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Puri Fasteners, a well-respected manufacturer and supplier based in Chennai, specializes in high-quality Super Duplex Steel Fasteners that are perfect for tough industrial applications. These fasteners are celebrated for their incredible strength, resistance to corrosion, and impressive durability, making them ideal for challenging environments like high-pressure and chloride-rich settings. Crafted with precision and in line with international quality standards, Puri Fasteners guarantees that each fastener provides reliable performance and mechanical stability. They are widely utilized in the oil and gas, marine, chemical, and power generation sectors, offering robust, high-performance fastening solutions that are crucial for critical infrastructure and industrial operations.
Super Duplex Steel Fasteners are made from a unique alloy that includes high levels of chromium, molybdenum, and nitrogen, featuring a balanced austenitic-ferritic microstructure. Typically, they contain around 25–26% chromium, 6–7% nickel, 3% molybdenum, and nitrogen. These fasteners boast excellent mechanical properties, such as high tensile and yield strength, superior fatigue resistance, and remarkable protection against pitting, crevice corrosion, and chloride stress corrosion cracking. Their dual-phase structure ensures outstanding toughness, stability at high temperatures, and reliable long-term performance in aggressive chemical, marine, and high-pressure industrial environments.
| 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 widely used in offshore and subsea installations, pipelines, and marine engineering projects due to their exceptional resistance to seawater and chloride-induced corrosion. In the oil and gas industry, they secure pumps, valves, heat exchangers, and pressure vessels. Chemical and petrochemical plants rely on these fasteners for reactors, storage tanks, and processing equipment that come into contact with harsh chemicals. Additionally, they are employed in desalination plants, power generation units, and heavy industrial machinery, providing dependable, long-lasting solutions.
We understand the importance of safe packaging of our Super Dupex Steel fasteners hence we ensure that they get to you in the best condition. Every fastener is covered with protective materials to ensure that they do not get damaged, rust or get contaminated in the course of transportation. We utilize sturdy cartons and we can also provide you with personalized packaging depending on your needs. Clear labeling and proper packing make it easier to identify and handle the products, thus proving our point that we value the quality of our products and the manner in which they are handled.
Puri Fasteners is a leading manufacturer and supplier of high-quality fasteners in Chennai, India, with over 8 years of experience serving global industries.
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