1,hdpe pipe pn10; 2, for pe100 from 20mm to 630mm; 3, for pe 80 from 63mm to 710mm; 4, with pn0.4mpa ... , 0.6mpa, 0.8mpa...1.6mpa 1,hdpe pipe pn10PE water ... 50 years under proper use6.Recycled and Environment-friendly hdpe pipe pn10with pe 100 and pe 80