... high-density polyethylene main use:1) urban water supply:PE pipe with safety, hygiene, construction is convenient wait for a comprehensive ... mud, etc.5) replacement cement, steel and cast iron pipe,For laying cement urban, iron pipe etc, can not old pipe re-election by ... pipeline.6) afforestation network: landscaping need lots of water pipe, PE pipe low cost, worth promoting.Update Date:2010/6/10 3 ...