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Punit Fasteners is a reputable manufacturer and supplier of Super Duplex Steel S32750 bolts, proudly based in Delhi, India. The company is dedicated to providing high-performance fasteners that meet the rigorous demands of heavy industries. These bolts are crafted from top-notch raw materials and utilize advanced technology to ensure they can withstand extreme conditions, particularly in corrosive and high-stress environments. Renowned for their precision manufacturing, prompt deliveries, and competitive pricing, Punit Fasteners serves a variety of sectors, including petrochemical, marine, offshore, and power generation, making them a dependable partner for both local and international industrial projects.
Super Duplex Steel S32750 bolts boast a well-balanced composition of chromium (24–26%), nickel (6–8%), molybdenum (3–5%), nitrogen, manganese, and iron. This distinctive chemical structure provides remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking. The material exhibits impressive mechanical strength, with a tensile strength of about 795 MPa and a yield strength of roughly 550 MPa. These bolts also retain excellent toughness and impact resistance, even in sub-zero temperatures. Their dual-phase microstructure, consisting of austenite and ferrite, enhances their structural integrity, making them perfect for demanding industrial applications where both strength and corrosion resistance 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 Steel S32750 bolts are commonly utilized in highly corrosive and mechanically challenging environments. They are particularly favored in offshore oil and gas platforms, where exposure to saltwater and high pressures requires exceptional material strength. In the chemical processing sector, they are used in pressure vessels, heat exchangers, and reactors that come into contact with aggressive acids and chlorides. Power plants rely on them for high-temperature components, while the marine industry employs them for propeller shafts, pumps, and hull fastenings. Their reliability in brine, seawater, and caustic environments makes them a top choice for various applications.
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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