Pipeline welding is a key link in cold storage installation, and its quality directly determines the tightness and safety of the refrigeration system. Cold welding, slag inclusion and uncleaned oxide scale in pipeline welding are common defects that easily lead to system failures and operational hazards.

         Cold welding in pipeline welding means insufficient fusion between the weld and the base metal, resulting in poor connection strength and poor sealing. It is prone to refrigerant leakage during long-term operation, affecting the normal operation of the refrigeration system and increasing maintenance costs.

         Slag inclusion refers to the residue left in the weld during the welding process, which reduces the structural strength of the weld, easily causes stress concentration, and may lead to pipeline cracking and refrigerant leakage under long-term pressure.

         Uncleaned oxide scale on the pipeline surface before welding will affect the fusion effect of the weld, lead to poor welding quality, and even cause welding defects such as cold welding and slag inclusion, laying hidden dangers for the stable operation of the pipeline.

         These welding defects will directly affect the tightness and safety of cold storage pipelines, increase operational hidden dangers and maintenance costs. Strictly standardizing the welding process and eliminating cold welding, slag inclusion and uncleaned oxide scale are crucial to ensuring the stable operation of the cold storage system.

         Standardizing pipeline welding operations, cleaning oxide scale before welding, and avoiding cold welding and slag inclusion can effectively ensure welding quality and provide a solid guarantee for the long-term stable operation of cold storage.