... .anti-corrosion pipe for petroleum,water,gas,ect 2.2PE,3PE coating anti-corrosion pipe 3.ISO9001, ... Round Secondary Or Not: Non-secondaryApplication: petroleum Pipe Surface Treatment:2/3PEAlloy Or Not: Non-alloyPackaging ... or according to the quantitySpecifications1.anti-corrosion pipe for petroleum,water,gas,ect2.2PE,3PE coating ... quality PE anti-corrosion pipe for petroleum(China manufacture)