Duplex Steel S31803 Tube Fittings
Arrow Piping Solutions is one of the leading suppliers and exporters of Duplex S31803 Compression Tube Fittings in India. Our fittings are designed for high-performance applications and are known for their corrosion resistance, durability, and pressure-handling capacity in harsh industrial environments.
We offer a complete range of Duplex Steel Compression Tube Fittings, including Bulkhead Unions, Female Elbows, Flared Tube Fittings, Male Connectors, Branch Tees, Adapters, and Twin Ferrule Fittings. These are available under standards like Parker, Swagelok, and other major international designs. Our products are suitable for high-pressure and high-temperature applications across various industries.
Arrow Piping Solutions stocks Duplex S31803 Compression Tube Fittings in sizes ranging from 1/16” to 2” (2mm to 50mm) and offers products with NPT, BSP, ISO, and SAE thread types. Our fittings undergo rigorous quality testing and come with comprehensive certification and inspection reports.
| Size Range | 1/16 in. to 2 in. & 2mm to 50 mm |
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| End Connection Thread Type | NPT - ASME B1.20.1, ISO/BSP - ISO 228 & ISO 7, SAE - ASME B1.1 |
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| Dimensional Range | 1/16” to 2” (imperial), 2 mm to 50 mm (metric) |
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| Working Pressure | Up to 2000 to 6000 PSI |
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| Type | Tube to Union, Tube to Male, Tube to Female, Instrument Pipe Fittings, Accessories |
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| Standard | Werkstoff Nr. | UNS |
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| Duplex 2205 | 1.4462 | S31803 |
| OD | OD Actual (inches) | Thread Designation | NPT TPI | BSP TPI |
| 5/16 | 0.3125 | 1/16 | 27 | 28 |
| 13/32 | 0.405 | 1/8 | 27 | 28 |
| 35/64 | 0.540 | 1/4 | 18 | 19 |
| 43/64 | 0.675 | 3/8 | 18 | 19 |
| 27/32 | 0.840 | 1/2 | 14 | 14 |
| 1-3/64 | 1.050 | 3/4 | 14 | 14 |
| 1-5/16 | 1.315 | 1 | 11-1/2 | 11 |
| 1-21/32 | 1.660 | 1-1/4 | 11-1/2 | 11 |
| 1-29/32 | 1.900 | 1-1/2 | 11-1/2 | 11 |
| 2-3/8 | 2.375 | 2 | 8 | 11 |
| 2-7/8 | 2.875 | 2-1/2 | 8 | 11 |
| 3-1/2 | 3.5 | 3 | 8 | 11 |
| 4 | 4.0 | 3-1/2 | 8 | 11 |
| 4-1/2 | 4.5 | 4 | 8 | 11 |
| 5-5/8 | 5.563 | 5 | 8 | 11 |
| 6-5/8 | 6.625 | 6 | 8 | 11 |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
| Tensile Strength (ksi) | 0.2% Yield Strength (ksi) | Elongation (%) | Hardness (HRC) |
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| 90 min | 65 min | 25 min | 293 max |
Arrow Piping Solutions provides Duplex Steel Compression Tube Fittings to a wide range of industries, including:
- Textile Machinery
- Oil and Gas Industry
- Pulp and Paper Industry
- Power Plants
- Energy Industries
- Furniture
- Pharmaceutical Processing
- Modern Architecture
- Home Appliances
- Water Waste Projects
- Synthetic Fiber
- Heat Exchangers & Fluid Piping
- Dairy and Food Processing