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Situated in Dubai, UAE, Al Vishwas Nickel Alloys distinguishes itself as a premier manufacturer and supplier of Duplex Steel S31803 Bolts. Engineered for strength, durability, and reliability, these bolts are ideally suited for demanding industrial environments. Through advanced manufacturing methods and stringent quality inspections, Al Vishwas guarantees that their bolts deliver exceptional corrosion resistance, mechanical performance, and long service life. They provide a wide range of Duplex Steel S31803 Bolts in assorted sizes and specifications to meet varied industry requirements. Be it oil and gas, petrochemicals, marine engineering, construction, or power generation, Al Vishwas is recognized for supplying dependable, high-performance fastening solutions.
Duplex Steel S31803 Bolts feature a distinctive dual-phase ferritic–austenitic microstructure, generally made up of 21–23% chromium, 4.5–6.5% nickel, 2.5–3.5% molybdenum, plus nitrogen to enhance strength and corrosion resistance. This combination offers superb defense against pitting, crevice corrosion, and stress corrosion cracking triggered by chlorides. From a mechanical perspective, S31803 Bolts provide remarkable tensile and yield strength, outstanding toughness, and strong fatigue resistance. Because they can withstand high-pressure, high-temperature, and corrosive conditions, they become the preferred option for critical fastening applications requiring durable reliability and safety.
|
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 Al Vishwas Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Bolts in Dubai, UAE, delivering advanced solutions for every one of your piping requirements. Our modern manufacturing facilities are strategically positioned in the UAE, enabling us to keep an extensive stock of more than 16,000 tons of top-quality materials on hand and ready to ship. We are committed to supplying outstanding products and services, guaranteeing dependability and excellence for our worldwide customers.
Reach out to us for a fast quote tailored to your needs.
Duplex Steel S31803 Bolts are a preferred option in industries that demand high strength, durability, and corrosion resistance. Within the oil and gas sector, they’re vital for pipelines, offshore platforms, and drilling equipment subjected to extreme conditions. Chemical and petrochemical plants rely on them for reactors, pressure vessels, and processing equipment exposed to aggressive chemicals. The marine and shipbuilding sectors employ S31803 Bolts for seawater handling systems and structural assemblies. Their adaptability and dependability make them essential across a range of demanding applications.