Nitech Stainless Inc has created a name in the Indian market as the leading manufacturer and supplier of Flanges in India. Nitech Stainless Inc has its manufacturing plants in different cities of India. Our steel flanges contain prime quality materials. factory-made from quality steel meeting ASTM and/or AISI standards as a result of higher the standard, higher is that the toughness of the ASTM | ASME | ANSI flanges.