... (approximately one eighth of that of metal pipes), easy to handle and transport Size:1/2",3/4",1",1-1/4 ... of that of metal pipes), easy to handle and transport6) Smooth inner wall, reducing pressure loss and increasing flow speed7) Low noise, reduced ... exposed or hidden9) Wonderful ability in chemical corrosion resistance10) Easy and fast installation, making cost minimized12) Working temperature: 0-60° ...