Q:What is the standard thickness of the anti-corrosion coating for anti-corrosion steel pipes?

The national standard thickness for 3PE reinforced anti-corrosion grade is 2.5–3.7 mm. Generally, 3PE anti-corrosion steel pipes of the same specifications are 0.7 mm thicker than the ordinary grade.

Time：23/12/2025 03:34:50

The 3PE anti-corrosion coating consists of an epoxy powder layer, an adhesive layer, and a polyethylene layer. The epoxy powder layer provides adhesion and chemical resistance. The thickness of the epoxy powder layer varies depending on the pipe diameter and grade requirements: no less than 120 μm for DN≤500 mm and no less than 150 μm for DN>500 mm; the total thickness can reach 2.7–2.9 mm in reinforced anti-corrosion applications.

Time：22/12/2025 17:32:09