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Santner Nickel Alloys is a trusted manufacturer and supplier of high-quality Duplex Steel Flanges in Hamilton, New Zealand. Known for providing reliable and corrosion-resistant piping solutions, the company offers flanges that combine strength, durability, and precision engineering. Their Duplex Steel Flanges are manufactured using advanced techniques to ensure dimensional accuracy, long service life, and superior performance in demanding industrial environments. With a strong focus on quality, customer satisfaction, and timely delivery, Santner Nickel Alloys has established itself as a preferred partner for industries such as oil and gas, chemical processing, marine, and power generation.
Duplex Steel Flanges are composed of chromium, nickel, molybdenum, and nitrogen, offering excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. Their dual-phase austenitic-ferritic structure provides high mechanical strength, toughness, and stability under high pressure and temperature conditions. These flanges deliver superior tensile strength, impact resistance, and hardness, ensuring reliable performance in harsh and corrosive environments. Their balanced microstructure also supports good weldability and fatigue resistance, making them suitable for long-term use in offshore, chemical, and marine applications.
| Specifications | ASTM A182 / ASME SA182 |
| Size | 1/8″ NB TO 48″ NB |
| Standards | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Grades | S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 |
| Grade | Duplex Steel Flanges |
|---|---|
| C | 0.030 max |
| Mn | 2.00 max |
| Si | 1.00 max |
| P | 0.030 max |
| S | 0.020 max |
| Cr | 22.0 – 23.0 |
| Mo | 3.0 – 3.5 |
| Ni | 4.50 – 6.50 |
| N | 0.14 – 0.20 |
| Fe | 63.72 min |
| Duplex Steel | Flanges |
|---|---|
| Density (g/cm 3) | 7.805 |
| Density (lb/in 3) | 0.285 |
| Melting Point (°C) | 1420 – 1465 |
| Melting Point (°F) | 2588 – 2669 |
At Santner Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel Flanges 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.
Duplex Steel Flanges are widely used in industries that require strong, corrosion-resistant, and durable piping connections. They are commonly installed in chemical processing plants, oil and gas refineries, desalination facilities, and offshore platforms due to their resistance to aggressive and chloride-rich environments. These flanges are also used in pressure vessels, heat exchangers, marine engineering systems, and high-pressure piping networks. Their strength and durability make them ideal for power generation units, wastewater treatment plants, and structural components. Overall, Duplex Steel Flanges ensure safe, long-lasting, and efficient performance in critical industrial applications.
