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Poang Fasteners is a reliable manufacturer and supplier of Super Duplex Steel Washers based in Da Nang, Vietnam. We specialize in providing high-performance fastening solutions tailored for industries that face extreme conditions. Our washers are meticulously engineered to ensure outstanding durability, mechanical strength, and resistance to aggressive corrosion. Adhering to ASTM, DIN, and ISO standards, Poang’s super duplex washers come in a variety of grades, sizes, and finishes to meet diverse needs. They are highly sought after in offshore, marine, petrochemical, and power sectors, ensuring secure load distribution, leak prevention, and long-lasting reliability—making them the go-to choice for critical fastening systems around the globe.
Poang Super Duplex Steel Washers are crafted from grades UNS S32750 and UNS S32760, showcasing a well-balanced austenite-ferrite microstructure. This dual-phase alloy delivers remarkable mechanical strength, high yield stress, and impressive impact toughness, even in low temperatures. Super duplex steel is known for its exceptional resistance to pitting, crevice corrosion, and chloride-induced stress cracking, making it a dependable choice in seawater and chemically rich environments. Our washers maintain precise dimensional stability, excellent hardness, and outstanding fatigue resistance. With these superior mechanical properties, Poang’s washers provide unparalleled fastening performance under both static and dynamic loads in critical industries.
| 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.
Poang Super Duplex Steel Washers find their place in various industries where strength, corrosion resistance, and durability are essential. In oil and gas platforms and offshore drilling, they secure joints that are constantly exposed to seawater and high pressure. In marine engineering, they ensure reliable fastening for ships, submarines, and coastal infrastructure. In chemical processing and petrochemical plants, they stand strong against acids, alkalis, and other harsh substances, making them a vital component in maintaining safety and efficiency in these demanding environments.
At Poang Fasteners, we make sure that our Super Duplex Steel washers are packed in the best way possible. Individual protection of each washer is done to avoid any form of damage, corrosion, or contamination that may occur during transportation. We employ the sturdy cartons and allow customization of packaging depending on your requirements. Proper labeling and packing enable identification and handling of the products as per the customers’ requirements, which are part of our mission to provide quality products in good condition.
Poang Fasteners is a leading manufacturer and supplier of high-quality fasteners in Da Nang, Vietnam, with over 8 years of experience serving global industries.
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