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  It was discovered at the turn of the century that steel, nickel as well as chromium alloy steel, possessed resistance to corrosion properties. In 1912, the highest degree of resistance was obtained, together with exceptional mechanical qualities, thanks to unique heat treatment. V2A & V4A were coined at the time, with V standing for test (Versuch in German) and A standing for austenite, and are still used as synonyms for stainless steel today. The international nomenclature for  instrumentation fittings , which denotes the most prevalent alloy of chromium, nickel, and stainless steel. Ball valve manufacturers in india utilise the DIN defined numerical identification to correctly distinguish stainless steels, such as stainless-steel fasteners. The Material's Properties and Advantages The Aluminum alloy fittings from best Nrv valve manufacturers in Indiaare acid-resistant austenitic steel, that has good corrosion resistance due to its low carbon content. It has been tested to r