Does 304 stainless steel need anti-corrosion treatment when buried?
Thread Content
Does 304 stainless steel require anti-corrosion treatment when buried?
This is generally not required, but it is necessary to acid-wash the weld seam to prevent the accumulation of iron ions
The main body of the pipeline does not need to be anti-corrosive treatment; however, the welding joints must be protected against corrosion! This is also the weakest point in pipeline safety! This is because at the welded area, there are gaps or metal or non-metal deposits on the surface; under the action of corrosive agents, punctate and ulcerative damage occurs preferentially in these gaps, which is known as crevice corrosion. You can refer to the relatively detailed explanations on buried pipelines in the \"Technical Specifications for the Construction of Industrial Metal Pipelines\".
It is necessary; since the soil contains a high amount of corrosive agents, traditional asphalt mastic or PE cold-applied tape can be used for corrosion protection
It’s necessary; otherwise, it will leak within a few years
When burying something underground, a trench is usually needed; it cannot come into direct contact with the soil{:1_90:}
Stainless steel does not mean it will never rust
It needs to be done; the projects I’ve worked on have involved stainless steel 304 with a PE anti-corrosion coating