PERT flexible pipe for underfloor heating: 1.Environmental 2.Easy ... and butt-welded PERT-AL-PERT composite pipe and fitting,PERT pipe,PPR pipe and fitting,and other accessories of ... radius is as small as 5 times of pipe's outer diameter,which makes it more convenient ... friction,fluid transportation capability is 30% larger than metal pipe♦ Good chemical corrosion resistance,long service life♦ Quick ...