The type of forged flange and sealing face for flange

The type of forged flange and sealing face for flange

Different types of flange faces are used as the contact surfaces to seat the sealing gasket material.

The type of flange The type of sealing face  Pressure Class(PN,MPA)
 Plate flange(PL) Raise Face(RF) 0.25-2.5
Flat Face( FF) 0.25-1.6
Slip on flange(SO) Raise Face(RF) 0.6-4.0
Flat Face( FF) 0.6-1.6
male and female face (MFM) 1.0-4.0
Tongue and groove face (TG) 1.0-4.0
Welding Neck Flange(WN) Raise Face(RF) 1.0-25.0
male and female face (MFM) 1.0-16.0
Tongue and groove face (TG) 1.0-16.0
 Ring Joint Face(RTJ) 6.3-25.0
Flat Face( FF) 1.0-1.6
Integral type flange(IF) Raise Face(RF) 0.6-25.0
male and female face (MFM) 1.0-16.0
Tongue and groove face (TG) 1.0-16.0
 Ring Joint Face(RTJ) 6.3-25.0
Flat Face( FF) 0.6-1.6
Socket Weld Flange(SW) Raise Face(RF) 1.0-10.0
male and female face (MFM) 1.0-10.0
Tongue and groove face (TG) 1.0-10.0
Thread Flange(Th) Raise Face(RF) 0.6-4.0
Flat Face( FF) 0.6-1.6
Lap joint Flange(LP) Raise Face(RF) 0.6-1.6
male and female face (MFM) 1.0-1.6
Tongue and groove face (TG) 1.0-1.6
Blind flange(BL) Raise Face(RF) 0.25-25.0
male and female face (MFM) 1.0-16.0
Tongue and groove face (TG) 1.0-16.0
 Ring Joint Face(RTJ) 6.3-25.0
Flat Face( FF) 0.25-1.6

Other flange facings covered by these standards include the large and small tongue-and-groove facings, and the ring joint facing specifically for ring joint type metal gaskets.


Post time: Oct-12-2020