Cast Steel Slip-On Flange

With flat welding neck flange is also called Slip - on flange or SO.
With flat welding neck flange, like plate flat welding flange is the steel pipes, pipe fittings and so on into the flange with fillet weld equipment or pipeline flange connection.
The common manufacturing standards in China are:
The national standard of the People's Republic of China
GB/T 9116-2010 with flat welding steel pipe flange neck (Hubbed slip - on - welding steel pipe flanges);
Chemical industry standard of the People's Republic of China
HG/T20592 ~ 20635-2009 in PN series (the European system) table table 8.2.2 8.2.2-1 ~ 5 According to the figure 8.2.2;
HG/T20592 ~ 20635-2009 in Class series (system) of America table table 8.2.2 8.2.1-1 ~ 6 8.2.1 according to drawing.
With flat welding neck flange
With flat welding neck flange sealing surface forms are:
Tu (RF), concave (FM), convex (M) and groove (T), groove surface (G), plane (FF).
With a flat welding neck flange size range: DN10 to 24 ")
Scope of application: PN series PN2.5 ~ PN40;The Class Class150 ~ Class1500 series
Flange material: carbon steel, no molybdenum steel, 304, 316, 304 l, 316 l, 321, 347, CF8C.
Manufacturing process: forging.
Advantages: with flat welding neck flange also belong to the welding flanges, because a short neck, so as to improve the strength of the flange improved flange bearing.So can be used in higher pressure pipeline.