Polyurethane products are a series of products produced by people on the market using polyurethane as the basic raw material. They are mainly used in large heavy industry manufacturers such as mines, coal washing plants, power plants, and steel mills. The polyurethane products produced mainly include polyurethane screen plates, sheets, polyurethane cyclones, etc. Compared with other rubber and nylon products, they have more characteristics such as wear resistance, hydrolysis resistance, and high temperature resistance. Product composition and characteristics High strength rigid polyurethane foam cold insulation pipe holder is mainly made of multifunctional organic isocyanate and mixed polyether polyol? A kind of rigid polyurethane foam prepared by complex chemical reaction under the condition of catalyst and a variety of special additives, which interact with each other, has effectively improved the compressive strength of the product in the production process due to the selection of specific polyurethane raw materials with higher functionality, the scientific selection of auxiliary materials and material ratio, and the physical and chemical properties of the prepared cold insulation tube bracket products can fully meet the requirements of the application process. According to the inspection of relevant authoritative departments, all indicators reach or exceed the technical level of similar products abroad. Its products have the following advantages: high density, which can be adjusted according to different applications, with the density of 200~500 kg/m3? High compression strength, up to 4-20MPa? Thermal conductivity 0.052. Has low thermal conductivity, low moisture permeability, and low water absorption, meeting the requirements for cold insulation? It has excellent hydrolysis resistance, aging resistance, acid and alkali resistance and other chemical properties? Not easy to burn, flame retardant meets national security requirements for density- The density of the pipe support at 165-180 degrees is between 300-500 degrees. The thickness of the insulation layer is 100mm