ANSI 300 Flange / Flange Dimensions 300
ANSI 300 Flange include slip on flange, welding neck flange, threaded flange, blind flange, etc. according to ANSI B16.5, Flange dimensions 300 is one of pressure rating of ansi b16.5, 150lb, 300lb, 600lb, 900lb, 1500lb, 2500lb.
ANSI 300 Flange /Flange Dimensions 300
| Nominal Pipe Size NPS (inches) | Class 300 | |||
| Diameter of Flange (inches) | No. of Bolts | Diameter of Bolts (inches) | Bolt Circle (inches) | |
| 1/4 | 3-3/8 | 4 | 1/2 | 2-1/4 |
| 1/2 | 3-3/4 | 4 | 1/2 | 2-5/8 |
| 3/4 | 4-5/8 | 4 | 5/8 | 3-1/4 |
| 1 | 4-7/8 | 4 | 5/8 | 3-1/2 |
| 1-1/4 | 5-1/4 | 4 | 5/8 | 3-7/8 |
| 1-1/2 | 6-1/8 | 4 | 3/4 | 4-1/2 |
| 2 | 6-1/2 | 8 | 5/8 | 5 |
| 2-1/2 | 7-1/2 | 8 | 3/4 | 5-7/8 |
| 3 | 8-1/4 | 8 | 3/4 | 6-5/8 |
| 3-1/2 | 9 | 8 | 3/4 | 7-1/4 |
| 4 | 10 | 8 | 3/4 | 7-7/8 |
| 5 | 11 | 8 | 3/4 | 9-1/4 |
| 6 | 12-1/2 | 12 | 3/4 | 10-5/8 |
| 8 | 15 | 12 | 7/8 | 13 |
| 10 | 17-1/2 | 16 | 1 | 15-1/4 |
| 12 | 20-1/2 | 16 | 1-1/8 | 17-3/4 |
| 14 | 23 | 20 | 1-1/8 | 20-1/4 |
| 16 | 25-1/2 | 20 | 1-1/4 | 22-1/2 |
| 18 | 28 | 24 | 1-1/4 | 24-3/4 |
| 20 | 30-1/2 | 24 | 1-1/4 | 27 |
| 24 | 36 | 24 | 1-1/2 | 32 |
ANSI 300 Flange /Flange Dimensions 300 of ansi b16.5 include size from 1/2 inch to 24inch (dn15 to dn600), no of bolts from 4 to 20, the actual of diameter of flange up to 32 inch.
