Q: Are there three main reasons that cause the insulation layer of prefabricated directly buried insulation pipes to peel off due to heating?
1. The operating temperature of the pipeline network is too high
2. Poor heat resistance of polyurethane composite materials
3. The working steel pipe has not been shot blasted
The insulation layer peeling off due to heat can cause the insulation pipe to lose its trinity effect. As a result, the anchoring force of the soil cannot be effectively transmitted to the working steel pipe. For pipelines installed without compensation or preheating, it may cause local thermal expansion and contraction of the pipeline network. Thus, it damages the overall stability of the pipeline network.
So preventing the insulation layer from peeling off is the key to ensuring the normal operation of the heating pipeline network. Xingbang Company mainly takes the following measures to prevent the peeling of the insulation layer of polyurethane insulation pipes:
1
During the operation of the pipeline network, a reasonable temperature of the conveying medium should be ensured to prevent long-term overheating.
2
The raw materials for producing insulation layers should use high-quality and reliable enterprise products, such as BASF, Bayer, and Hensman.
3
Xingbang Company has 4 fully automatic shot blasting production lines that can perform shot blasting treatment within the range of DN25-1600mm.
4
The inner surface of the outer protective tube is subjected to corona treatment to ensure that the inner surface tension of the outer protective tube reaches 50dyn/cm2.
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Xingbang Company has over 20 years of production experience. The product is widely used in over 200 cities and over 1300 projects. We are a designated supplier for numerous engineering projects.The product has received widespread praise from customers!