SO – Slip On Flange
SO – Slip On Flange
A Slip-On Flange (SO Flange) is designed with an inner diameter slightly larger than the outside diameter of the pipe, allowing the pipe to slip into the flange before welding. The flange is then secured to the pipe using fillet welds on both the inside and outside to ensure sufficient strength and prevent leakage.
Slip-on flanges are similar to Socket Weld Flanges, but without an internal shoulder. Because of this design, welding is typically performed on both the internal and external sides of the flange connection to improve structural integrity.
Slip-on flanges are commonly used for larger pipe sizes and are generally more popular than Welding Neck Flanges due to their lower cost and shorter hub length, which requires less installation space.
Available Pressure Classes
- American Standard: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900 and CLASS 1500
- European Standard: PN 6, PN 10, PN 16, PN 25, PN 40, PN 63 and PN 100
Related products
FlangeBlind Flange
Read moreBlind flanges seal the ends of piping systems, valves, or equipment openings. They are essential for isolating pipeline sections during maintenance, inspection, or future expansion.
- Flange
Weld Neck Flange
Read moreWeld Neck Flanges feature a tapered hub that transfers stress to the pipe, minimizing stress concentration and the risk of weld cracking. Connected via a full-penetration butt weld suitable for radiographic testing (NDT), they provide exceptional structural integrity.
- Flange
Threaded Flange
Read moreThreaded Flanges feature an internal thread for connection to pipes without welding. They are ideal for low-pressure, low-temperature utilities like air and water. Since no ‘hot work’ is required, they are especially suited for highly flammable or explosive environments where welding is prohibited.
- Flange
Lap Joint Flange
Read moreLap Joint Flange must be used together with the stub end by attaching the flange to the stub end and connecting the stub end to the pipe by the Butt Weld method. pipe body This can reduce the misalignment of bolt holes and reduce the torque caused by the misalignment of the pipe.
