1. Excellent thermal insulation, using rigid PU with low thermal conductivity and good insulation performance as the insulation material.

　　2. After normal operation, when 130°C water is conveyed 40 km away, the temperature drop is only about 1°C.

　　3. The insulated pipe has strong waterproofing and corrosion resistance, requires no additional trench, and can be buried directly underground or in water. Construction is simple and fast, and overall cost is low.

　　4. Good corrosion and impact resistance; can be buried directly in permafrost.

　　5. Prefabricated insulated pipe uses a corrosion-resistant HDPE (high-density polyethylene) outer jacket. Among the seven advantages of PU direct-buried insulated pipe is immunity to biological and chemical corrosion.

　　6. Pipes in diameters from DN20 to DN1200, with various insulation thicknesses, and matching fittings (insulated elbows, tees, reducers, fixed joints, etc.) can be supplied to customer requirements.

　　7. The product complies with urban construction industry standards of the People's Republic of China, CJ/T 114-2000 and CJ/T 115-2001.

　　Of particular interest:

　　Advantages of PU Insulated Pipe

　　PU direct-buried insulated pipe has outstanding advantages: also known as “pipe-in-pipe,” it is produced by a two-step process and consists of an HDPE outer jacket, a rigid PU foam layer, and a steel pipe.

　　The insulation layer material is rigid PU foam with a density of 60 kg/m³ to 80 kg/m³, fully filling the gap between the steel pipe and the casing, and having a certain bonding strength, so that the steel pipe, outer casing, and insulation layer form a firm integral whole.

　　The foam of PU direct-buried insulated pipe has good mechanical and thermal insulation properties. Under normal conditions it can withstand 120°C; through modification or combination with other insulation materials it can withstand 180°C. Pipeline insulation with PU direct-buried pipe has become a relatively mature advanced technology in some developed countries abroad.

　　The above content is compiled by the PU insulated steel pipe manufacturer. For more details, please follow us. https://www.sdhpgy.com