Flanges provide the necessary connections to link pipelines. Faces are the mating surface of a 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.
Requirements are valid for normal case, in special case you have to contact the technical department.
Below you will find a short description and definition of each type, completed with an detailed image.
Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.
