ASTM A335 P22 Swivel Ring FlangeASTM A182 · ISO 27509 / project specs · Manufacturer, stockist & exporter, India
SA-335 P22 · 2¼Cr-1Mo alloy pipe · SRF
An ASTM A335 P22 swivel ring flange is a flange with a rotating ring that allows bolt holes to be aligned after welding, for use with ASTM A335 P22 pipe. ASTM A335 P22 itself is a pipe or plate specification, so the matching swivel ring flange is made to ASTM A182 F22 — which is what we supply for P22 lines. Swivel ring flanges speed up subsea and offshore tie-ins and riser connections, where rotating the whole pipe to line up bolt holes is not possible.
- ASTM A182
- ISO 27509 / project specs
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is an ASTM A335 P22 Swivel Ring Flange?
- What it is
- A flange with a rotating ring that allows bolt holes to be aligned after welding
- Material
- ASTM A182 F22
- Dimensions
- ISO 27509 / project specs
- Grade
- ASTM A335 P22
- Best at
- High-pressure steam and hydrogen service up to about 580 °C
ASTM A335 P22 Swivel Ring Flange Specification
| Product | ASTM A335 P22 Swivel Ring Flange |
|---|---|
| Material standard | ASTM A182 F22 |
| Dimensional standard | ISO 27509 / project specs |
| 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 | Chemical & mechanical per heat · NDT · impact where specified |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose a Swivel Ring Flange
Swivel ring flanges speed up subsea and offshore tie-ins and riser connections, where rotating the whole pipe to line up bolt holes is not possible.
- Hub welded to pipe; ring rotates
- Common on subsea and offshore lines
- Made to ISO 27509 / DNV or project specs
More on choosing: Swivel ring flange guide.
ASTM A335 P22 Swivel Ring Flange: Why P22 for swivel ring flanges
Swivel ring flanges speed up subsea and offshore tie-ins and riser connections, where rotating the whole pipe to line up bolt holes is not possible. In ASTM A335 P22, the choice usually comes down to the medium and temperature — the rows here are the points buyers check for this exact combination.
| Why this grade | Carbon and low-alloy flanges carry most utility, hydrocarbon and high-temperature service. ASTM A335 P22 is picked for high-pressure steam and hydrogen service up to about 580 °C. |
|---|---|
| Typical service | Power plants — High-pressure steam lines. |
| B16.5 material group | 1.10 — Group 1.10 applies to A182 F22 Class 3. Chrome-moly welds usually need PWHT; the code sets thickness exemptions. |
| Bolting | ASTM A193 B7 studs with A194 2H nuts; B16 with Gr 4 or 7 nuts where the temperature calls for it |
| Welding to carbon steel | Matching carbon or low-alloy filler is used; joints to stainless need ER309L |
| Matching filler | ER90S-B3 / E9018-B3 |
ASTM A335 P22 Swivel Ring Flange Chemical Composition
| Element | Weight % |
|---|---|
| Chromium | 1.90 – 2.60 |
| Molybdenum | 0.87 – 1.13 |
| Carbon | 0.05 – 0.15 |
| Manganese | 0.30 – 0.60 |
| Silicon | 0.50 max |
| Phosphorus | 0.025 max |
| Sulphur | 0.025 max |
ASTM A335 P22 Swivel Ring Flange Mechanical Properties
| Minimum values | Value |
|---|---|
| Tensile strength | 415 MPa · 60 ksi |
| Yield strength 0.2% | 205 MPa · 30 ksi |
| Elongation | 30% |
Full chemistry, properties and equivalents are on the ASTM A335 P22 grade page.
Other ASTM A335 P22 flanges
ASTM A335 P22 Swivel Ring Flanges for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiASTM A335 P22 Swivel Ring Flange — questions buyers ask
Where are swivel ring flanges used?
Mainly in subsea and offshore pipelines, risers and spools where alignment in place is difficult.
What pressure rating does a ASTM A335 P22 swivel ring flange have?
It depends on class and temperature. ASTM A335 P22 forgings are in ASME B16.5 material group 1.10; read your class column in that group's table at the design temperature.
Can ASTM A335 P22 swivel ring flanges be welded to carbon steel?
Yes — matching carbon or low-alloy filler is used; joints to stainless need ER309L.
Which standard covers ASTM A335 P22 swivel ring flanges?
The material is ASTM A182 F22; dimensions follow ISO 27509 / project specs. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a ASTM A335 P22 swivel ring flange?
The steel price, the size and pressure class, quantity, and the testing and documents required. Send your list and we quote the same working day.
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