Home > Duplex Steel > Duplex Steel S31803 Tube Fittings
Chanathip Nickel Alloys & Plates, located in Bangkok, Thailand, manufactures high-quality Duplex Steel S31803 tube fittings for demanding applications. Our offerings include union fittings, elbows, tees, adapters, and instrumentation connectors designed for seamless tube systems under high pressure. S31803 tube fittings comply with international standards such as ASTM A789, A790, and ASME SA213. We precisely machine, heat-treat, and quality-test these fittings to ensure top performance in corrosive and high-stress environments. They are extensively used in oil refineries, marine installations, chemical processing plants, and water treatment facilities in Thailand and other markets.
| ASTM A815 WPS S31803 Pipe Fittings Standard Dimensions | ASME/ ANSI B16.9, ASME B16.28, MSS-SP-43, BS1560, BS4504, BS10 ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799 |
|---|---|
| Specifications | ASTM A815 / ASME SA815 |
| Duplex Steel S31803 Elbow | Angle : 22.5 deg, 30deg, 45 deg, 90 deg, 180 deg, 1.0D, 1.5D, 2.0D, 2.5D, 3D, 4D, 5D, 6D, 7D-40D. Standard: ASME B16.9, ASME B16.28, ASME B16.25, MSS SP-75 DIN2605 JISB2311 JISB2312 JISB2313, BS, GB, ISO |
| A815 WPS S31803 Pipe Fittings Thickness | SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75 |
| ASTM A815 WPS 31803 Pipe fittings Thread | NPT, BSPT, BSPP |
| Duplex Steel S31803 Forged Fittings Types | Seamless / Welded / ERW / Fabricated UNS S31803 DSS Pipe Fittings |
| C | N | P | Si | Mn | Mo | Fe | Cr | S | Ni |
|---|---|---|---|---|---|---|---|---|---|
| 1.0 | 0.03 | 0.02 | 2.0 | 3.0 – 3.5 | 22.0 – 23.0 | 0.03 | 4.5 – 6.5 | 0.14 – 0.2 | Bal |
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
|---|---|---|---|---|
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
At Chanathip Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803Tube Fittings in Bangkok, Thailand, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Thailand, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
S31803 Duplex tube fittings are widely used in hydraulic and instrumentation systems across multiple industries. They are suitable for applications like chemical dosing lines, heat exchangers, seawater piping systems, and fire protection systems on marine and offshore platforms. Their resistance to localized corrosion and stress cracking makes them ideal for harsh chemical environments, particularly those with chlorides and other corrosive elements. These fittings ensure leak-free connections in compact tubing systems that require high performance, durability, and long service life. They help minimize downtime and improve reliability in critical applications.
