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What problems will occur when the stainless steel pipe fails the inspection for corrosion

Mr. Laijing Bu January 8, 2026


Insufficient intergranular corrosion resistance of stainless steel pipes may cause several problems during use, mainly including: 

1. Mechanical performance degradation: Intergranular corrosion weakens the bonding force between grains, and in severe cases, it can completely eliminate the mechanical strength, making stainless steel pipes more prone to rupture or deformation when subjected to external forces. 

2. Decreased corrosion resistance: Intergranular corrosion can reduce the corrosion resistance of stainless steel pipes. This effect is more pronounced in environments with high corrosivity. The decrease in corrosion resistance will shorten the service life of the stainless steel pipes and increase maintenance costs. 

3. Affected processing performance: Surface defects may cause a decline in the processing performance of stainless steel water pipes, increasing the difficulty and cost of subsequent processing. For instance, during processes such as cutting, bending, or connection, problems like cracks, deformations, or fractures may arise. 

4. Shortened service life: Intergranular corrosion can cause problems in aspects such as the corrosion resistance, mechanical properties, and processing performance of stainless steel pipes, ultimately leading to a shorter service life. Over time, the defect areas may gradually expand and trigger more serious issues, such as leakage and rupture. 

Therefore, for stainless steel pipes, the failure of intergranular corrosion inspection will lead to a decline in their performance during actual use, increase maintenance costs, and potentially shorten their service life. To avoid these problems, appropriate preventive measures should be taken, such as using ultra-low carbon stainless steel and optimizing the heat treatment process, to ensure that the quality and performance of the stainless steel pipes meet the requirements for use.


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