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Punit Fasteners, based in Delhi, India, stands out as a top manufacturer and supplier of high-performance fasteners, including top-notch Super Duplex Steel Fasteners. These fasteners are designed to endure extreme pressure, temperature, and highly corrosive environments, making them perfect for critical applications in offshore, chemical, and marine industries. Adhering to international standards, Punit Fasteners guarantees precision, durability, and quality in every product. They offer a diverse selection of Super Duplex fasteners—like bolts, nuts, washers, and threaded rods—in various grades and sizes. With a solid reputation for reliability, Punit Fasteners caters to both domestic and global markets.
Super Duplex Steel Fasteners are generally crafted from grades such as UNS S32750 and S32760, known for their unique dual-phase (austenitic-ferritic) microstructure. These fasteners boast around 24–26% chromium, 6–8% nickel, 3–5% molybdenum, and added nitrogen, which together provide outstanding resistance to pitting, crevice corrosion, and chloride stress corrosion cracking. They showcase impressive tensile strength (up to 800 MPa), high yield strength, and exceptional fatigue resistance. Moreover, they maintain their structural integrity even under high temperatures and pressure. Their remarkable mechanical and corrosion-resistant properties make them ideal for harsh environments where standard stainless steels might fail.
| Specification | IS, BS, ASTM, ASME |
| Grade | Super Duplex Steel | UNS S32750 | S32760 |
| Standard | ASTM A479 ASME SA479 |
| Length | 3mm to 200mm |
| Form | Screw, Nuts, Bolts, Washers |
| Size | 3/6″ to 2″, M3 – M56, Custom Sizes |
| Application | Oil & Gas, Heat exchanger and condenser, Automobile Industry, Engineering, Power plants, Refineries & Petrochemicals, Ship building, Desalination Plants |
| Phosphorus | Sulphur | Silicon | Carbon | Manganese | Nickel | Molybdenum | Nitrogen | Copper | Chromium |
|---|---|---|---|---|---|---|---|---|---|
| 0.035 % max | 0.02 % max | 0.80 % max | 0.03% Max | 1.20 % max | 6.00 – 8.00 % | 3.00 – 5.00 % | 0.24 – 0.32 % | 0.50 % max | 24.0 – 26.0 % |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Super Duplex Steel fasteners are essential in several high-performance applications. In chemical processing, they efficiently address issues of working with aggressive chemicals and high pressure. In marine environments, they do not corrode with sea water hence they are very reliable in the long run. In the oil and gas industry, they offer secure fastening where high stress is exerted on the equipment. In addition, Super Duplex Steel fasteners are used in power generation and construction industries due to their excellent performance in severe conditions.
Super Duplex Steel Fasteners find extensive use in industries that demand exceptional mechanical strength and high corrosion resistance. In the oil and gas sector, they are vital for offshore platforms, subsea pipelines, and pressure vessels. In marine engineering, their ability to resist saltwater corrosion makes them perfect for shipbuilding and coastal infrastructure projects. Additionally, they are employed in chemical processing, power generation, and other demanding applications where reliability and durability are paramount. With their robust performance, Super Duplex Steel Fasteners are a go-to choice for engineers and manufacturers alike.
Punit Fasteners is a leading manufacturer and supplier of high-quality fasteners in Delhi, India, with over 15 years of experience serving global industries.
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