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Lina Fasteners, based in Tunis, Tunisia, is a reliable manufacturer and supplier of high-performance Super Duplex Steel S32750 Bolts designed for demanding industrial applications. With advanced manufacturing facilities and strict quality control systems, the company produces bolts that deliver exceptional strength, corrosion resistance, and long-term reliability. Super Duplex Steel S32750 Bolts from Lina Fasteners are engineered to withstand high pressure, heavy loads, and aggressive environments. By meeting international standards and customer specifications, Lina Fasteners continues to support offshore, oil and gas, chemical processing, and marine industries with dependable fastening solutions.
Super Duplex Steel S32750 Bolts are manufactured from a duplex stainless steel containing approximately 25% chromium, 7% nickel, and 4% molybdenum, with added nitrogen to enhance strength and corrosion resistance. This balanced austenitic-ferritic structure provides excellent resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking. Mechanically, S32750 Bolts offer very high tensile and yield strength, excellent fatigue resistance, and good impact toughness. They maintain stability under elevated temperatures and extreme pressure, making them suitable for critical industrial 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 S32750 Bolts are widely used in industries that require high strength and corrosion resistance in harsh environments. They are commonly applied in offshore oil and gas platforms, subsea pipelines, and marine structures exposed to seawater and chlorides. In chemical and petrochemical plants, these bolts are used in pressure vessels, heat exchangers, pumps, and valves. They are also ideal for desalination plants, power generation systems, and pulp and paper processing facilities. Super Duplex Steel S32750 Bolts provide secure and long-lasting fastening, making them a preferred choice for critical applications under extreme conditions.
At Lina Fasteners, our Super Duplex Steel Bolts S32750 are carefully installed to ensure safety and optimal quality. Each bolt is individually inspected and wrapped in corrosion resistant packaging, then placed in sturdy, carefully labeled boxes. Boxes are clearly marked with item details and sizes for easy handling and storage. We prioritize safe and efficient deliveries, so our packaging also includes shock absorbers to prevent damage during transit, and to ensure your fasteners arrive in edible condition deaf
Lina Fasteners is a leading manufacturer and supplier of high-quality fasteners in Tunis, Tunisia, with over 8 years of experience serving global industries.
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