Flat welding flanges are different from socket welding flanges. Socket welding flanges are suitable for small diameter, high pressure and high temperature pipeline connections. Flat welding has a stepped sealing surface that acts as a compression gasket, and then the pipe is inserted into it for welding.
There is no boss in socket welding, and a groove is directly opened on the flange body, just like a hole is opened on a blind flange, and then a groove is opened.
Flat welding is slightly better than socket welding. Generally, flat welding flanges are commonly used and can be used anywhere.
Flange types are mainly butt welding flanges, flat welding flanges, socket welding flanges, lap flanges, threaded flanges, blind flanges, etc.
For pressures above 4.0 MPa and for flammable, explosive, and toxic media, it is best to use butt welding flanges, and butt welding flanges are used for ordinary occasions.
Can socket weld flanges also be used for high pressure?
The general situation is not selected, because it is impossible to photograph. If the penetration probe is not done, it is not possible to make up for it. Site construction, the construction unit is often welded before saying, I have not done the flaw detection.