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Mazin Fasteners stands out as a top manufacturer and supplier of Duplex Steel Bolts S31803, proudly based in Muscat, Oman. We specialize in delivering high-performance fastening solutions tailored for tough industrial settings. Our bolts are meticulously engineered to ensure they offer exceptional strength, outstanding corrosion resistance, and long-lasting durability, even in the most challenging and aggressive environments. At Mazin Fasteners, we produce Duplex Steel S31803 bolts in line with international standards, utilizing cutting-edge manufacturing techniques and rigorous quality control measures. With a strong commitment to reliability, quality, and prompt delivery, we cater to industries throughout Oman and the Middle East, providing dependable and efficient fastening solutions that are perfect for critical applications.
Our Duplex Steel S31803 bolts are crafted from a well-balanced austenitic-ferritic stainless steel alloy, which includes around 22% chromium, 5–6% nickel, 3% molybdenum, and some nitrogen. This unique blend gives them remarkable corrosion resistance, especially against stress corrosion cracking and pitting, while also ensuring high tensile and yield strength. These bolts are known for their excellent toughness, good ductility, and impressive fatigue resistance. The duplex structure guarantees dimensional stability and reliable mechanical performance, even under harsh chemical, thermal, and mechanical conditions, making them a perfect fit for industrial applications that demand strength and durability.
|
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 |
|
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
|
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.
Duplex Steel S31803 bolts find their place in various applications where high strength and corrosion resistance are essential. They are frequently used in the oil and gas, petrochemical, chemical processing, marine, and power generation sectors. Common applications include pressure vessels, pipelines, flanged joints, heat exchangers, and structural assemblies that are exposed to chloride-rich or corrosive environments. Their blend of mechanical strength and resistance to pitting and stress corrosion ensures a long service life, operational safety, and minimized maintenance in demanding industrial conditions.
At Mazin Fasteners, Duplex Steel Bolts S31803 are meticulously packaged to ensure their integrity during transit. Each bolt is securely wrapped in protective material to prevent damage, and then placed in sturdy, weather-resistant boxes or crates. Custom packaging options are available to meet specific requirements. Our efficient packaging process safeguards the quality and performance of the bolts, providing customers with reliable, ready-to-use products. This careful handling reflects our commitment to excellence and customer satisfaction.
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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