Duplex Steel Fasteners
Duplex Steel Fasteners
Premium-quality Duplex Steel Fasteners manufactured for secure, durable joints in piping, structural and industrial equipment applications.
- Bolts
- Nuts
- Studs
- Screws
- Washers
- Custom Fasteners
Duplex Steel Fasteners Manufacturer in India
Sawariya Metal Industries is a manufacturer, supplier, stockist and exporter of Duplex Steel Fasteners in different sizes, grades, specifications and finishes for industrial and engineering applications.
Duplex Steel Fasteners are mechanical joining components such as bolts, nuts, studs, screws and washers used to assemble flanges, structures, machinery and equipment.
Duplex stainless steel has a two-phase austenitic-ferritic structure that delivers higher strength than standard austenitic grades together with good resistance to pitting, crevice corrosion and chloride stress corrosion cracking.
Typical applications for Duplex Steel Fasteners include oil & gas, chemical processing, petrochemical, desalination, marine applications, pulp & paper, heat exchangers, pressure vessels and general engineering.
Key Features of Duplex Steel Fasteners
High Strength
Higher yield strength than conventional 300-series stainless steels.
Corrosion Resistance
Good resistance to pitting, crevice and general corrosion.
SCC Resistance
Improved resistance to chloride stress corrosion cracking.
Cost Efficient
Strength and durability help reduce material and lifecycle cost.
Duplex Steel Fasteners Specifications
| Parameter | Specification |
|---|---|
| Product | Duplex Steel Fasteners |
| Standard | DIN, ASTM, BS and all International Standards |
| Specification | ASTM A182 / ASME SA182, F51, F60 |
| Length | 3 mm to 200 mm |
| Size | M02 to M30 |
| Grades | UNS NO. S 31803, S 32205, S 32550, S 32750 |
| Types | Bolts, nuts, Washers, Anchor Fasteners, Stud Bolts, Eye Bolt, Stud, Threaded Rod, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners, etc |
Equivalent Grades of Duplex Steel Fasteners
| STANDARD | WERKSTOFF NR | UNS |
|---|---|---|
| Duplex 1803 | 1.4462 | S31803 |
| Duplex 2205 | 1.4462 | S32205 |
Types of Duplex Steel Fasteners
Bolts
Hex, heavy hex, stud, U, J, T, eye and foundation bolts.
Nuts
Hex, heavy hex, lock, wing, dome and nylock nuts.
Studs & Threaded Rods
Fully and partially threaded studs and rods.
Screws & Washers
Machine screws, socket screws, plain and spring washers.
Applications & Industries
- Oil & Gas
- Chemical Processing
- Petrochemical
- Desalination
- Marine Applications
- Pulp & Paper
- Heat Exchangers
- Pressure Vessels
- Water Treatment
- Offshore Platforms
- Fabrication
- General Engineering
Quality & Inspection
Quality-Focused Manufacturing & Supply
Duplex Steel Fasteners can be supplied with inspection, testing and documentation according to the applicable specification and customer purchase requirements.
- Dimensional & thread inspection
- Visual inspection
- Material grade verification
- Chemical composition verification
- Mechanical / proof load testing as applicable
- Hardness testing as applicable
- Material Test Certificate (MTC)
- Customer-specific documentation
Why Choose Our Duplex Steel Fasteners?
Complete Range
Bolts, nuts, studs, screws and washers.
Material Choice
Matched to strength and corrosion needs.
Standard & Custom
Standard and drawing-based fasteners.
Reliable Threads
Accurate threads for secure assembly.
Duplex Steel Fasteners Manufacturer, Supplier & Exporter
Sawariya Metal Industries supplies Duplex Steel Fasteners for domestic and international projects in a wide range of sizes, grades and specifications. Products can be supplied in standard and custom dimensions according to drawings and purchase order requirements.
Every order can be supported with Mill Test Certificates, inspection reports, third-party inspection on request and secure export-worthy packaging.
Share your size, grade, quantity and specification requirements with our team to receive a competitive quotation for Duplex Steel Fasteners.
Related Duplex Steel Products Products
Duplex Instrumentation Fittings
Duplex Instrumentation Fittings include seamless and welded instrumentation tubes together with compression fittings, connectors and valves used to carry process fluids and signals safely to instruments.
Duplex Steel Ferrule Fittings
Duplex Steel Ferrule Fittings are compression-type tube fittings that use front and back ferrules to grip the tube and create a reliable, leak-tight seal without welding.
Duplex Steel Plates, Sheets & Coils
Duplex Steel Plates, Sheets & Coils are flat-rolled products supplied as hot-rolled plates, cold-rolled sheets, coils, strips and cut shapes for fabrication, pressure vessels and process equipment.
Technical Note: Technical values should be verified against the applicable ASTM / ASME / EN specification, purchase order requirements and Mill Test Certificate (MTC) for the supplied product.