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Hamad Fasteners, a top-notch manufacturer and supplier based in Riyadh, Saudi Arabia, is well-known for providing high-quality fastening solutions tailored to meet the demands of various industries. Among their impressive lineup, Duplex Steel Bolts S31803 stand out for their exceptional strength, resistance to corrosion, and long-lasting durability. Crafted to meet international standards, these bolts are built to perform reliably even in the toughest environments, making them perfect for sectors like oil and gas, petrochemicals, marine engineering, and construction. Hamad Fasteners is committed to delivering fastening products that prioritize performance, safety, and longevity.
Duplex Steel Bolts S31803 feature a well-balanced microstructure of austenite and ferrite, enriched with chromium, nickel, and molybdenum to boost corrosion resistance. This unique composition offers remarkable protection against pitting, crevice corrosion, and stress corrosion cracking caused by chlorides. On the mechanical side, they provide impressive tensile and yield strength, along with enhanced toughness and durability across a range of temperatures and pressures. Their dual-phase structure strikes a perfect balance between strength and corrosion resistance, making them a reliable choice for aggressive environments.
|
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.
These bolts find extensive use in offshore platforms, desalination plants, marine structures, heat exchangers, and chemical processing units. They’re also essential in oil refineries, pipelines, and pressure vessel applications where resistance to chloride-rich conditions is crucial. With their outstanding blend of strength, corrosion resistance, and long-term stability, Duplex Steel Bolts S31803 offer secure and durable fastening solutions for industries operating in harsh and corrosive settings.
At Hamad 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.
Hamad Fasteners is one of the Industrial suppliers and manufacturers of quality fasteners in Riyadh, Saudi Arabia, that has spent more than 12 years serving various industries.
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