DN is the pipe a pipe or a plastic tube?
DN the water supply pipe just shows the diameter of the water supply pipe. It is not clear whether the plastic pipe or the steel pipe. The general water supply pipes are all plastic pipes, and only a few use stainless steel pipes. Ordinary steel pipes will rust.
PE (polyethylene) material is widely used in water supply pipe manufacturing because of its high strength, corrosion resistance, non-toxic and so on. Because it won't rust, it is the ideal pipe instead of ordinary iron pipes. PE due to its unique advantages and is widely used in building water supply, drainage, underground drainage pipe, building heating, gas pipelines, electrical and telecommunications, industrial protective casing pipes, agricultural pipes etc.. It is mainly used in urban water supply, urban gas supply and farmland irrigation.
DN is the nominal diameter. It does not represent the material of the tube. The material for the water supply pipe is usually PE
