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How to distinguish between duplex stainless steel

Release Date:2016-10-18

Duplex Stainless steel on the surface can not distinguish with the naked eye, there is a single material, after you receive the goods sent to the selected part of the inspection. As you said the surface of the color is also required, the light is processed, surface polishing treatment. If it is the acid pickling surface, you want to corrosion resistance for a long time, then it is recommended that you do not choose the bright, because it has damaged the surface of the passivation film. The doors and windows of the house are 304;. Not a series of 400. 400 high carbon content, hard, brittle, corrosion resistance than the Department of the 300 series