Black jacket polyurethane foam insulation tube foam has good mechanical properties and insulation polyurethane insulation pipe application: polyurethane insulation pipe for indoor and outdoor pipes, central heating pipes, central air-conditioning pipe, chemical industry, and other industrial pipeline insulation and cold insulation works. Since the birth of polyurethane synthetic material in the 1930s, polyurethane foamed insulation pipe has been rapidly developed as an excellent thermal insulation material, and its application scope is becoming more and more widespread. It is also widely used in various heating, refrigeration, oil and steam transmission pipelines because of its cumbersome construction and remarkable energy-saving and anti-corrosion effect. It is widely used in various heating, refrigeration, oil and steam pipelines.
Selection of steel pipe:
According to the design and customer's request, the seamless pipe is usually chosen below DN200, and the spiral welded pipe and the straight welded pipe are selected above. After the surface of steel tube is treated by advanced rust removal technology, the grade of steel tube rust removal can reach Sa2 level in the standard, and the surface roughness can reach R=12.5 micron in the standard.
Performance characteristics:
1. Using rigid polyurethane with low thermal conductivity and good thermal insulation as heat insulation material, it has excellent thermal insulation.
2. When the water conservation at 130 C is delivered to 40 kilometers away after normal operation, the cooling rate is only about 1 C.
3. Strong ability of waterproof and corrosion resistance. It can be directly buried in open or water without additional pipe trenches. The construction is tedious and fast, and the comprehensive cost is low.
4. It also has good corrosion resistance and impact resistance at low temperature, and can be directly buried in frozen soil.
5. Prefabricated insulating pipes use corrosion-resistant (HDPE: HDPE) outer casing, which is not affected by biological and chemical corrosion.
6. Pipes with various diameters and insulation thicknesses and matching fittings (elbows, tees, variable diameter pipes, fixed joints, etc.) can be provided according to user's requirements.
7. Implementing products to establish industry standards in cities and towns of the People's Republic of China.
8. In order to ensure the trinity of prefabricated directly buried insulating pipes, the outer surface of steel pipes before foaming and the inner surface corona of plastic pipes are disposed. Among them, the rule of Sa2.5 in the rust removal grade is reached, and the inner surface tension of the outer pipes reaches 50 dynes/cm.
9. Polyethylene external protective pipe is made of high density polyethylene (HDPE) material, supplemented by various additives such as antioxidants. Strict inspection of raw materials and quality of production is stopped to ensure that the quality of production reaches the standard and the technical appeal of directly buried external protective pipe improves the overall quality of external protective pipe. Detailed technical indicators are shown in the table below.
10. The company is equipped with imported and domestic high-pressure foaming machine and hydraulic pipe-piercing machine, which improves the overall quality of products.
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