Introduction to the type of flange
Introduction to the type of flange
- Clicks: 1261 Release time: 2011/6/1
Main: sanitary grade valves, sanitary fittings, sanitary pumps, stainless steel fittings, sanitary joints, stainless steel butterfly valves
The flange is a flanged part. The flanges can be separate, called flanges, or they can be combined, such as flanges for valves, to facilitate the installation of bolts. This article describes the material of the flange, the form of the sealing surface and the type of flange according to national standards and chemical, petrochemical and mechanical standards.
| Material | |||
| 20# | A105 | Q235A | 12Cr1MoV |
| 16MnR | 15CrMo | 18-8 | 321 |
| 304 | 304L | 316 | 316L |
| Sealing surface form | |||
| Plane (FF) | Facet (RF) | Convex (M) | Concave surface (F) |
| Concave surface (MF) | Face (T) | Groove surface (G) | Grooved surface (TG) |
| Ring connection surface (RJ) | |||
| Divided according to national standards | |||
| Integral flange | Threaded flange | Butt welding flange | Neck flat welding flange |
| Neck socket weld flange | Butt weld ring with neck loose flange | Plate flat welding flange | Butt ring plate loose flange |
| Flat welded ring plate loose flange | Flange ring plate loose flange | Flange cover | |
| Divided into chemical industry standards | |||
| Integral flange (IF) | Threaded flange (Th) | Plate type flat welding flange (PL) | With butt weld flange (WN) |
| Neck flat welding flange (SO) | Socket weld flange (SW) | Butt ring loose flange (PJ/SE) | Flat welding ring loose flange (PJ/RJ) |
| Lining flange cover (BL(S)) | Flange cover (BL) | ||
| Divided into petrochemical industry standards | |||
| Threaded flange (PT) | Butt weld flange (WN) | Flat welding flange (SO) | Socket weld flange (SW) |
| Loose flange (LJ) | Flange cover (not shown) | ||
| Divided into mechanical industry standards | |||
| Integral flange | Butt welding flange | Plate flat welding flange | Butt ring plate loose flange |
| Flat welded ring plate loose flange | Flange ring plate loose flange | Flange cover |
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