How to prevent corrosion of expansion joints?

The more common material for expansion joints is general carbon steel, the actual effect of anti-corrosion is not very good, so the corrosion problem needs to be solved. To choose high-quality anti-corrosion materials in the production, can reasonably and effectively avoid a variety of expansion joints leaching situation, increase the service life of expansion joints, reduce the pipeline maintenance cost fee, to ensure the reasonable operation of the pipeline.

Expansion joint epoxy resin paint material plating anti-corrosion, with architectural paint uniformly and closely coated on the surface of the rust-proof treatment of metal materials pipeline, so that it is blocked with a variety of corrosive substances, is one of the basic ways of anti-corrosion pipeline. In the case of laying pipelines in harsh natural environment such as deep sea, and its finished oil heating and transportation which makes the pipeline environment temperature rise, etc. The expansion joint mentions a large number of provisions for plating characteristics. As a result, the pipeline anti-corrosion plating is increasingly using synthetic materials or composite structures. This raw material and structure should have better dielectric properties, mechanical properties, smooth organic chemical properties and wider temperature integration criteria, etc. Expansion joint wall anti-corrosion coating: In order to avoid pipeline leaching, reduce friction, enhance the volume of transmission and wipe the plastic film of the inner cavity of the pipe. Common paint coatings are amine dry solid epoxy resin adhesive and acrylic resin epoxy resin adhesive, plating thin thickness of 0.038 ~ 0.2Mm. To ensure that the plating and wall thickness bonding solid, it is necessary to carry out surface treatment of the inner cavity of the pipe. It is also possible to choose the pipe clamp rubber support in the whole pipe to fix and then add heat insulation layer to carry out the actual effect of rust prevention of the whole pipe together with the expansion joint pipe layer and wall thickness.