DN50 SCH 160 CL150 A105N RF Welding Neck Flange Galvanized
A105N RF Welding Neck Flange, Forged, DN50, SCH 160, CL150, Galvanized, Pipe Connection.
Neck butt welding flange is a flange with conical neck and butt welding with cylinder or pipe. It belongs to integral flange. [1]
Because of the transition structure of cone neck and butt welding connection, the strength and stiffness of flange are strengthened, and the sealing property is better than that of flat welding flange. The disadvantage is to use forgings to manufacture, cost more materials, manufacturing costs. Suitable for high pressure, temperature or sealing requirements.
| flange | Standard Number | sealing face | Pressure rating PN,MPa |
Valve matching flange | ||
| type | code name | form | code name | |||
| Neck Flat welding |
SO | HG/t20592-2009 GB/T9116-2010 |
Facade | RF | PN6-PN160 | The flat welding flange with the neck of the protruding face is introduced in recent years Structures commonly used in petrochemical installations |
| roughness |
MFM |
1～40 |
||||
| tongue and groove face |
TG |
1.0～4.0 |
||||
| Full plane |
FF |
0.6～1.6 |
||||
| Neck butt welding |
WN |
HG/T20592-2009, JB/T82-94, GH/T9115-2010 |
Facade |
RF |
PN10-PN250 | PN4.0-PN10.0MPa valves are usually fitted A tube flange with a convex surface, such as Z41H-40, J41H-64,H44H-100,160 pressure For the above, choose the ring connection surface, such as J41H- surface 160 face butt welding flanges may also be used For clamped butterfly valves and check valves. |
| roughness |
MFM |
1.0～16.0 | ||||
| tongue and groove face |
TG |
1.0～16.0 |
||||
| Link surface |
RJ |
6.3～25.0 |
||||
| Full plane | FF | 1.0～1.6 |
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