How Pipes Are Checked in the Factory — Pipe Inspection Process

3PE anti-corrosion steel pipes adopt a three-layer composite protective structure consisting of epoxy powder, adhesive copolymer and polyethylene. They feature excellent adhesion to steel substrates and superior resistance against moisture, acid, alkali, saline soil and microbial corrosion, alongside outstanding electrical insulation properties. The outer polyethylene layer delivers strong impact resistance, wear resistance and scratch resistance, enabling stable operation within a wide temperat