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Carbon Steel Swivel Ring Flanges
Carbon Steel Swivel Ring Flanges Manufacturer and Supplier in India
Carbon Steel Swivel Ring Flanges are specially made flanges that come in two-piece form to aid in aligning the connections in tough piping installation projects. In this type of flanges, the weld neck part of the flange is joined together with the swivel outer part to enable the pattern of the bolt holes to be adjusted without having to rotate the pipe or the spool that is connected. This becomes useful in cases involving offshore, subsea, and pipeline tie-ins. Based on customer requirements, there are available various grades of carbon steel such as ASTM A105 and high yield ASTM A694 F52, with RF and RTJ facing and Pressure Classes based on the project. Solitaire Overseas is a reliable Carbon Steel Swivel Ring Flanges Manufacturer and Supplier in India, offering engineered solutions with required inspection and material documentation.
Technical Data
Specifications of Carbon Steel Swivel Ring Flanges
| Parameter / Feature | Specification Details |
|---|---|
Material Specifications |
ASTM A182, B564, A105, A350, A694, B381 |
Manufacturing Standards |
ANSI, ASME, BS, DIN, EN, etc. |
Pressure Ratings / Classes |
Class 150#, 300#, 600#, 900#, 1500#, 2500# | PN6, PN10, PN16, PN25, PN40, PN64, etc. |
Dimensional Standards |
ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS 4504, BS 10, EN 1092, DIN, etc. |
Size Range |
½″ (15 NB) to 48″ (1200 NB) |
Form / Construction |
Circle, Square, Plate, Ring, Flat |
Flange Face Types |
Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
Carbon Steel Grades |
ASTM / ASME A/SA 105, ASTM / ASME A350, ASTM A181 LF2, A516 Gr. 70, A36, ASTM A694 (F42, F46, F52, F60, F65, F70) |
Low-Temp Carbon Steel Grades |
ASTM A350 (LF2, LF3) |
Carbon Steel Swivel Ring Flanges Chemical Compositions
| Element | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) |
|---|---|---|---|---|---|
Composition (%) |
0.35 max |
0.60 – 1.05 |
0.035 max |
0.040 max |
0.10 – 0.35 |
Mechanical Properties of Carbon Steel Swivel Ring Flanges
| Material Grade | Tensile Strength, min | Yield Strength (0.2% Offset), min | Elongation (in 2″ / 50mm), min | Reduction of Area, min | Hardness (Brinell), max |
|---|---|---|---|---|---|
ASTM A105 / A350 LF2 CL1 |
70 ksi [485 MPa] |
36 ksi [250 MPa] |
22% |
30% |
187 HBW |
ASTM A694 F52 |
66 ksi [455 MPa] |
52 ksi [360 MPa] |
20% |
35% |
217 HBW |
Different Types of Carbon Steel Swivel Ring Flanges
Weld Neck Swivel Ring Flanges
Slip-On Swivel Ring Flanges
 Swivel Ring Flanges.webp)
RTJ (Ring Type Joint) Swivel Ring Flanges
 Swivel Ring Flanges.webp)
RF (Raised Face) Swivel Ring Flanges
 Swivel Ring Flanges.webp)
FF (Flat Face) Swivel Ring Flanges
Blind Swivel Ring Flanges
Applications and Industrial Uses of Carbon Steel Swivel Ring Flanges
- Offshore Oil & Gas Platforms
- Subsea Piping Systems
- Offshore Pipeline Tie-Ins
- Oil Refineries
- Petrochemical Plants
- Natural Gas Processing Plants
- Marine Piping Systems
- High-Pressure Process Piping Systems
Frequently Asked Questions
Carbon Steel Swivel Ring Flanges are two-piece flange assemblies with a forged hub and a rotating outer ring that helps align bolt holes during pipe connection.
The outer ring rotates independently around the fixed welding hub, allowing the bolt holes to be aligned without rotating the connected pipe or equipment.
They are used to simplify flange alignment and installation, especially where pipe movement or bolt-hole alignment is difficult.
A Swivel Ring Flange has a rotating bolt ring, while a standard Weld Neck Flange has a fixed bolt-hole pattern attached to the forged hub.
A Swivel Ring Flange uses a rotating ring with a dedicated forged hub, whereas a Lap Joint Flange uses a loose backing flange over a lap-joint stub end.
Yes. They are widely used in offshore and subsea applications because their rotating ring makes bolt-hole alignment easier during installation.