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    Production technology and application of epoxy coal tar anti-corrosion steel pipe

    The production process and use of epoxy coal tar pitch anti-corrosion steel pipe; the three-layer PE production process of epoxy coal tar pitch anti-corrosion steel pipe: at the beginning of production, first use the test pipe section to adjust the preheating temperature and the thickness of the anti-corrosion layer in turn on the production line. Production can start only after all parameters meet the requirements. 1. Use a heat source to heat the steel pipe to a suitable temperature. 2. The epoxy powder coating is evenly applied to the surface of the steel pipe. 3. The coating of the adhesive is carried out during the gelling process of the epoxy powder. 4. The polyethylene layer can be coated by longitudinal extrusion process or lateral winding process. For steel pipes with a nominal diameter greater than 500mm, the lateral winding process should be adopted. 5. When the lateral winding process is used, it should be ensured that the polyethylene in the overlapping part and the polyethylene on both sides of the weld are completely rolled and compacted, and the surface of the polyethylene is prevented from being crushed; when the longitudinal extrusion process is used, the two sides of the weld are not A void should appear. 6. After the polyethylene layer is coated, it should be cooled with water until the temperature of the steel pipe is not higher than 60℃. The interval between the application of epoxy powder and the start of cooling of the anti-corrosion coating should ensure that the fusion-bonded epoxy coating is fully cured. 7. After the anti-corrosion coating is completed, the polyethylene layer at the end of the pipe should be removed. The reserved length of the pipe end is 100mm to 150mm, and the end face of the polyethylene layer should form a chamfer of less than or equal to 30°. 4.8 After the pipe end is treated, according to the user's requirements, the surface of the bare steel pipe can be painted with anti-rust and weldable coating. Anti-rust weldable paint should be applied according to the product specification. The application of epoxy coal tar pitch anti-corrosion steel pipe is very extensive, and the performance after drying is also very good, but it is easy to deteriorate due to high temperature or humidity during storage and use. Therefore, it should be kept away from heat sources or open flames before it is dried and formed, and it should not be exposed in a humid environment. Its application in underground oil pipelines is very common. For example, epoxy coal tar pitch anti-corrosion steel pipe is a pipeline facility with steel pipe and epoxy coal tar pitch coating as the main structure. It is a relatively common underground oil pipeline.

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    The difference between steel jacketed steel insulation steel pipe and ordinary steel pipe

    In our life, no matter where we are, we can see the figure of steel sheathed steel thermal insulation steel pipe, but everyone has a very narrow understanding of steel pipe. They think that there is only one kind of steel pipe. There are two kinds of steel pipes, that is, steel jacketed steel insulation steel pipes and ordinary seamed steel pipes, and these two kinds of steel pipes are completely different in terms of production and use, but it is impossible to lose anyone. Now most of the steel pipes we use in our lives are steel jacketed steel thermal insulation steel pipes. In fact, steel jacketed steel thermal insulation steel pipes are a kind of hollow section, and there are no welds and other linked steels in the pipes, and steel jacketed steel thermal insulation pipes are insulated. The production process of the steel pipe is also very troublesome. First, the solid pipe is perforated to make the precursor capillary of the steel sheathed steel thermal insulation steel pipe, and then the steel pipes for different purposes will be respectively cold drawn or hot rolled to make the steel sleeve. Compared with ordinary round steel pipes, such non-steel steel pipes have strong compressive capacity, and the weight of steel pipes is also very light. It is used in various fields of life, such as construction, transportation, parts and so on. A kind of steel pipe is also used in life, which is seamed steel pipe. This kind of steel pipe is welded by twisting flat steel, so there will be welds left on the outside of this type of steel pipe. The use of seamed steel pipe The field is relatively narrow, generally used in the transportation of water and gas, and the use time is far less than that of steel-jacketed steel insulation steel pipes, and many seamed steel pipes will be unintentionally broken and damaged during installation. , the quality needs to be improved.

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    附近的单身女人联系电话号码