What are the ways of anti-corrosion treatment for double flange limit expansion joint?

What are the ways of anti-corrosion treatment for double flange limit expansion joint?
The more commonly used material of double flange limit expansion joint is ordinary carbon structural steel, which is not very good in anti-corrosion effect, so it needs to do anti-corrosion treatment. To use anticorrosion treatment in processing can effectively prevent the occurrence of various corrosion phenomena of double flange expansion joints, prolong the service life of expansion joints, reduce pipeline maintenance costs, and ensure the safe and effective operation of pipelines.
1 . Double flange expansion joint epoxy resin paint coating anti-corrosion
Using paint uniformly and densely coated on the surface of the rust removed metal pipe to isolate it from various corrosive media is one of the basic methods of pipeline corrosion protection. Laying pipelines in harsh environments such as ground and sea, as well as heating and conveying of oil products that increase the temperature of pipelines, etc., puts forward more requirements on the coating performance. Therefore, pipeline anti-corrosion coating is increasingly using composite materials or composite structures. These materials and structures should have good dielectric properties, physical properties, stable chemical properties and wide temperature adaptation range, etc.
2 . Anti-corrosion coating of double flange expansion joint wall.
Anti-corrosion coating: In order to prevent corrosion in the tube, reduce frictional resistance, improve the number and the film coated on the inner wall of the tube. Commonly used coatings are amine curing epoxy resin and polyamide epoxy resin, coating thickness of 0.038 ~ 0.2 mm. To ensure that the coating is firmly bonded to the pipe wall, the inner wall of the pipe must be surface treated. Can also be fixed in the whole pipeline with pipe clamp support, and then add insulation layer to and double flange expansion joint pipe layer and pipe wall together with the whole pipeline anti-corrosion effect.
In fact, in the use of various pipelines, expanders and clamps flexible joints and quick joints in the pipeline connection have a common role, the operation of the pipeline plays a role in expansion and compensation displacement, because they have this commonality in the pipeline connection, so they can be complementary in the use of pipeline connection, expansion joints interchangeable alternative role, only in specific cases selected a certain type of series of pipe fittings joints used.