Super Duplex S32760 Ring Type Joint FlangeASTM A182 · ASME B16.5 · Manufacturer, stockist & exporter, India
UNS S32760 · W.Nr 1.4501 · RTJ
A Super Duplex S32760 ring type joint flange is a flange with a machined groove for a metal ring gasket, made from Super Duplex S32760 to ASTM A182 F55. RTJ flanges are used for high pressure and temperature — typically Class 600 and above, and on wellhead and API equipment. The metal ring deforms into the groove to seal.
- ASTM A182
- ASME B16.5
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is a Super Duplex S32760 Ring Type Joint Flange?
- What it is
- A flange with a machined groove for a metal ring gasket
- Material
- ASTM A182 F55
- Dimensions
- ASME B16.5 · ASME B16.20
- Grade
- Super Duplex S32760 · UNS S32760
- Best at
- Seawater firewater, injection and offshore piping
Super Duplex S32760 Ring Type Joint Flange Specification
| Product | Super Duplex S32760 Ring Type Joint Flange |
|---|---|
| Material standard | ASTM A182 F55 |
| Dimensional standard | ASME B16.5 · ASME B16.20 |
| Sizes | ½" – 24" (ASME B16.5) · 26" – 60" (ASME B16.47) |
| Pressure class | Class 150, 300, 400, 600, 900, 1500, 2500 · PN 6 – PN 100 |
| Facing | RF · FF · RTJ · tongue & groove |
| Bore | To match pipe schedule (state on order) |
| Testing | PMI · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose a Ring Type Joint Flange
RTJ flanges are used for high pressure and temperature — typically Class 600 and above, and on wellhead and API equipment. The metal ring deforms into the groove to seal.
- Groove to ASME B16.20 ring numbers
- Ring gasket softer than the groove material
- Groove hardness checked on order
Super Duplex S32760 Ring Type Joint Flange Chemical Composition
| Element | Weight % |
|---|---|
| Chromium | 24.0 – 26.0 |
| Nickel | 6.0 – 8.0 |
| Molybdenum | 3.0 – 4.0 |
| Nitrogen | 0.20 – 0.30 |
| Copper | 0.50 – 1.00 |
| Tungsten | 0.50 – 1.00 |
| Carbon | 0.030 max |
| Manganese | 1.00 max |
Super Duplex S32760 Ring Type Joint Flange Mechanical Properties
| Solution-annealed plate | Value |
|---|---|
| Tensile strength | 750 MPa · 109 ksi |
| Yield strength 0.2% | 550 MPa · 80 ksi |
| Elongation | 25% |
| Hardness | 270 HB max |
Full chemistry, properties and equivalents are on the Super Duplex S32760 grade page.
Other Super Duplex S32760 flanges
Super Duplex S32760 Ring Type Joint Flanges for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiSuper Duplex S32760 Ring Type Joint Flange dimensions — ASME B16.5 Class 150 & 300
Outside diameter, thickness and bolting are set by size and class. Values in mm; thickness excludes the 1.6 mm raised face.
| NPS | Cl 150 OD | Cl 150 thickness | Cl 150 bolt circle | Cl 150 bolts | Cl 300 OD | Cl 300 thickness | Cl 300 bolt circle | Cl 300 bolts |
|---|---|---|---|---|---|---|---|---|
| ½" | 90 | 9.6 | 60.3 | 4 × ½" | 95 | 12.7 | 66.7 | 4 × ½" |
| 1" | 110 | 12.7 | 79.4 | 4 × ½" | 125 | 15.9 | 88.9 | 4 × ⅝" |
| 1½" | 125 | 15.9 | 98.4 | 4 × ½" | 155 | 19.1 | 114.3 | 4 × ¾" |
| 2" | 150 | 17.5 | 120.7 | 4 × ⅝" | 165 | 20.7 | 127.0 | 8 × ⅝" |
| 3" | 190 | 22.3 | 152.4 | 4 × ⅝" | 210 | 27.0 | 168.3 | 8 × ¾" |
| 4" | 230 | 22.3 | 190.5 | 8 × ⅝" | 255 | 30.2 | 200.0 | 8 × ¾" |
| 6" | 280 | 23.9 | 241.3 | 8 × ¾" | 320 | 35.0 | 269.9 | 12 × ¾" |
| 8" | 345 | 27.0 | 298.5 | 8 × ¾" | 380 | 39.7 | 330.2 | 12 × ⅞" |
| 10" | 405 | 28.6 | 362.0 | 12 × ⅞" | 445 | 46.1 | 387.4 | 16 × 1" |
| 12" | 485 | 30.2 | 431.8 | 12 × ⅞" | 520 | 49.3 | 450.8 | 16 × 1⅛" |
Full chart: ASME B16.5 flange dimensions.
Super Duplex S32760 Ring Type Joint Flange — questions buyers ask
Which ring gasket goes with an RTJ flange?
Oval or octagonal rings to ASME B16.20, in a material softer than the flange groove.
Which standard covers Super Duplex S32760 ring type joint flanges?
The material is ASTM A182 F55; dimensions follow ASME B16.5 · ASME B16.20. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a Super Duplex S32760 ring type joint flange?
The alloy price, the size and pressure class, quantity, and the testing and documents required. Send your list and we quote the same working day.
Can you supply Super Duplex S32760 ring type joint flanges to NACE MR0175?
Yes. Super Duplex S32760 is listed in NACE MR0175 / ISO 15156-3 within its limits; state NACE compliance on the order and it is confirmed on the certificate.
What documents do you supply?
EN 10204 3.1 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026