Pickling removes from metal surface dirt, rust and otherwise hard to remove welding scale. In result, it gives an uniform mat-grey steel surface. Pickling produces on steel surface a layer of chromium oxide, which considerably increase chemical resistance. So this process produces also passivation  effect. Pickling is therefore a first step prior to electrochemical polishing.

We offer pickling: stainless steel, copper, brass, bronze and aluminum.

Heat exchangers after pickling