Duplex Steel Fasteners

Vision Alloys is a reliable manufacturer and supplier of Duplex Steel Fasteners, offering a full range of industrial-grade nuts, bolts, washers, studs, and custom fastening components. Known for their excellent strength and corrosion resistance, our Duplex fasteners are designed to perform under extreme pressure and in aggressive environments. Our fasteners are designed to provide a long service life and durability, regardless of whether they are used in marine, chemical, construction, or offshore applications. Engineers and procurement teams worldwide have entrusted us with their confidence due to our consistent quality and precise dimensions.

UNS S31803 fastener and UNS S32205 fasteners are duplex stainless steel alloys that are employed in the production of these fasteners. The material is a balanced blend of austenitic and ferritic stainless steel, with a chromium content of approximately 22%, nickel content of 5–6%, molybdenum content of 3%, and added nitrogen. Chlorides induce stress corrosion, crevice corrosion, and pitting, which this combination provides exceptional resistance to. Our Duplex Fasteners are compliant with international standards, including DIN EN 1.4462, ASTM A182, ASTM A479, and ASME SA182. These fasteners are appropriate for international commerce and documentation compliance, as they are classified under HSN Code 731815.

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• Standard

  B18.2.1

• Form

  Hex, Square, Round, Threading

• ASTM

  ASTM A479 / SA 479

• SHARE

We provide a diverse selection of duplex steel nuts and bolts, such as hex bolts, heavy hex nuts, threaded rods, socket cap screws, spring washers, ordinary washers, and stud bolts and bolts. The duplex steel fastener sizes range from M6 to M64 with threading options in UNC, UNF, and metric standards. Both metric and imperial units are available upon request. These fasteners are extensively employed in high-load or corrosive environments, such as heat exchangers, desalination units, oil refineries, and bridges, where performance is significant.

All our fasteners undergo rigorous testing to ensure they meet mechanical and dimensional standards. Each batch is supplied with mill test reports, third-party inspections, and quality certifications. Duplex steel nut bolt prices typically range between $0.30 and $15 per piece, depending on size, type, and coating. We also provide competitive pricing on bulk orders and project-based supply contracts with quick lead times and reliable stock availability.

As a committed Duplex Steel fasteners exporter, Vision Alloys serves clients in the USA, Europe, Southeast Asia, and North America. To guarantee that our fasteners are delivered to global clients in optimal condition, we offer export packaging, documentation, and technical support. To obtain high-performance Duplex bolts, nuts, or complete nut and bolt assemblies, please reach out to us today for a custom quotation that is customized to your specifications, pricing, or samples.

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Specifications of Duplex Steel Fasteners

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Types of Duplex Steel Fasteners

DSS Nuts

Duplex Steel Bolt

Duplex Washer

Duplex Stud Bolts

Duplex Hex Bolt

Duplex Threaded Rod

Duplex Steel Anchor Bolt

Duplex Steel Spring Washer

Other Types Of Duplex Steel Fastener

Duplex Steel Fastener Application Industries