... pipe 1.manufacturer 2.ISO9001,ISO14001 Spiral Welded Corrosion Steel Pipe StructureEpoxy powder, copolymer micelle,HDPE, ... 25KVImpact resistance >=50KG/cm Advantage1.3PE and 2PE anti corrosion pipe with strong caking property;2. Uniform coating ... sealing with strong insulation performance; 5. strong Anti chemical corrosion and waterproof performance 6. Good environmental protection, convenient ...