General Pipe Flange Standards
- Flange - ASME B16.36, Orifice Flange (1/2"-24")
- Slip-on Flange: Class 300, Class 400, Class 600, Class 900, Class 1500
- Threaded Flange: Class 300, Class 400, Class 600, Class 900, Class 1500
- Weld Neck Flange: Class 300, Class 400, Class 600, Class 900, Class 1500, Class 2500
- Flange - Industry Standard Flange (also called Large Diameter Flange) (26"-larger)
- Industry Standard Flanges have no national standard code or are they covered by any governing body.
- Blind Flange: Class 75, Class 125, Class 175, Class 250, Class 350
- Weld Neck Flange: Class 75, Class 125LW, Class 125, Class 175, Class 250, Class 350
- Slip-on Flange: Class 75, Class 125LW, Class 125, Class 175, Class 250, Class 350
- Industry Standard Flanges have no national standard code or are they covered by any governing body.
- Flange - AWWA Standard Flange
- AWWA C207
- Steel Ring Flange: Class B, Class D, Class E, Class F
- Steel Hub Flange: Class D, Class E
- Blind Flange: Class B, Class D, Class E, Class F
- AWWA C207
- Steel Ring Flange: Class B, Class D, Class E, Class F
- Steel Hub Flange: Class D, Class E
- Blind Flange: Class B, Class D, Class E, Class F
- AWWA C207
Tags: Pipe Flange Standards