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Bilal Fasteners, located in Jakarta, Indonesia, has earned a solid reputation as a reliable manufacturer and supplier of Duplex Steel S31803 bolts, providing top-notch fastening solutions for a variety of industries. Our Duplex Steel S31803 bolts are celebrated for their remarkable strength and corrosion resistance, making them perfect for challenging environments like marine, offshore, chemical, and petrochemical applications. Crafted to meet international standards, these bolts guarantee durability, precise dimensions, and dependable performance even under high pressure and temperature. At Bilal Fasteners, we prioritize quality, customization, and timely delivery, catering to clients throughout Indonesia and around the globe with expertly engineered duplex steel fasteners.
The composition of Duplex Steel S31803 bolts features a dual-phase microstructure with about 22% chromium, 5–6% nickel, and 3% molybdenum, along with added nitrogen to boost strength. This unique blend strikes a perfect balance between outstanding mechanical properties and corrosion resistance. These bolts boast a tensile strength ranging from 620 to 880 MPa and a yield strength of approximately 450 MPa, surpassing many conventional stainless steels. They also show excellent resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking, making them ideal for harsh and corrosive settings where strength and durability are crucial.
|
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 extensive use in applications that demand exceptional mechanical strength and corrosion resistance. In the marine and offshore sectors, they are utilized in shipbuilding, subsea equipment, and structural assemblies that face saltwater and high stress. In the oil and gas industry, these bolts are essential for pipelines, pressure vessels, and flanged joints. They also play a vital role in chemical processing plants, desalination systems, and pulp and paper facilities. With their impressive strength, resistance to cracking, and long-lasting performance, Duplex Steel S31803 bolts are the go-to choice for fastening in critical and demanding environments.
At Bilal 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.
Bilal Fasteners is a leading manufacturer and supplier of high-quality fasteners in Indonesia, Jakarta, with over 8 years of experience serving global industries.
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