Slip On Flange Overview
A Slip On Flange (SO Flange) is a flange type where the pipe is inserted into the flange bore and then fillet welded both inside and outside. Due to easy installation and lower cost, slip on flanges are among the most commonly used flanges in medium-low pressure piping systems.
Main Advantages
- Lower Cost: 30-50 percent cheaper than weld neck flanges
- Easy Installation: Pipe insertion and welding with easy alignment
- Versatile: Suitable for various pipe materials and sizes
- Easy Replacement: Convenient to cut and replace when damaged
Limitations
- Lower strength than weld neck flanges
- Not suitable for high pressure applications
- Fillet welds have lower fatigue strength
Typical Applications
- Low pressure steam systems
- Cooling water pipelines
- Compressed air systems
- General industrial water piping
- Non-critical process lines
标准
ASME B16.5, EN 1092-1, GB/T 9119, JIS B2220
Pressure Classes: Class 150, 300 or PN6, PN10, PN16, PN25
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