1.Five layers PE(PE-X,PPR,PE-RT),STEEL,PE 2.OHSMS,R.I.SO9001, ... .Long-life 1.Raw material:PE(PE-X,PPR,PE-RT)& Steel2.PE(PE-X,PPR,PE-RT) STEEL PE pipe is ... . Out Diameter from 20mm to 200mm 3.This PE(PE-X,PPR,PE-RT)-STEEL-PE composite pipe is widely use ... /T 253;OHSMS;R.I.SO9001 Certificates verify,PE(PE-X,PPR,PE-RT) STEEL PE pipe is in top quality ...