Construction Method of Polyurethane Insulation Pipe
1. External folding of steel pipes, some manufacturers are excessively pursuing high efficiency. In the process of consumption, the reduction is too large, which will lead to folding of steel pipes during rolling. It will form various folding lines on the surface, which will greatly reduce the strength of steel products.
2. The surface of the pipe is linen. When the groove used to manufacture the steel pipe is used for a long time, serious wear will occur, which will make the surface of the steel pipe uneven.
3. Scar on the outside. If the steel used to make steel pipes contains more impurities, the material is uneven, and the machine used for processing is too crude, it can make impurities bite into the rolling rod and cause scarring.
4. The steel pipe trademark and printing are not standard, the quality of the high-quality pipe is good, and the material quality is average. When the printing stops, the steel pipe with uneven material will not show the scene of non-standard, and the steel pipe with uneven material will easily show the scene of inclination when printing.
5. The inner diameter of steel tube is shaken. When the steel-making data are not uniform, the steel-making temperature does not fluctuate or the rolling mill bounces due to rough equipment, the inner diameter of steel tube will be shaken greatly, resulting in uneven stress on steel bar and easy to fracture.
In polyammonia heat preservation pipeline, the steel-jacketed steel heat preservation pipe is the most important one. It can also stop burying directly underground without concrete structure, that is, the thermal shrinkage of the task steel pipe stops inside the pipe, which reduces the cost of data, prolongs the construction date, and ensures the safety of the heating pipeline. It is more safe and widely used in the same temperature environment, especially for low temperature steam pipeline projects. The steel sleeve steel insulation pipe with temperature up to 150 -450 C is made up of external protection steel pipe and steel pipe anti-corrosion, polyurethane foam insulation layer and internal task steel pipe. Steel sleeve steel vapor composite insulating pipe is suitable for transporting steam or other media below 2.5 MPa and 350 degrees Celsius. The product uses steel pipe as outer protective layer, which has the advantages of high strength, not easy to damage, simple construction and maintenance, and long service life.
According to different sliding modes, the thermal insulation structure of steel-jacketed insulation pipe can be divided into internal sliding mode and external sliding mode. 1. Internal sliding mode: thermal insulation structure consists of task steel pipe, aluminium silicate, drag reduction layer, micro-porous calcium silicate, thermal insulation layer, stainless steel fastening strip, aluminium foil reflective layer, polyurethane insulation layer, coated steel pipe and external anti-corrosion layer. 2. External sliding type: thermal insulation structure consists of task steel pipe, glass wool thermal insulation layer, aluminum foil reflective layer, stainless steel fastening belt, sliding guide bracket, air thermal insulation layer, external steel pipe and external anti-corrosion layer.
Polyurethane direct-buried insulating pipes are welcomed by people because of their long-lasting corrosion resistance and aging resistance. Therefore, there is a great demand market, and there is a great demand for consumption of polyurethane insulating pipes. With regard to the consumption and processing of polyurethane insulating pipes, it is necessary to stop disposing of them according to their detailed uses and structures. As for the application of insulation layer with inner tube and outer sleeve, polyurethane foamed insulation pipe is usually indirectly filled with foaming slurry between the two pipes, forming and foaming at one time.
In summary, all the above-mentioned Shandong Hipper Pipe Technology Development Co., Ltd. provides, want to know more about polyurethane insulation pipe manufacturers, welcome to pay attention to our website: https://www.sdhpgy.com Thank you for your support!
