Ayten Tube Fittings, a reputable manufacturer and supplier located in Addis Ababa, Ethiopia, focuses on crafting Duplex Steel BSP/NPT Fittings that excel in high-pressure and corrosive settings. These fittings are precision-engineered to ensure seamless connections in piping and instrumentation systems that adhere to British Standard Pipe (BSP) or National Pipe Thread (NPT) standards. Made from top-notch Duplex Stainless Steel, they boast remarkable resistance to pitting, stress corrosion, and oxidation. Ayten’s Duplex Steel BSP/NPT Fittings guarantee leak-free, long-lasting connections for industries like oil and gas, petrochemical, marine, power generation, and chemical processing, where reliability and safety are paramount.
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These Duplex Steel BSP/NPT Fittings contain about 22–25% chromium, 5–7% nickel, 3% molybdenum, along with trace amounts of nitrogen and manganese, resulting in a unique dual-phase microstructure. This blend strikes an ideal balance between strength, toughness, and corrosion resistance. They showcase impressive tensile strength (up to 750 MPa) and yield strength around 450 MPa, along with exceptional resistance to chloride-induced cracking and erosion. These characteristics ensure that the fittings maintain their integrity even under extreme pressures, fluctuating temperatures, and the corrosive conditions often found in industrial piping and instrumentation systems.
Duplex BSP / NPT Fittings Specifications
- Specifications: ASTM A182/ ASME SA182
- Size: 1/8” NB to 4” NB (Socketweld & Screwed-Threaded)
- Dimensions : ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
- Types : Socketweld Fittings, Screwed-Threaded Fittings
- Pressure Rating: Threaded End-2000lb/ 3000lb/ 6000lbs / Socket-weld End-3000/ 6000/ 9000lbs
- Thread: NPT, BSPT, BSPP
Duplex BSP / NPT Fittings Chemical Composition
| MATERIAL | C | MN | SI | P | S | CR | MO | NI | N | FE |
| Duplex BSP / NPT Fittings | .030 Max | 2.00 Max | 1.00 Max | .030 Max | .020 Max | 22.0-23.0 | 3.00-3.50 | 4.50-6.50 | 0.14-0.20 | Balance |
Duplex BSP / NPT Fittings Mechanical Properties
| DENSITY | MELTING POINT | TENSILE STRESS | YIELD STRESS (0.2%OFFSET) | ELONGATION |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 116000 , MPa – 800 | Psi – 80000 , MPa – 550 | 15 % |
Types of Duplex BSP / NPT Fittings
Equivalent Grades of Duplex BSP / NPT Fittings
| STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN | OR |
| Hastelloy BSP C276 | 2.4819 | N10276 | NW 0276 | ХН65МВУ | NiMo16Cr15W | ЭП760 |
| Hastelloy NPT C22 | 2.4602 | N06022 | NW 6022 | – | NiCr21Mo14W | – |
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We offer These Products as per DIN, ISO, JIS or ANSI Standard.
Largest Manufacturer and Supplier of Duplex BSP / NPT Fittings in Addis Ababa, Ethiopia
Duplex BSP / NPT Fittings Uses
Duplex Steel BSP/NPT Fittings are widely utilized in various settings like oil refineries, chemical plants, offshore platforms, desalination units, and hydraulic systems, where it’s crucial to have strong and corrosion-resistant connections. With their threaded BSP and NPT ends, these fittings make installation, maintenance, and replacement a breeze in pneumatic lines, gas pipelines, and process control systems. They’re perfect for managing air, gas, water, steam, oil, and even corrosive fluids, ensuring reliable sealing and effective flow control. Ayten’s Duplex Steel BSP/NPT Fittings are the go-to choice for industries that require leak-free performance, exceptional mechanical strength, and durability in tough environments for critical piping applications.
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