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Super Duplex Steel Tube Fittings are designed for demanding environments where strength and corrosion resistance are critical. Manufactured from advanced duplex stainless steel alloys, these fittings combine high mechanical strength with excellent resistance to corrosion, especially in aggressive and chloride-rich conditions. Their balanced microstructure makes them highly reliable for long-term service in harsh industrial applications. Super Duplex Steel Tube Fittings are trusted for their durability, pressure-handling capability, and secure performance, making them a preferred choice in industries where safety, efficiency, and reliability cannot be compromised.
Super Duplex Steel Tube Fittings are produced from alloys containing a balanced mix of austenitic and ferritic phases. This composition provides high tensile and yield strength, excellent fatigue resistance, and outstanding resistance to pitting and stress corrosion cracking. These fittings can withstand high pressure and temperature fluctuations without deformation. Their strong mechanical properties allow thinner wall designs while maintaining performance, resulting in durable, lightweight, and efficient fittings suitable for demanding operating conditions.
| Specifications | ASTM A276 ASME SA 479 |
| Size | 6mm to 38mm to 1/4″ to 1 1/2″ |
| Thread | NPT, BSP, BSPT, UNF, ISO, SAE etc. |
| Standards | ASTM B16 ASTM B 453 |
|
OD |
OD Actual |
Thread Designation – Nominal Size |
Thread per inch |
|
|
(fraction inch) |
(inches) |
(inches) |
NPT |
BSP |
|
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 |
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Super Duplex Steel Tube Fittings are widely used in industries operating under extreme conditions. They are commonly applied in oil and gas production, offshore platforms, desalination plants, chemical processing, and marine systems. Their superior resistance to seawater and corrosive chemicals makes them ideal for heat exchangers, hydraulic systems, and high-pressure pipelines. These fittings are also used in power plants and pulp and paper industries. Their long service life and low maintenance needs make them a reliable solution for critical applications.
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