The socket welding flange can be inserted into the pipe and then welded. The socket welding flange refers to the flange that is inserted into the flange ring step at the end of the pipe and welded at the end of the pipe and the outside. There are two types of necked and non-necked. The flange with neck tube has good rigidity, small welding deformation and good sealing performance. It can be used in the pressure of 1.0 ~ 10.0MPa. Type B flanges for containers are also socket-welded flanges and are used in applications with high sealing requirements. When designing, the socket welding flange can be checked as an integral flange.


Socket flange material:
Carbon Steel: ASTM A105, 20 #, Q235, 16Mn, ASTM A350 LF1, LF2
CL1 / CL2, LF3 CL1 / CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70;
Stainness Steel: ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti,
0Cr18Ni9Ti, 321, 18-8;
Alloy Steel: ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12,
182A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8 / Ⅲ;
Socket welding flange application: boiler and pressure vessel, petroleum, chemical, shipbuilding, pharmaceutical, metallurgy, machinery, stamping elbow food and other industries
Socket welding flange is suitable for small diameter, high pressure, high temperature pipeline connection.

Socket welding does not have a boss, and a groove is directly opened in the flange body, just like a hole in a blind flange, and then a groove is opened.
Socket welding flange: commonly used in pipelines with PN≤10.0MPa and DN≤40;