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Suitable working environment temperature for pipe expansion joint

Apr. 30, 2019

Suitable working environment temperature for pipe expansion joint

The appropriate temperature of the Pipe Expansion Joint should be at 0 ℃ -- 120 ℃ is the most appropriate, also can be applied to heat pipe expansion joint, can also be applied to water supply and drainage pipeline, the temperature of the heat pipe is much higher than the temperature of the water supply and drainage pipe, heat pipe temperature are generally above 300 ℃, and the drainage pipe generally temperature at 0 ℃, 120 ℃, then for heat pipe, expansion joint what? Pipe temperature is used as appropriate with the change of sealing material of expansion joint.

Pipe expansion joint epoxy resin paint coating anti-corrosion, pipe expansion joint is uniform and compact coating on the surface of the rust removed metal pipe, so that it is isolated from various corrosive media, is one of the basic methods of pipeline anti-corrosion. Since the 1970s, in the polar, Marine and other harsh environment laying pipeline, as well as oil heating and transportation of pipeline temperature increase, etc., put forward more requirements for coating performance. Therefore, the pipeline anticorrosive coating more and more USES the composite material or the composite structure. These materials and structures should have good dielectric properties, physical properties, stable chemical properties and wide temperature range.

Pipe Expansion Joint

A film applied to the inner wall of a pipe to prevent corrosion, reduce friction resistance, and increase throughput. The coatings commonly used for expansion joints are amine cured epoxy resins and polyamide epoxy resins. The coating thickness is 0.038 ~ 0.2 mm. In order to ensure the coating and the tube wall bond firmly, must carry on the surface treatment to the tube inner wall. Since the 1970s, the coating of the inner and outer walls of pipes tends to be made of the same material, so that the coating of the inner and outer walls of pipes can be carried out at the same time. In the medium and small diameter heat transfer pipelines for crude oil or fuel oil, in order to reduce the heat dissipation of pipe expansion joints supplied by the Rubber Joint Supplier to the soil, a composite layer of heat preservation and anti-corrosion is added on the outside of the pipelines. The commonly used thermal insulation material is a rigid polyurethane foam plastics, applicable temperature is - 185 ~ 95 ℃. This kind of material texture is soft, in order to improve its strength, add a layer of high density polyethylene layer on the outside of the heat insulation layer, form a composite material structure, in order to prevent groundwater infiltration inside the heat insulation layer.