Neck flat welded flange full name with neck flat welded steel pipe flange, is the steel pipe, pipe fittings, etc. into the flange through the fillet weld and equipment or pipe connection flange. The neck height of flat welded flange with neck is low, which improves the stiffness and bearing capacity of the flange. Compared with the butt welding flange, the welding workload is large, the welding rod consumption is high, can not withstand high temperature and high pressure and repeated bending and temperature fluctuations, but the field installation is more convenient, and the process of weld patting and kneading can be omitted
The neck flat welded flange, like the plate flat welded flange, is also a flange that extends the steel pipe, pipe fittings, etc. into the flange and connects with the equipment or pipe through the fillet weld.
2, sealing form
The sealing surface forms of flat welded flange with neck are:
Convex surface (RF), concave surface (FM), convex surface (M), tenon surface (T), groove surface (G), full plane (FF).
Diameter range of neck flat welded flange: DN10~DN600.
3. Scope of application
PN series PN2.5~PN40; Class series Class150~Class1500;
Flange material: carbon steel, Luomolybdenum steel, 304, 316, 304L, 316L, 321, 347, CF8C.
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