Production Process
Utilizing high-functional polyether polyols and multiple-methyl diphenyl polyisocyanates as the main raw materials, it is foamed through chemical reaction under the action of catalysts, foaming agents, surfactants, etc.
Key Features
Polyurethane insulated pipe shells have a low thermal conductivity among insulation materials, thereby minimizing heat loss of the material to a low extent.
Waterproof, corrosion-resistant, aging-resistant:
Due to the closed-cell rate of polyurethane foam exceeding 92%, using polyurethane foam as the insulation layer for buried pipelines not only provides thermal insulation but also effectively prevents the penetration of water, moisture, and various corrosive liquids and gases, as well as the growth and development of microorganisms.

Polyurethane foam can bond firmly with various materials, so as an insulation layer for buried pipes, it rarely requires consideration of adhesion issues with a corrosion-resistant layer. The temperature range for polyurethane insulation is +120℃ to +196℃, with short-term (up to a dozen hours) capability of reaching +190℃. If the user requires a long-term temperature of 190 degrees, we can mold with high-temperature material according to the user's needs.
Main Applications
Polyurethane pipe shells boast excellent features such as light weight, high strength, thermal insulation, noise reduction, flame retardancy, cold resistance, corrosion resistance, non-absorbent, and easy and quick installation, making them an indispensable material for thermal insulation, waterproofing, and sealing in industries like construction, transportation, oil, chemicals, electricity, and refrigeration.
Polyurethane rigid foam panels (tubes): Used for insulation and heat preservation of various pipelines both indoors and outdoors, including central air conditioning pipelines and industrial pipelines in chemical engineering.
Polyurethane rigid foam buried pipes, suitable for centralized heating pipelines, various refrigeration and industrial pipelines.