Can sanitary-grade stainless steel pipes be welded, and how should the welds be polished?
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Can sanitary-grade stainless steel pipes be welded? How should the welds be polished? Using only quick connectors results in higher costs.
In a pressurized application, quick connectors are likely not suitable; welding is required. As for the welds, can they be polished and then treated with pickling paste to restore the stainless steel’s metallic luster?
It can be welded; after welding, it is polished and then cleaned
It is possible to use automatic welding with argon shielding; an automatic welder can be used for the welding process, and no further treatment is required after welding. It can be put into use after being purged with nitrogen at a pressure of 5N or higher
It can be welded, but strict welding procedures are required~~ The welding rods must be carefully selected; TIG welding should be used, and the surface should be polished after welding, while the inner surface needs to undergo degreasing, pickling, and passivation treatments~~
Thank you, I used mirror-finished pipe fittings for welding. It seems that the cleaning effect of the pickling paste varies, but it’s still acceptable
Pipes can be welded; 304 loses some of its luster after pickling, while 316L retains its color after pickling