What are the consequences of incorrect selection of expansion joints?
Release time:
2020-07-06
In the expansion joint planning, selection is a very important aspect. This is because the selection of aggregates is more complicated, and there are many influencing factors on the material, such as the composition, flow rate, density, and temperature of the internal flowing medium. , It is related to the weather standardization of the external environment and corrosive atmosphere, and the external insulation is also related to the chloride ion content of the insulation material.
In the expansion joint planning, selection is a very important aspect. This is because the selection of aggregates is more complicated, and there are many influencing factors on the material, such as the composition, flow rate, density, and temperature of the internal flowing medium. , It is related to the weather standardization of the external environment and corrosive atmosphere, and the external insulation is also related to the chloride ion content of the insulation material.
For example, the same water vapor pipeline, some use 304 material, but some pictures of expansion joints use 316L material. In view of the fact that it depends on the content of chloride ions in the water vapor and the concentration of free oxygen, the expansion joints with external insulation should be selected Insulation materials that do not contain or contain less chloride ions, beware of pipelines operated in the open.
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