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Punit Fasteners is a prominent manufacturer and supplier of Duplex Steel Screws located in Delhi, India. We provide a wide range of high-performance fastening solutions made from top-quality duplex stainless steel. Known for their strength, durability, and resistance to corrosion, our Duplex Steel Screws are designed for the demanding needs of industrial applications. With a strong commitment to quality and precision, our screws conform to international standards such as ASTM, DIN, and ISO. Punit Fasteners is trusted across industries like marine, oil and gas, and chemical processing for delivering custom, reliable, and high-performance fastening products.
Duplex Steel Screws are made from a two-phase microstructure alloy that includes about 22 to 25% chromium, 4 to 7% nickel, and 3 to 5% molybdenum, with nitrogen added to boost strength. This combination provides them with high tensile strength (620 to 880 MPa) and yield strength (450 to 550 MPa), along with excellent resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking. These screws also show high fatigue resistance and decent weldability. Their hardness usually ranges from 25 to 35 HRC. Duplex Steel Screws operate reliably under high pressure, extreme temperatures, and tough chemical environments.
| 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.
At Punit 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.
Punit Fasteners is a leading manufacturer and supplier of high-quality fasteners in Delhi, India, with over 15 years of experience serving global industries.
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