TPEP coating for pipe protection

TPEP steel pipe, also known as plastic-coated composite steel pipe, is a steel pipe coated with (modified polyethylene) or epoxy resin on the outside and inside using spraying, rolling, and soaking processes.

Currently, it is one of the most commonly used corrosion-resistant steel pipes for long-distance buried pipelines.

The external wall of the steel pipe is formed by a hot-melt winding process, the bottom coating is epoxy resin, the middle layer is adhesive substances, and the outer layer is polyethylene, forming a three-layer anti-corrosion coating.

The wall applies the thermal spraying method, adding epoxy resin powder at high temperatures, which evenly covers the pipe surface, forming a alloy layer known as “TPEP steel pipe” (T, three layers, PE – polyethylene, EP – epoxy resin).

TPEP steel pipe has excellent corrosion resistance; the coating itself has good electrical insulation, no electrical corrosion, low moisture absorption, high mechanical strength, and a low friction coefficient, ensuring long-term use and effectively preventing damage from plant roots and soil environment stress.