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At Hazlewood Fasteners in Canberra, Australia, our Duplex steel screws are engineered for environments where ordinary screws surrender to corrosion, stress, and salt-laden brutality. Built from a dual-phase alloy that unites raw strength with elite corrosion defense, these screws lock components with unwavering tenacity in offshore rigs, marine systems, industrial machinery, and chemical plants. From splash-zone turbulence to high-pressure processing equipment, they resist cracking, pitting, and corrosive attack. When your assembly demands screws that don’t flinch under punishing weather, dynamic loads, or aggressive media, Hazlewood’s Duplex steel screws deliver steadfast, long-life fastening security and elite durability.
Duplex steel screws are crafted from a balanced ferritic-austenitic alloy enriched with chromium, molybdenum, and nitrogen — granting nearly double the strength of conventional stainless steels. Their microstructure offers exceptional resistance to chloride-induced stress corrosion, pitting, and fatigue. Engineered for high tensile and yield power, they hold threads with precision, prevent galling, and maintain preload under intense mechanical vibration and corrosive exposure. Designed for structure and endurance, Duplex screws ensure exceptional clamping strength, abrasion resistance, and long-term stability in environments where chemical aggression and mechanical strain collide.
| Standard | : | ASTM A193, A194 / SA193 / SA194 |
| Dimension | : | ASTM, DIN, BS, GB, IS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Bolts Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Screw Size | : | M02 to M33 | Custom Sizes |
| Heat Treatment | : | Annealing, Stress Relieving, Case Hardening, Quenching and Tempering. |
| Type | : | Hex Bolt/ Hex Screw, Square Head Bolt, U Bolt, Carriage Bolt, Eye Bolt, T Bolt/ J Bolt/ L bolt, Flange Bolt, Coach Screw etc. |
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 screws excel in high-stress, high-corrosion environments across marine engineering, desalination systems, offshore oil platforms, pulp-and-paper mills, and chemical processing facilities. They secure flanges, pumps, process equipment, ship components, coastal structures, and high-pressure mechanical assemblies. Ideal for dynamic and vibration-heavy installations, they maintain joint integrity in saltwater, acidic environments, abrasive flows, and high-humidity conditions where conventional stainless hardware breaks down. When projects demand screws that outlast the elements and defend structural stability under unforgiving industrial forces, Duplex steel screws provide the reliability, endurance, and corrosion-proof performance that critical systems rely on.
At Hazlewood Fasteners, we take utmost care while packing our Duplex Steel screws so that they can reach their destination in the best condition. Every screw is packed in individual protective materials to avoid any harm, rusting or contamination during transportation. Our packaging products include sturdy cartons and special packaging that meets your requirements. This way, we ensure that all our products are well packed and labeled to enhance identification and handling to ensure that the clients receive their products in the best condition possible.
Hazlewood Fasteners is a leading manufacturer and supplier of high-quality fasteners in Canberra, Australia, with over 8 years of experience serving global industries.
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