The product consists of three tightly‑integrated components: a steel pipe for medium transportation (serving as the working steel pipe), rigid polyurethane foam (as the thermal‑insulation layer), and high‑density polyethylene outer casing or wound FRP (as the protective layer). Alarm wires can also be embedded in the insulation layer upon customer requirements.
Product Application:
This product is suitable for thermal‑insulation and cold‑preservation projects conveying various media within the temperature range of ‑50℃ to 140℃. It is widely used for insulation and cold‑preservation works in urban heating, greenhouses, cold storage facilities, coal mines, petroleum sites, air‑conditioning systems, chemical industry and other sectors.
Specifications & Models:
Nominal outside diameter: DN15‑1600 mm
Execution Standard:
GB/T 29047‑2021, Prefabricated Direct‑buried Insulated Pipes and Fittings with Rigid Polyurethane Foam and High‑density Polyethylene Outer Casing
