The reasons for the external anti-corrosion bulging of steel steam buried insulation pipes with steel sleeves are multifaceted. The following are some possible reasons:

Uneven anti-corrosion coating: If the anti-corrosion coating on the surface of the steel sleeve steam buried insulation pipe is not evenly applied, some areas may form thicker anti-corrosion coatings, while others may have insufficient anti-corrosion coatings. Over time, thicker anti-corrosion coatings may bulge, causing bulges.

Temperature changes: Due to temperature changes, steel steam buried insulation pipes with steel sleeves may experience thermal expansion and contraction, causing the anti-corrosion layer to bulge.

Corrosion: If the prefabricated buried steel steam insulation pipe fittings corrode, the surface may show rust and unevenness, causing the anti-corrosion layer to bulge.

Mechanical damage: During transportation, installation, or use, steel steam buried insulation pipes with steel sleeves may experience mechanical damage, resulting in damage or bulging of the anti-corrosion layer.

Construction quality issues: Improper operation or lack of necessary protective measures during the construction and installation process may cause damage or bulging of the anti-corrosion layer.

Unreasonable pipeline structure design: If the structure design of the steel sleeve steel steam buried insulation pipe is unreasonable, it may cause the anti-corrosion layer to bulge. If the thickness and uniformity of the anti-corrosion layer are not considered in the design, or necessary measures are not taken to protect the anti-corrosion layer.

Quality issues with pipeline anti-corrosion materials: If the material quality of the steel sleeve steel steam buried insulation pipe does not meet the requirements, it may cause the anti-corrosion layer to bulge. For example, insufficient strength, toughness, corrosion resistance, or other quality issues of the material.

The influence of environmental factors: Environmental factors may also have an impact on the anti-corrosion layer of steel jacket steam buried insulation pipes. Environmental factors such as high temperature, high humidity, and corrosive gases. May cause damage or bulging of the anti-corrosion layer.

In summary, the reasons for the anti-corrosion bulging outside the steel steam buried insulation pipe are multifaceted, including uneven anti-corrosion coating, temperature changes, corrosion, mechanical damage, construction quality issues, unreasonable pipeline structure design, and quality problems of anti-corrosion materials. To solve this problem, corresponding measures need to be taken based on the specific reasons, such as improving construction technology, optimizing structural design, and selecting high-quality materials.