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Mazin Fasteners is a reliable manufacturer and supplier of high-performance Super Duplex Steel Bolts in Muscat, Oman, serving industries that operate in harsh and demanding environments. Known for precision manufacturing and strict quality standards, the company delivers bolts that provide exceptional strength, durability, and corrosion resistance. Each Super Duplex steel bolt is produced to ensure accurate threading, secure fastening, and long service life. With a strong commitment to international specifications, timely delivery, and customer-focused service, Mazin Fasteners has earned trust as a dependable partner for critical fastening solutions.
Super Duplex Steel Bolts supplied by Mazin Fasteners are manufactured from advanced alloys containing high levels of chromium, molybdenum, and nitrogen. This balanced composition offers excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. Mechanically, these bolts provide very high tensile and yield strength, superior toughness, and excellent fatigue resistance. They perform reliably under extreme pressure, temperature variations, and aggressive chemical 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 bolts that are used in many high performance industries. In chemical processing, they are able to cope with the attack of aggressive chemicals and high pressures. In marine applications, they are able to withstand the effects of saltwater thus are long lasting. In the oil and gas industry, they offer secure fastening where there is high stress. Furthermore, Super Duplex Steel bolts are applied in power generation and construction because of their ability to withstand harsh conditions.
Super Duplex Steel Bolts from Mazin Fasteners are widely used in industries where strength and corrosion resistance are essential. Common applications include offshore oil and gas platforms, petrochemical plants, marine structures, desalination units, and chemical processing equipment. These bolts are also used in pressure vessels, heat exchangers, pipelines, and structural assemblies exposed to seawater and harsh chemicals. Their durability and reliability make them ideal for ensuring safety and long-term performance in critical industrial applications.
Mazin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Muscat, OMAN, with over 8 years of experience serving global industries.
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