Home > Duplex Steel > Duplex Steel S31803 Bolts
Xuan Nickel Alloys, a reputable manufacturer and supplier based in Da Nang, Vietnam, specializes in top-notch Duplex Steel S31803 Bolts that are designed for exceptional strength, durability, and corrosion resistance. Crafted with precision and adhering to international standards, these bolts perform remarkably well in environments rich in chlorides and under high pressure. You can find them in various forms, including hex bolts, stud bolts, anchor bolts, and machine bolts, making them perfect for secure fastening in critical applications. They’re commonly used across industries like chemical processing, oil and gas, marine, desalination, and power generation, ensuring they deliver reliable performance over the long haul.
What sets Duplex Steel S31803 Bolts apart is their unique dual-phase microstructure, which combines austenite and ferrite, along with a blend of Chromium, Nickel, Molybdenum, and Nitrogen. This special composition grants them outstanding resistance to pitting, crevice corrosion, stress corrosion cracking, and general corrosion in harsh environments. Mechanically, these bolts boast double the strength of standard austenitic stainless steels, providing high tensile strength, toughness, and fatigue resistance. Their ability to maintain stability even under high mechanical stress and temperature fluctuations makes them a go-to choice for demanding fastening needs.
|
Material |
Specification |
Standards |
Size
|
Length |
|
Duplex Steel S31803
|
IS
BS
ASTM
|
ASTM / ASME – A/ SA 479 / 479 |
3 mm
to
200 mm
|
M02 to M30
|
|
Grade |
Tensile Strength
(MPa) min |
Elongation
(% in 50mm) |
Yield Strength
0.2% Proof (MPa) min |
Hardness
Rockwell C (HR C) |
|---|---|---|---|---|
| Duplex Steel Bolts S31803 |
621 |
25 |
448 |
21 max |
At Xuan Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Bolts in Da Nang, Vietnam, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Vietnam, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Duplex Steel S31803 Bolts are widely utilized in sectors that require robust and corrosion-resistant fasteners. In chemical and petrochemical facilities, you’ll find them in reactors, heat exchangers, and process piping systems that face harsh chemicals. The oil and gas industry relies on them for offshore platforms, subsea pipelines, and refineries, where resistance to seawater and sour gas is essential. In the marine and desalination fields, these bolts are used in pumps, valves, and structural assemblies that are constantly exposed to saltwater. Power generation plants also depend on their strength and durability in turbines, boilers, and high-pressure systems, ensuring safe and efficient operations.