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Santner Nickel Alloys is a trusted manufacturer and supplier of high-quality Super Duplex Steel Bolts in Hamilton, New Zealand. Known for providing fastening solutions that combine exceptional strength, durability, and corrosion resistance, the company serves a variety of demanding industrial sectors. Their Super Duplex Steel Bolts are precision-engineered using advanced technology to ensure consistent performance in harsh and high-pressure environments. With a strong commitment to quality, timely delivery, and customer satisfaction, Santner Nickel Alloys has earned the trust of clients in industries such as offshore, chemical processing, marine, and oil and gas, delivering reliable and long-lasting fastening solutions.
Super Duplex Steel Bolts are made from a carefully balanced alloy of chromium, nickel, molybdenum, and nitrogen, offering excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. Their dual-phase austenitic-ferritic structure enhances mechanical strength, toughness, and thermal stability. These bolts provide high tensile strength, solid impact resistance, and reliable hardness, allowing them to perform consistently in aggressive environments. Their mechanical properties make them suitable for applications exposed to seawater, chemicals, and high-pressure conditions, ensuring long-term durability and dependable fastening performance in demanding industrial settings.
| Standard | DIN, ASTM, BS and all International Standards |
| Specifications | ASTM A479 & ASME SA479 |
| UNS S32760 Nut and Bolts Size | M3 To M56 3/6″ to 2″ |
| Length | 3 to 200 MM |
| Super Duplex Steel 2207 Machine Screws Size | M1.6 To M12 |
| Duplex Steel 2205 Washers Size | M3 To M56 3/6″ to 2″ |
| Grade | C | Cr | Mn | Mo | N | Ni | P | S | Si | Cu |
| Super Duplex Steel Bolts | 0.04 max | 24.0-27.0 | 1.5 max | 0.1-0.25 | 4.5-6.5 | 6.0-8.0 | 0.040 max | 0.030 max | 1.0 max | 1.5 |
| Tensile Strength(MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) | Hardness Rockwell C (HR C) | |
| Super Duplex Steel Bolts | 760 | 550 | 15 | 32 Max |
At Santner Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Super Duplex Steel Bolts in Hamilton, New Zealand, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the New Zealand, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Super Duplex Steel Bolts are widely used in industries that require strong, corrosion-resistant, and long-lasting fasteners. They are commonly applied in offshore platforms, subsea pipelines, chemical and petrochemical plants, and desalination units due to their excellent performance in chloride-rich and corrosive environments. These bolts are also used in pressure vessels, heat exchangers, marine structures, and high-pressure piping systems. Their durability and strength make them suitable for oil and gas projects, refinery operations, power generation, and heavy-duty industrial applications. Overall, they provide safe, reliable, and long-term fastening solutions for critical engineering and operational needs.
