How should the spiral steel pipe in the water supply pipe in common industrial projects be anti-corrosive

Usually, we use epoxy coal tar paint. If the requirements are high, we can use 3 oils and 2 cloths. 3 layers of paint and 2 layers of fiberglass cloth, staggered construction. If the requirements are general, just use epoxy coal tar primer and topcoat directly, and apply twice each. Simple and convenient, this is usually the solution.

The inside of the steel pipe depends on whether it is drinking water. If it is, environmentally friendly paint such as epoxy polyamide paint should be used.

PE anti-corrosion steel pipe parent materials include seamless steel pipes, spiral steel pipes, and straight seam steel pipes. The three-layer polyethylene (3PE) anti-corrosion coating is widely used in the oil pipeline industry for its good corrosion resistance, water vapor permeability resistance, and mechanical properties. 3PE Anti-corrosion Steel Pipe 3PE Anti-corrosion Steel Pipe Three-layer Structure Polyethylene Anti-corrosion Layer (3PE) combines the excellent properties of fused epoxy powder coating and extruded polyethylene anti-corrosion layer, and combines the interface characteristics and chemical resistance of fused epoxy powder coating with the mechanical protection characteristics of extruded polyethylene anti-corrosion layer, thereby significantly improving their respective performances. Therefore, it is very superior to the outer protective layer of buried pipelines.