Socket welding
steel flange is suitable for small diameter, high pressure, and high-temperature pipeline connection.
Flat welding has a boss-like butt welding, a groove is opened on the boss, and then the pipe is inserted into it for welding.
Socket welding means that there is no boss, 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.
