... : ISO 4429 and BS6920Certification: ISO9001, ISO14001, OHSAS18001Applications: water supply, industrial liquids transportation and sewage treatmentHDPE Pipe Application: ... non-toxic, not fouling, more suitable for urban water supply main conduit and buried tube, safety, hygiene, ... raw material conveying pipe. 4.Landscaping water supply network Landscaping need lots of water pipe, PE pipe toughness and ...