The choice of material for the manufacture of a polyurethane steel pipe has a significant impact on its performance and service life. Specifically, for the manufacturing material of polyurethane lined steel pipes, the following requirements need to be met:
1. Good corrosion resistance: The lined polyurethane steel pipe is mainly used for transporting corrosive liquids, so its lining material is required to have good corrosion resistance, be able to resist the erosion of various chemicals, and ensure the normal use of the pipeline.
2. Good thermal insulation performance: Polyurethane material has good thermal insulation performance, which can effectively prevent the transmission of heat, ensure the temperature stability of the conveying medium, and reduce the loss of energy.
3. Good mechanical properties: the lined polyurethane steel pipe needs to withstand a certain amount of pressure and vibration, so its material is required to have 4. It has good mechanical properties, can withstand external loads and stresses, and ensures the stability and safety of the pipeline.
5. Good stability: The lined polyurethane steel pipe needs to work in different environments and temperatures, so its material is required to have good stability, be able to adapt to various environmental conditions and temperature changes, and ensure the normal use of the pipeline.
6. Environmental protection and safety: The material lined with polyurethane steel pipe should meet the requirements of environmental protection and will not cause pollution to the environment, and at the same time, it should also ensure its safety performance and will not cause harm to the human body.
1. Pipe diameter: The pipe diameter of the polyurethane steel pipe lined with polyurethane usually has DN25, DN40, DN50, DN80, DN100, DN125, DN200, etc., and the appropriate pipe diameter is selected according to the actual needs.
2. Length: The length of the lined polyurethane steel pipe is generally 6 meters, 9 meters, 12 meters, etc., and the appropriate length is selected according to the actual situation of transportation and installation.
3. Wall thickness: The wall thickness of the lined polyurethane steel pipe varies according to the different pipe diameter and pressure level, and the common wall thickness is 20mm、2.5mm、3.0mm, etc., choose the appropriate wall thickness according to the actual needs.
4. Connection method: There are many connection methods for lined polyurethane steel pipes, such as welding, flange connection, socket connection, etc., and the appropriate connection method is selected according to the actual needs and working conditions.
5. Anti-corrosion treatment: The lined polyurethane steel pipe needs to be treated with anti-corrosion, and the common anti-corrosion treatment methods include internal anti-corrosion treatment, external anti-corrosion treatment, electrochemical protection, etc., and the appropriate anti-corrosion treatment method is selected according to the actual needs and working conditions.