304 Stainless Steel Welding Tube | How to deal with rust spots?

How to deal with rust spots on 304 Stainless Steel Welding Tube?

1. Chemical methods

Use pickling paste or spray to assist the re-passivation of the rusted parts to form a chromium oxide film to restore corrosion resistance. After pickling, in order to remove all contaminants and acid residues, it is very important to rinse with clean water. After all treatments, re-polishing with polishing equipment and sealing with polishing wax. For those with slight rust spots, you can also use 1:1 gasoline and engine oil mixture to wipe off the rust spots with a clean cloth.

2. Mechanical methods

Sandblasting, blasting with glass or ceramic particles, annihilation, brushing and polishing. It is possible to use mechanical methods to wipe off the contamination caused by the previously removed materials, polishing materials or oblique materials. All kinds of pollution, especially foreign iron particles, can become a source of corrosion, especially in humid environments. Therefore, mechanically cleaned surfaces should be properly cleaned in dry conditions. The use of mechanical methods can only clean the surface, and cannot change the corrosion resistance of the material itself. Therefore, it is recommended to re-polish with polishing equipment after mechanical cleaning and seal with polishing wax.