Duplex Pipe Fittings are used in a host of applications such as the marine industries, oil and gas industries, aerospace industry, the ship building industry and in the chemical and food processing applications. The Duplex Steel Fittings can be of different types, grades, shapes and sizes. There are different specifications and standards that cover the different aspects of different duplex pipe fittings. Naman Pipe & Tubes is a leading supplier of the pipe fittings in all standard, super and lean duplex grades.
There are Duplex Steel Buttweld Fittings which are welded during manufacture so that they could be welded to the pipes without damage but with ease. The welded joints provide and extra strength while the duplex material avoids corrosion stress to the maximum. As a Duplex Fittings manufacturer we produce and sell, bends, elbows, crosses, couplings, unions, tees and caps. Our pipe fittings are manufactured by different seam and seamless technologies and are tested according to the international standards. We supply Duplex Weld Fittings that are useful in applications that require heavy welding with maximum corrosion resistance such as in the ship building and marine applications. Our ASTM A815 Duplex Stainless Steel Pipe Fittings made according to the buttweld pipe fitting standards. Please contact us for a full product catalog and price list.
Table of contents
Duplex Pipe Fittings Sizes
Seamless Butt Weld fittings
1/2" - 24" (DN15 - DN600)
Welded Butt Weld fittings
1/2" - 48" (DN15 - DN1200)
Thickness
SCH5S to SCH160
Manufacturing Standard
ASA / ANSI / ASME B16.9
Duplex Steel Fittings Specifications
| Specifications | ASTM A815 / ASME SA 815 |
| Accordance to |
EN 10204/3.1B, ASME/ANSI B16.9, MSS-SP-43, ASME B16.28 |
| Type | Fabricated / Seamless / Welded |
| Connection | Welded, Flange, Welding, Clamp, Thread |
Different Types of Duplex Steel Buttweld Fittings
Duplex Pipe Fittings
- Elbow
- Tee
- Eccentric Reducer
- Concentric Reducer
- Lateral Tee
- Equal Tee
Duplex Steel Buttweld Fittings
- Long Stub End
- End Cap
- Equal Cross
- 45 Degree Elbow
- 90 Degree Elbow
- Long & Short Radius Elbow
Duplex Weld Fittings Price in India
| Types | INR/ kg |
|---|---|
| DSS ELBOW-90 DEGREE BUTTWELD, ASME B16.9 | INR 5,582 |
| DSS ELBOW-45 DEGREE BUTTWELD, ASME B16.9 | INR 5,545 |
| DSS REDUCER- ECCENTRIC BUTTWELD, ASME B16.9 | INR 5,575 |
Why Duplex Steel fittings are used in Oil and gas refining pipeline?
Oil and gas refineries deal with some of the corrosive and high temperature products and applications. These applications also transport expensive ingredients. There should be no leakage or breaking in the pipes or in the joints. And repairing in the middle of the process would cost a lot of downtime and operational cost. The duplex steels are some of the high temperature resistant and high hardness materials used in piping. They are strong and corrosion resistant because of the austenitic and ferritic structures in them. For these reasons, they are suitable and are used in oil and gas refineries.
Chemical Composition UNS S31803 / S32205 Buttweld 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 |
Mechanical Strength & Properties of UNS S31803 / S32205 Pipe Fittings
| Density | Melting Range | Yield Stress (0.2%Offset) | Tensile Stress | Elongation |
| 7.8 g/cm3 | 2460 °F / 1350 °C | 80000 Psi, 550 MPa | MPa - 800, Psi - 116000 | 15 % |
UNS S31803 / S32205 Fittings Equivalent Grades
| Alloy 2205 | ASTM | ASME | WERKSTOFF NR. / EN |
| UNS S31803 | ASTM A815 | SA 815 | 1.4462 |
| UNS S32205 | ASTM A815 | SA 815 | 1.4462 |