Types of flange
1. Threaded Flanges
2. Socket-Weld Flanges
3. Slip-On Flanges
4. Lap Joint Flanges
5. Weld Neck Flanges
6. Blind Flanges

Flange Facing Types
1. Flat Face
2. Raised Face
3. Ring Joint
4. Tongue and groove
5. Male and Female type