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The length of the steam pipeline is 5000 m. There is less steam consumption in winter, which makes the flow rate lower than 15 m/s, but the total temperature drop should not exceed 20 °C. The traditional materials cannot meet the requirements, so an upgrade
Due to the actual working conditions of the construction sites, the depth of the buried pipelines should not exceed 1.0 m, and the surface temperature should be less than 45 °C. The traditional insulation method can hardly meet the requirements.
Equipped with long gas injection pipelines, traditional heat preservation terminal has problems such as low steam temperature and large water content. As a result, high-quality insulation materials are needed to reduce the heat loss. In addition, some
