Name:Pex Al Pex Pipe Material: PE,PEX,PERT,AL Dimension: 16mm-32mm ... Red Standard: ASTM F1281/ASTM D1282 PEX AL PEX PIPE 1, Non-toxic, corrosion resistance,light weight, good mechanical ... pipe is small, not easy scaling, fluid not being polluted, and effective large diameter. 3, 100% insulating oxygen,stop oxygen's penetration. Aluminum ... according to customer packing needs Pex Al Pex pipe overlap/laser