3PE anti-corrosion thermal insulation pipes

Product introduction： 1. Buried steel pipeline outer layer adopts 3 layer EP anti-corrosion product structure kinds: extrusion polyethylene anti-corrosion layer includes two-layer and three-layer structures. 　　 2. Three-layer structure: the bottom layer is epoxy resin powder coating, the middle layer is polymer cementing compoun,d and the outer layer is polyethylene.