The full name of the neck flat welding flange is the English name of the neck flat welding steel pipe flange: Slip-on, referred to as SO
The neck flat welding flange, like the plate flat welding flange, is also a flange that extends steel pipes, fittings, etc. into the flange and connects it to equipment or pipelines through fillet welds.
The sealing surface forms of the neck flat welding flange are:
Raised face (RF), concave face (FM), convex face (M), tenon face (T), groove face (G), full flat face (FF).
Diameter range of neck flat welding flange: DN10~DN600
Scope of application: PN series PN2.5~PN40; Class series Class150~Class1500
Flange material: carbon steel, Luomo steel, 304, 316, 304L, 316L, 321, 347, CF8C.
Manufacturing process: forging.
Advantages: The flat welding flange with neck is also a flat welding flange, because it has a short neck, which improves the strength of the flange and improves the bearing strength of the flange. So it can be used on higher pressure pipelines.
Disadvantages: The cost is higher than that of the plate type flat welding flange, and it is easier to bump during transportation due to its shape
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