Water Distribution & House Service Connection PE Pipes & Fittings is recommended that Water Utilities providing protected drinking water, to use HD/MD PE-80 and PE-100 grade pipes conforming to ISO 4427/1996 to make the system totally leak-proof and corrosion resistance. It is a well-known fact that the soil in which the pipes are buried, are of corrosive nature, which triggers outside corrosion of the conventional pipes. Added to this, the leakage of electricity from the underground cables as well as spillage of chemicals and contamination of subsoil with leaky sewerage and drainage pipelines add to the galvanic and chemical corrosion of conventional pipes. Dissolved oxygen and chlorine in the treated water accelerate the inside corrosion, Available in 15mm to 1000mm Range.