Anti-corrosion of underground pipelines
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How can pipes in underground trenches that are not passable be protected from corrosion after being insulated with rock wool? Should it be covered with galvanized iron sheet just like an overhead pipe, or should anti-corrosion treatment be applied as in the case of buried pipes? ? ? ?
Ugh,,,,, please explain it more clearly
Yeah, are you talking about corrosion protection for pipes or insulation for corrosion protection? I’m confused.
Consider wrapping it with glass fiber cloth and applying anti-corrosion asphalt
I agree with the suggestion from the 4th floor: if insulation is needed, just apply rust-proof paint on the inside and use insulation on the outside
Applying a layer of anti-rust paint is sufficient; for applications requiring higher strength, asphalt combined with release fabric can be used
Reply to 1# 363307964: The key is to determine what fluid is flowing inside your pipeline The methods used for protecting the outer walls of pipelines vary depending on the fluid medium flowing within them. For example, insulation cotton is primarily used to protect the outer walls of crude oil pipelines, while water pipelines are coated with epoxy coal tar pitch combined with glass fiber cloth. For gas pipelines, 3PE coating is currently the most common method used for protection. The main decision is still made based on the actual operating conditions of the pipeline; for specific details, you can consult a professional pipeline anti-corrosion company.
For the anti-corrosion of underground pipelines, four-oil-three-cloth or five-oil-one-cloth systems are generally used to enhance anti-corrosion protection; the oil used is epoxy coal tar pitch paint, while the cloth used is glass fiber cloth