Stainless Steel Slip On Flange

● Simple structure, easy to install.

● Various forms of sealing surfaces, including raised face (RF), concave face (FM), convex face (M), tongue and groove (T), groove (G) and fully flat (FF).

● Wide range of diameters, suitable for pipes from DN10 to DN600.

● Medium pressure rating for pipe systems from PN2.5 to PN40 or Class 150 to 1500.

● Socket weld connections provide high strength and sealing properties.

● They are suitable for piping systems that are subject to high pressure and temperature fluctuations.

● Typically, the sealing surface forms include a raised surface (RF), a dimpled surface (MFM), a tongue/groove (TG), and a ring joint (RJ).

The calculated strength from a Slip On flange under internal pressure is of the order of two-thirds that of Welding Neck flanges, and their life under fatigue is about one-third that of the latter.

The connection with the pipe is done with 2 fillet welds, as well at the outside as also at the inside of the flange. The X measure on the image, are approximately:

Wall thickness of pipe + 3 mm.

This space is necessary, to do not damage the flange face, during the welding process.

A disadvantage of the flange is, that principle always firstly a pipe must be welded and then just a fitting. A combination of flange and elbow or flange and tee is not possible, because named fittings have not a straight end, that complete slid in the Slip On flange.

It is widely applied in oil, gas, chemical, electric power station, shipyard, pharmacy, milk, beer, drink, water conservancy and so on.

● Connection Method:

● Slip-on Flange is connected by fillet welding.

● Socket-welding Flange is connected by socket welding.

● Application Scenario:

● Flat welding flanges are suitable for medium pressure and wide diameter pipe systems.

● Socket-welding flanges are applicable to piping systems which are subject to high pressure and temperature fluctuations.