Using high-density polyethylene (HDPE) as the core raw material, these pressure pipes are designed for fire water supply systems, primarily suited for fire hydrant water supply, automatic sprinkler water supply, and other firefighting scenarios. Compared to traditional galvanized steel pipes and seamless steel pipes, they have significant advantages in corrosion resistance and lightweight construction, but they need to meet the special requirements of fire protection systems, such as pressure resistance and fireproofing. Attention should be paid to pressure resistance and impact resistance.
Operating pressure can reach 1.0-2.5 MPa, meeting the pressure requirements of fire hydrant and sprinkler systems; the impact resistance at low temperatures (-20°C) is excellent, making them not easily broken by external forces, outperforming UPVC pipes.
Key features: Extremely strong corrosion resistance can withstand harsh environments such as acid, alkali, and salt spray without the need for anti-corrosion coatings, making them suitable for coastal areas, saline-alkali land, chemical parks, and other environments where traditional steel pipes are prone to rust. The service life can exceed 50 years.
Lightweight and high-strength for easy construction: Weight is only 1/8-1/5 of galvanized steel pipes of the same specification, so transportation and hoisting do not require large equipment; heat fusion/electric fusion connections can form an integrated sealed structure with no risk of leakage, significantly shortening the construction period.
Special requirements for fire protection: - Anti-static: By adding anti-static agents, the surface resistance of the pipes can meet anti-static requirements for firefighting environments. - Fire resistance shortcomings: Pure HDPE is flammable, and its strength decreases rapidly at high temperatures. Indoor exposed installations must be equipped with fire protection measures (such as coating with fire-retardant paints or using fireproof sleeves). The fire resistance limit must comply with GB 50974 "Technical Specifications for Fire Water Supply and Hydrant Systems".
EN
