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
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