If you want to distinguish the difference between PE water supply pipe and PE gas pipe, first observe the appearance of the pipe, you can clearly see that there are four blue lines on the appearance of PE water supply pipe, and some manufacturers will produce white pipe body or other color pipes However, there are blue lines attached to them; and the PE gas pipe has an orange or yellow line on the surface, so it can be distinguished from the appearance which is the water supply pipe and which is the gas pipe.

The raw materials of HDPE water supply pipe and PE gas pipe are different

Raw materials used——The raw material of PE water supply pipe is high-density polyethylene, which is mixed with white granular masterbatch and 2%-3% black color masterbatch; the raw material used for PE gas pipe is special material for gas pipe, which belongs to mixed ingredients , the color is black.

The specifications and models of HDPE water supply pipes and PE gas pipes are different

Specifications and models——The general specification of PE water supply pipe is dn16mm-dn1400mm; the general specification of PE gas pipe is dn20mm-dn630mm, but the general use specification is below dn315mm, and cast iron pipes are usually used for specifications above 315mm.

The characteristics of HDPE water supply pipe and PE gas pipe are different

PE water supply pipe: excellent corrosion resistance, good hygienic performance and long service life; unique flexibility and excellent scratch resistance; very outstanding low temperature resistance; good rapid crack growth fracture toughness. PE gas pipe: reliable connection; good low temperature impact resistance; good stress crack resistance; good chemical corrosion resistance; aging resistance, long service life; good wear resistance; good flexibility; small water flow resistance; easy handling; many A new way of construction.

The connection technology of HDPE water supply pipe and PE gas pipe is different

Different technical requirements for PE water supply pipes: when hot-melt connection, the temperature must be 210±10°C, and care should be taken to avoid overheating; when working in pipe trenches, necessary safety measures must be considered; water is recommended as the pressure test medium. During testing, measures should be taken to prevent pipe movement or damage. PE gas pipe: elongation at break ≥ 350; a thermal stability (oxidation induction period) > 20min; longitudinal shrinkage ≤ 3%; melt mass flow rate (MFR), MFR change before and after processing 0.01Mpa, dn ≥ 250mm distribution system.

HDPE water supply pipes and PE gas pipes have different application ranges

Different scope of application PE water supply pipes: suitable for water supply pipes made of PE63, PE 80 and PE 100 materials (see 4.1). The nominal pressure of the pipe is 0.32MPa～1.6MPa, the nominal outer diameter is 16mm～1000mm, and it is suitable for the temperature not exceeding 40℃. PE gas pipe: urban tap water pipe network system; urban and rural drinking water pipes; chemical, chemical fiber, food, forestry, printing and dyeing, pharmaceutical, light industry, papermaking, metallurgy and other industrial material and liquid transportation pipes; agricultural irrigation pipes; post and telecommunications lines, electricity Wire protection sleeve.

The above are the major differences between HDPE gas pipes and water supply pipes. I hope it will help you in purchasing. Haili Group is a manufacturer specializing in the production of HDPE pipes and fittings. Our products are exported to many overseas countries. If you have this demand, please feel free to contact us.