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Pengkumta Fasteners, located in Bangkok, Thailand, has earned a solid reputation as a reliable manufacturer and supplier of Super Duplex Steel Bolts. These bolts are crafted to deliver high-quality fastening solutions that prioritize strength, durability, and outstanding resistance to corrosion. With meticulous attention to detail and rigorous quality control, each bolt is engineered to perform consistently in even the toughest industrial settings. Renowned for their resilience and extended service life, Pengkumta’s Super Duplex Steel Bolts find their place in various sectors, including offshore, marine, chemical, petrochemical, and construction industries, where safety and performance in challenging conditions are paramount.
These Super Duplex Steel Bolts are constructed from a specialized super duplex stainless steel alloy, featuring a well-balanced austenite-ferrite microstructure that is enriched with chromium, molybdenum, and nitrogen. This unique blend grants them exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking, particularly in environments rich in chlorides and acids. They boast a yield strength of approximately 550 MPa and a tensile strength that exceeds 750 MPa, along with remarkable toughness, fatigue resistance, and durability, making them perfect for critical applications in harsh settings.
| 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.
You’ll find Super Duplex Steel Bolts widely utilized in offshore oil and gas platforms, subsea equipment, and marine engineering projects, where exposure to seawater and extreme conditions is a given. They’re also essential in chemical and petrochemical plants, where equipment faces aggressive chemicals and high temperatures. In desalination facilities, power generation units, and heavy industrial machinery, these bolts ensure reliable performance under severe conditions. Furthermore, they play a vital role in structural frameworks and construction projects, providing enduring strength, corrosion resistance, and dependable fastening in demanding environments.
Pengkumta Fasteners is a leading manufacturer and supplier of high-quality fasteners in Bangkok, Thailand, with over 8 years of experience serving global industries.
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