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Slip On Stainless Steel Pipe Flanges ASTM A182 For Marine
A stainless steel slip-on flange is a type of pipe flange that slides over the end of a pipe and is then welded in place. It is designed to fit the pipe's outer diameter and provides a smooth transition from the pipe to the flanged connection.
Stainless steel slip-on flanges have a circular shape with a flat sealing surface and bolt holes around the periphery. They typically have a raised face on the sealing surface to provide a better seal when used with a gasket. The flange is slipped onto the pipe, and the backside is then welded to secure it in place.
Slip on flange also simplified as SO flange. SO flanges slip over pipes and are designed to bit slightly bigger on the inside than the pipe. They connect to the pipe through a fillet weld at the flange top and bottom. It is used to insert the pipe into the inner hole of flange, as the flange inner diameter is little bigger than the pipe’s outer diameter, pipe and flange could be connected by lap welding at the top and bottom of the flange.
Product Information
| Product Name | Stainless Steel Slip On Flange |
| Size Range | 1/2’ to 24” |
| Pressure Class | 150, 300, 400, 600, 900, 1500 |
| Standards | ASTM A182 |
| Face Type | Weld Neck (WN), Long Weld Neck (LWN), Reducing Weld Neck |
| Dimensions | ANSI B16.5, Custom Drawings |
| Thickness | Sch5S to Sch160, XXS |
| Origin | China |
| Applications | Marine, pumping, chemical production, food industry, irrigation |
| Test | Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, Ultrasonic flaw detector, Magnetic particle detector |
| Test Certificates | Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report |
Advantages of the Slip On Flange
· Installation costs are lower
· Less time is spent on accurately cutting the pipe
· Easier alignment
· Low hub on slip-on flanges due to pipe slips in the flange
· Interior and outer welding of flange
· Leak prevention
Slip On Flange vs Weld Neck Flange
Slip On flange (SO flanges) are typically cheaper than Weld-Beck Flanges, which is why many customers tend to choose them. It is one of the common used flange for the low pressure, medium temperature pipeline systems.
On the other hand, as the flange bore is bigger than pipeline diameter, it usually requires more welding work than the other flanges, moreover as the durability is not expected as longer as Welding Neck Flange, so all these factors shall be considered before choose a slip on flange.