Duplex Steel Heavy Hex Bolts. DIN 931 DS Hex Bolts. DIN 933 DS Hex Bolts. DIN 960 DS Hex Bolts. DIN 961 DS Hex Screws. DIN 2509 Double End Studs. Duplex Steel Fasteners Manufacturers and Suppliers in India. Duplex Steel Fastener Company Video. Watch our company indroductry video.

Was firstly developed about 70 years ago in Sweden for use in the sulfite paper industry application. These Duplex alloys were originally developed or invented to combat corrosion problems caused by chloride-bearing cooling waters and other aggressive chemical process fluids. With significant addition of nitrogen gas as an alloying agent, improved toughness in the heat-affected zones of welds and excellent chloride corrosion resistance both was achieved thus quickly becoming.

Incorporated in the year 1996, we at Unisteels and Engg. are engaged in exporting, supplying variety of Super Duplex Steel, Duplex Stainless Steel, Duplex Steel Products as Steel Tubes, Buttweld Fittings, Forged Fittings, Flanges. Get an Immediate Business Quote. Duplex Steel and Engineering Company.

Ball Valves Gate Valves Globe Valves DBB Valves. Super Duplex Stainless Steel Valves. We are Manufacturer, Suppliers of duplex steel valves. In a wide range like Ball Valves, Flanged End Ball Valves, Needle Valves, Manifold Valves, Double Block and Bleed Valves, Gate Valves, Globe Valves, Check Valves, Non Return Valves, Safety Valves etc. We also manufacturing Flanges, Fittings, Machined Components, Sheets Metal Components, Stud Bolts etc.