Common problems of pipe loose-fitting expansion joint installation

Pipeline loose-fitting expansion joint By analyzing the elements affecting pitting, it can be seen that material, medium, flow rate and time are the primary elements constituting the pitting of recoil pipeline loose-fitting expansion joint. The medium is unchangeable and the existence of long time stagnation phenomenon is unavoidable. In the treatment and transformation of the backwash pipeline leakage, the early years added a hydrophobic pipeline, but there is no practical effect, because it is impossible to drain all the seawater and fully dry, even if there is a very small amount of seawater corrosion can still be carried out at the bottom of the pipeline along the direction of gravity, and because of the increase in the oxygen content of the solution and the evaporation of seawater concentration will accelerate corrosion.
1 . Remove all pipeline loose-fitting expansion joints, refer to the original pipeline route site planning for flange connection pipeline loose-fitting expansion joint (pipeline loose-fitting expansion joint pipeline can not choose welding).
2 . On-site processing and production of pipe loose-fitting expansion joints will be sent to professional pipe loose-fitting expansion joint manufacturers.
3 . The carbon steel pipe section is sandblasted on the surface of the pipe in the pipe loose-fitting expansion joint factory. Then the surface is coated with anti-rust primer and the rubber skin is glued on the surface and inside.
4 . The pipeline loose-fitting expansion joint is checked by EDM to ensure the continuity of the pipeline loose-fitting expansion joint, and the single defective point is treated with epoxy resin.
5 . Vulcanize and fumigate the rubber to harden the pipeline loose-fitting expansion joint.
6 . Use rubber gasket for flange connection and galvanized bolts with anti-corrosion coating for connecting bolts. After the equipment, the surface of the pipeline is coated with anti-corrosion top coat.
Due to the increase of titanium metal, it is useful to control the composition of chromium carbide. The production line has high requirements for material and is very susceptible to material defects; in addition, compared with the traditional process, it is less sensitive in terms of pipeline loose-fitting expansion joints and dimensions. The advantage is that all the defects of the pipe loose-fitting expansion joint can be detected in the previous process. If the CSP process is used to produce the pipe loose-fitting expansion joint, the cold-rolled thin pipe loose-fitting expansion joint of 0.6mm thickness can be produced.