... Color:black with blue line,blue,white HDPE water pipe for fire controlAdvantage1.Non-toxic, no heavy metal additives, no fouling, ... many chemical mediums,or electron chemical corrosion. except for few strong oxidants3.High strength, good performance to resist the environmental ... whole engineering,5.Smooth interior wall, small water resistance, high flow capacity,6.Long service life :up to 50 years ...