Spiral Steel Pipe with Inner IPN8710 Coating & Outer 3-coat 2-fabric Bitumen Anti-corrosion Lining

Inner wall coated with food-grade IPN8710 epoxy anticorrosive paint (certified for potable water conveyance). Outer wall adopts classic 3-asphalt-coat + 2-fiberglass-fabric anti-corrosion structure for underground burial, excellent resistance against soil corrosion and underground water erosion. Widely used in municipal water supply, drainage and high-standard farmland water diversion projects, available in large diameter up to DN2600.