Annealed and Pickled Pipe
AP pipe refers to stainless steel pipe that has undergone acid washing treatment, and its corrosion resistance mainly comes from the reaction between the chromium element contained in it and oxygen, which forms a dense protective layer on its surface. The function of acid washing is to allow chromium element to react with oxygen in advance, forming a protective layer, thereby improving the corrosion resistance of stainless steel pipes. During the pickling process, oil stains and other substances contaminated during production on the surface of the pipe will be removed.
Application scenarios of AP management
AP pipes are widely used in various fluid transportation pipelines, such as biotechnology, pharmaceuticals, electronic engineering, purified water, food, chemical, papermaking, chemical fiber industry, cosmetics industry, beer, high-purity gases, etc. The surface treatment methods include acid washing, mechanical polishing, bright annealing, and electrolytic polishing, each with its specific application scenarios and surface roughness requirements
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