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Material differentiation of expansion joint

In Expansion joint In the process of using, the pipeline environment plays a decisive role in the expansion joint. In different pipelines, the suitable product structure is different, the suitable product material is also different, and the material selection of sealing ring is also different. For example, in gas pipelines, cast steel, ductile iron and stainless steel are more commonly used. In wear-resistant pipelines and corrosive gas transportation, ductile iron and stainless steel materials can be used. However, compared with conventional materials, the price of these two materials will be higher, but the corresponding use time will be longer Long term.

The vacuum sealing of gas pipeline to pipeline is relatively high, so it is special for gas transmission Force transfer joint The rubber seal ring used is made of EPDM material. In general, it mainly relies on rubber sealing ring to seal the pipeline. On the one hand, it can prevent pipeline leakage, and it can also rely on EPDM rubber to resist the corrosion of corrosion gas on pipeline seals. It has been proved that the effect is very good in gas transmission pipeline.

When it comes to the problem of corrosion, if there is corrosion or scaling in the pipeline, how to solve it.

There are probably two common scaling modes of expansion joint, one is dirty sediment, and the second is rust formed by chemical erosion. This kind of rust is due to the corrosion of acid-base solution on the inner wall of pipeline.

For a very good situation, it is recommended that we use steel ball to gently wipe the inner wall of the pipe, which can easily remove the sediment.

Another kind of scaling needs to be cleaned with weak alkali and weak acid solution, and the concentration of solution should not be too high, otherwise it will cause secondary damage in the expansion joint. After cleaning, wipe the inner wall of expansion joint with dry towel.

    Shanghai Huanjing is a professional research and production of expansion joints, force transfer joints and other pipeline equipment manufacturers, strong technical force, sophisticated production equipment, sound quality inspection means, on the basis of widely absorbing the advantages of similar products at home and abroad, bold use of new technology, new technology, so that products more adapt to the installation of different regions in China, for the design, construction, maintenance of the project It brings great convenience and benefit.

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