Duplex Steel S31803 Pipe Fittings
Arrow Piping Solutions is a leading manufacturer, supplier, and exporter of premium-grade Duplex Steel S31803 Pipe Cap, UNS S31803 45° Elbows, 2205 Duplex 90° Elbows, Duplex S31803 Buttweld Fittings, Duplex Steel UNS S31803 Reducers, and other ANSI B16.9 Duplex Steel Buttweld Pipe Fittings in India.
Our Duplex S31803 Pipe Fittings deliver high resistance to crevice corrosion and chloride corrosion. This resistance is vital for applications involving saltwater, control system water systems, marine environments, and some food processing environments. These fittings are leak-proof, gas-tight, and suitable for high-pressure and high-corrosion environments.
Product Range Includes:
- Duplex Steel S31803 Buttweld Fittings
- ASME A815 Duplex Steel S31803 Pipe Caps
- Duplex 2205 90° Elbows
- Duplex Steel UNS S31803 45° Elbows
- Duplex S31803 Reducers
- ANSI B16.9 Duplex Steel Buttweld Crosses
- Duplex Steel S31803 Seamless Pipe Fittings
- Duplex Steel 2205 Pipe Bends
- Buttweld Ends per ASME B16.25
Key Benefits:
- Exceptional resistance to chloride stress corrosion cracking, pitting, and crevice corrosion
- High mechanical strength and excellent dimensional accuracy
- Works efficiently under both reducing and oxidizing conditions
- Excellent for aggressive chemical and marine environments
- Comes with certified quality testing and complete documentation
| Specification | ASTM A815 / ASME SA815 |
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| Dimension Standards | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
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| ASME B16.9 | Factory-Made Wrought Buttwelding Fittings |
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| ASME B16.25 | Buttwelding Ends |
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| ASME B16.28 | Butt-Welded Short Radius Elbows & Returns Bends |
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| MSS SP-43 | Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications |
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| Size Range | ½" NB to 24" NB in Sch 10s, 40s, 80s, 160s, XXS. (DN6~DN100) |
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| Seamless Butt Weld Sizes | ½" - 10" |
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| Welded Butt Weld Sizes | ½" - 48" |
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| Thickness | Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS |
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| Bending Radii | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
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| Type | Seamless / Welded / Fabricated |
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| STANDARD | WERKSTOFF NR. | UNS |
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| Duplex 2205 | 1.4462 | S31803 |
Duplex 31803 Pipe Fittings offers superior stability and ductility properties in harsh and elevated temperature environments. Duplex 31803 Pipe Fittings are a cost-effective solution for numerous applications such as Seawater equipment, Gas processing, Pharmaceuticals, Chemical equipment, Heat exchangers, condensers, Petrochemicals, Power generation and Paper and Pulp industries. Our team carries out all the quality testing procedure of the products to ensure error-free fabrication. We offer proper documentation with all required certificates as per the requirements. We provide convenient shipping and suitable packing ways without compromising on the quality of products. The products are available in large quantity for urgent requirements.
| NPS | O.D. at Bevel | I.D. at End | Wall Thickness | Elbows/Tees A,B,C,M | 180° Return O | Back‑to‑Face K | Ends U | Reducers H | Caps E |
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| ½–2½" | 0.06 -0.03 | 0.03" | ≥87.5% nominal | 0.06" | 0.25" | 0.25" | 0.03" | 0.06" | 0.12" |
| 3–3½" | 0.06" | 0.06" | ≥87.5% nominal | 0.06" | 0.25" | 0.25" | 0.03" | 0.06" | 0.12" |
| 4" | 0.06" | 0.06" | ≥87.5% nominal | 0.06" | 0.25" | 0.25" | 0.03" | 0.06" | 0.12" |
| 5–8" | 0.09 -0.06 | 0.06" | ≥87.5% nominal | 0.06" | 0.25" | 0.25" | 0.03" | 0.06" | 0.25" |
| 10–18" | 0.16 -0.12 | 0.12" | ≥87.5% nominal | 0.09" | 0.38" | 0.25" | 0.06" | 0.09" | 0.25" |
| 20–24" | 0.25 -0.19 | 0.19" | ≥87.5% nominal | 0.09" | 0.38" | 0.25" | 0.06" | 0.09" | 0.25" |
| 26–30" | 0.25 -0.19 | 0.19" | ≥87.5% nominal | 0.12" | – | – | – | 0.19" | 0.38" |
| 32–48" | 0.25 -0.19 | 0.19" | ≥87.5% nominal | 0.19" | – | – | – | 0.19" | 0.38" |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
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| 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 |
| Grade | Density | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
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| S31803 | 7.805(g/cm 3) | 0.285 | 1420 – 1465 | 2588 – 2669 |
Arrow Piping Solutions’ Hastelloy C276 Pipe Fittings are widely used in:
- Textile Machinery
- Oil & Gas Industry
- Pulp & Paper Industry
- Power Plants & Energy
- Furniture & Appliances
- Pharmaceutical Processing
- Modern Architecture
- Home Appliances
- Water Treatment Projects
- Synthetic Fiber Production
- Heat Exchangers & Fluid Piping
- Dairy & Food Processing