Top quality large plastic pipe with ISO9001:2008 quality standard size:dn20-110mm PN:1.6Mpa,2.0Mpa,2.5Mpa Material: ppr-al Top quality large plastic pipe with ISO9001:2008 quality standard1, hygienic and poison free: this product is green construction material to be used for the pure water pipe system.2, heat-resistant: under of the assigned continuous long period operating pressure, the ...