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Punit Fasteners, based in Delhi, India, has earned a solid reputation as a reliable manufacturer and supplier of top-notch fasteners designed for tough industrial tasks. Among their standout products are the Super Duplex Steel Threaded Rods, known for their remarkable strength and ability to withstand harsh conditions. Crafted with cutting-edge techniques and rigorous quality checks, these rods are perfect for use in offshore, chemical, petrochemical, and marine sectors. Punit Fasteners offers a variety of sizes and specifications to meet global standards, prioritizing durability, performance, and customer satisfaction, making them a top choice for Super Duplex fasteners both in India and internationally.
Super Duplex Steel Threaded Rods are generally produced from grades like UNS S32750 or UNS S32760, showcasing a unique dual-phase microstructure of austenite and ferrite. Their composition boasts high levels of chromium (24–26%), nickel (6–8%), molybdenum (3–5%), and nitrogen, which provide outstanding corrosion resistance—particularly against chloride-induced stress corrosion, pitting, and crevice corrosion. These rods exhibit impressive tensile strength (up to 800 MPa), excellent fatigue resistance, and good weldability. Their mechanical stability under high pressure and temperature makes them perfect for structural applications in demanding industrial settings.
| Standard | DIN, ASTM, BS and all International Standards |
| Specifications | ASTM A479 & ASME SA479 |
| UNS S32760 Nut and Bolts Size | M3 To M56 3/6″ to 2″ |
| Length | 3 to 200 MM |
| Super Duplex Steel 2207 Machine Screws Size | M1.6 To M12 |
| Duplex Steel 2205 Washers Size | M3 To M56 3/6″ to 2″ |
| Tensile Strength(MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) | Hardness Rockwell C (HR C) | |
| Super Duplex Steel Bolts | 760 | 550 | 15 | 32 Max |
| 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.
Threaded rods made from Super Duplex Steel are essential in numerous performance related activities. In chemical processing, they control the contact with the aggressive chemicals and high pressure satisfactorily. In marine applications, they are able to withstand the effects of marine environment such as corrosion, thus providing durability. In the oil and gas industry, they offer secure fastening where stresses are high.
Super Duplex Steel Threaded Rods find extensive use in critical applications that demand both mechanical strength and corrosion resistance. In the oil and gas sector, they are vital for offshore platforms, subsea equipment, and pressure vessels. Their resistance to saltwater corrosion makes them a popular choice in marine environments for shipbuilding and coastal infrastructure. Additionally, these rods are utilized in various other industries where durability and reliability are paramount, ensuring they meet the rigorous demands of modern engineering projects.
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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