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Rinku Fasteners, located in Kolkata, India, stands out as a reliable manufacturer and supplier of top-notch industrial fasteners, with a special focus on Super Duplex Threaded Rods. Known for their precision engineering and outstanding corrosion resistance, our Super Duplex Threaded Rods are crafted to meet the rigorous demands of the chemical, marine, and oil & gas sectors. We prioritize durability, strength, and reliability, ensuring that each rod goes through thorough quality checks and complies with international standards. Our dedication to excellence and prompt delivery makes us the go-to choice for businesses in need of sturdy fastening solutions in tough environments.
Super Duplex Threaded Rods boast a well-balanced microstructure, featuring about 50% austenite and 50% ferrite, along with high levels of chromium (24–26%), nickel (6–8%), and molybdenum (3–5%), plus a hint of nitrogen. This unique blend provides remarkable corrosion resistance against chloride-induced stress corrosion cracking and pitting. On the mechanical side, they showcase impressive tensile strength (around 800–1000 MPa), yield strength of about 550–700 MPa, and excellent toughness, even in low temperatures. These attributes make Super Duplex Threaded Rods perfect for demanding applications where strength and resistance to harsh conditions are essential.
| 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 Threaded Rods find their place in various industries that demand high strength and corrosion resistance. They’re particularly suited for chemical processing plants, desalination facilities, marine structures, and offshore oil and gas rigs, where exposure to chlorides and harsh environments is common. Additionally, these rods are utilized in structural applications, heat exchangers, and pipelines to guarantee long-lasting durability and safety. Their outstanding mechanical properties, paired with excellent corrosion resistance, make them a reliable choice for critical applications across multiple sectors.
At Rinku Fasteners, the safety of our Super Duplex Steel threaded rods during transportation is a top consideration in order to supply them in the best state. Every rod is wrapped separately to ensure that it is protected from physical injury, rusting and contamination during transportation. We employ the use of cartons that are strong and provide packaging services in accordance to your needs. The products are well packed and labeled to ensure identification and handling is done effectively, which shows our capacity to provide quality products with a lot of concern.
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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