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Rinku Fasteners is a trusted manufacturer and supplier of high-performance Super Duplex Steel Nuts S32750, headquartered in Kolkata, India. The company is known for delivering precision-engineered fastening products designed to perform reliably in highly corrosive and demanding industrial environments. Their S32750 nuts offer exceptional mechanical strength, superior corrosion resistance, and excellent durability, making them ideal for critical applications in marine, chemical, and offshore sectors. With advanced production facilities, stringent quality control measures, and adherence to international standards, Rinku Fasteners consistently provides dependable fastening solutions. Their commitment to quality and customer satisfaction has established them as a leading name in the fastener industry.
Super Duplex Steel S32750 Nuts are composed of high chromium, molybdenum, and nitrogen levels that provide remarkable corrosion resistance and enhanced mechanical strength. The alloy features a balanced duplex microstructure combining austenitic and ferritic phases, delivering high yield strength, excellent pitting and crevice corrosion resistance, and outstanding stress-corrosion cracking resistance. These nuts maintain structural integrity under high pressure and elevated temperatures. With superior toughness, fatigue strength, and long-term durability, S32750 nuts are engineered for use in aggressive, chloride-rich, and highly demanding industrial environments.
| 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 S32750 Nuts are widely used in industries requiring superior strength and exceptional corrosion resistance in harsh operating conditions. They are commonly employed in offshore oil and gas platforms, subsea equipment, desalination plants, and marine engineering projects due to their resistance to chloride-induced corrosion. In chemical processing, these nuts are used in pumps, valves, heat exchangers, and high-pressure proces
At Rinku Fasteners, we ensure that our Super Duplex Steel Nuts S32750 are packaged with the utmost care. Each nut is securely packed in durable, moisture-resistant containers to prevent damage during transport. Our packaging solutions are designed to maintain the integrity of the nuts, whether for bulk shipments or individual orders. We provide customizable packaging options to meet specific needs, ensuring timely and safe delivery of high-quality fasteners to our customers in Kolkata and beyond.
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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