic water supply & drainage, fire‑protection, coal mining, chemical industry and other fields.