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Rinku Fasteners, a well-respected manufacturer and supplier located in Kolkata, India, specializes in high-performance Super Duplex Steel Nuts designed for tough industrial applications. Known for their precision in manufacturing, top-notch product quality, and a commitment to customer satisfaction, the company employs cutting-edge production technology along with strict quality control measures. Their Super Duplex Steel Nuts are celebrated for their remarkable strength, outstanding corrosion resistance, and long-lasting durability, making them perfect for critical environments. Catering to industries like offshore engineering, petrochemicals, chemical processing, desalination, and power generation, Rinku Fasteners is dedicated to providing reliable, high-quality fastening solutions that meet the demands of modern industry.
Super Duplex Steel Nuts are generally crafted from high-alloy grades such as UNS S32750 and S32760, which are recognized for their balanced combination of austenitic and ferritic microstructures. These alloys boast high levels of chromium, molybdenum, and nitrogen, which contribute to their exceptional resistance to pitting and crevice corrosion. Super Duplex Steel Nuts also showcase impressive mechanical properties, including extremely high tensile and yield strength, superior fatigue resistance, and enhanced toughness. They maintain their structural integrity even in high-pressure, high-temperature, and highly corrosive environments, making them a dependable choice for critical engineering and offshore applications.
| 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.
Super Duplex Steel Nuts find extensive use in industries where top-notch corrosion resistance and exceptional mechanical strength are crucial. In offshore and marine settings, they are utilized in subsea equipment, platforms, and service vessels, ensuring reliability in harsh conditions. Their robust properties make them ideal for applications in oil and gas exploration, chemical processing, and power generation, where safety and performance are paramount. With their ability to withstand extreme environments, Super Duplex Steel Nuts are a go-to choice for engineers looking for durable and effective fastening solutions.
At Rinku Fasteners, we make sure that our Super Duplex Steel nuts are packed in a very special manner. Every nut is packed separately in protective materials to avoid any impact such as mechanical, chemical or microbial on the nuts during transportation. Our cartons are made of durable material and we provide customized packaging services for your products. Proper labeling and packing also help in identification and handling of the products, thus showing our seriousness in providing quality products in good condition.
Rinku Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kolkata, India, with over 8 years of experience serving global industries.
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