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Mazin Fasteners is a well-respected manufacturer and supplier located in Muscat, Oman, known for providing top-notch Super Duplex Steel Nuts tailored for demanding industrial needs. The company caters to essential sectors like oil and gas, marine, petrochemical, desalination, and infrastructure, where durability and resistance to corrosion are paramount. With state-of-the-art manufacturing facilities, rigorous quality assurance processes, and adherence to international standards, Mazin Fasteners guarantees reliable and high-performing products. Backed by a skilled technical team and a customer-focused approach, they deliver robust fastening solutions, prompt deliveries, and trustworthy support for projects both in Oman and beyond.
vSuper Duplex Steel Nuts are crafted from a carefully balanced mix of chromium, nickel, molybdenum, and nitrogen, resulting in a unique dual-phase austenitic-ferritic microstructure. This special composition offers remarkable mechanical strength and outstanding resistance to corrosion. These nuts boast high tensile and yield strength, excellent fatigue resistance, and impressive impact toughness, even in colder temperatures. They are particularly resistant to pitting, crevice corrosion, and stress corrosion cracking in environments rich in chlorides. The blend of strength and corrosion resistance makes Super Duplex Steel Nuts perfect for high-pressure, high-temperature, and aggressive service conditions.
| 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.
These nuts find extensive use in industries that demand exceptional strength and corrosion resistance in tough operating environments. Typical applications include offshore oil and gas platforms, subsea systems, marine structures, chemical processing plants, and desalination facilities. They are commonly found in pipelines, pressure vessels, heat exchangers, pumps, valves, and flanged connections that are exposed to seawater and corrosive chemicals. Thanks to their durability, long lifespan, and minimal maintenance needs, Super Duplex Steel Nuts are an excellent choice for critical equipment and structural assemblies in energy sectors.
At Mazin Fasteners, we make sure that our Super Duplex Steel nuts are packed in a very special manner. Every nut is packed separately in protective materials to avoid any impact such as mechanical, chemical or microbial on the nuts during transportation. Our cartons are made of durable material and we provide customized packaging services for your products. Proper labeling and packing also help in identification and handling of the products, thus showing our seriousness in providing quality products in good condition.
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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