Super Duplex fasteners, including grade 2507, provide superior corrosion resistance and mechanical strength. They are suitable for aggressive environments, including chemical processing, oil and gas, marine, and offshore applications. Our range of fasteners includes bolts, nuts, studs, screws, washers, and threaded rods. Each fastener is manufactured with precise dimensions to ensure reliable installation and performance. Duplex and Super Duplex fasteners supplied by Pavandeep Steel Center comply with international standards such as ASTM, ASME, and EN. Rigorous quality checks guarantee mechanical properties, surface finish, and dimensional accuracy. Bulk supply and timely delivery are also available.
Fasteners
our products
Fasteners
Pavandeep Steel Center provides high-quality Duplex and Super Duplex stainless steel fasteners designed for critical industrial and offshore applications. These fasteners deliver exceptional strength, durability, and resistance to corrosion in harsh environments. Duplex fasteners, such as grade 2205, feature a balanced austenitic-ferritic microstructure, offering higher mechanical strength and excellent resistance to stress corrosion cracking compared to conventional stainless steels.
Fasteners Grades
- Duplex 2205 (UNS S32205 / S31803)
- Super Duplex 2507 (UNS S32750 / S32760)
Features Of Fasteners
- Good weldability and fabrication
- Durable and long-lasting performance
- Suitable for high pressure and temperature
- Superior resistance to stress corrosion cracking
- High tensile and yield strength
- Excellent corrosion and pitting resistance
Applications Of Fasteners
- Power generation and industrial plants
- Desalination and water treatment plants
- Pressure vessels and heat exchangers
- Offshore and marine structures
- Chemical and petrochemical processing plants
- Oil and gas pipelines and refineries
Specifications of Fasteners
| Specification | Duplex 2205 | Super Duplex 2507 |
| Material Type | Stainless Steel | Stainless Steel |
| Fastener Types | Bolts, Nuts, Studs, Screws, Washers, Threaded Rods | Bolts, Nuts, Studs, Screws, Washers, Threaded Rods |
| Size Range | M6 – M100 / ¼" – 4" (custom sizes available) | M6 – M100 / ¼" – 4" (custom sizes available) |
| Thread Type | Metric / UNC / UNF / BSP / NPT | Metric / UNC / UNF / BSP / NPT |
| Surface Finish | Pickled, Polished, Plain, Zinc/Nickel Plated | Pickled, Polished, Plain, Zinc/Nickel Plated |
| Tensile Strength | 620 – 850 MPa | 750 – 950 MPa |
| Yield Strength | 450 – 550 MPa | 550 – 750 MPa |
| Elongation | 25 – 35% | 20 – 30% |
| Corrosion Resistance | Excellent against pitting & crevice corrosion | Superior, highly resistant to pitting, crevice & stress corrosion |
| Standards | ASTM A193, ASTM A194, ASME B18.2.1 | ASTM A193, ASTM A194, ASME B18.2.1 |