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Flange Dimensions for DN450
Dimensional tables for PN, ANSI and BS10 DN450mm (18 Inch) flanges.
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| DIMENSION TABLES FOR 450mm (18 Inch) FLANGES | ||||||||
|---|---|---|---|---|---|---|---|---|
| BS EN 1092 | DIAMETER OF FLANGE (A) | BOLT CIRCLE DIAMETER (G) | number OF BOLTS | BOLT SIZE | DIAMETER OF HOLES (D) | DIAMETER OF RAISED FACE (C) | HEIGHT OF RAISED FACE (F) | THICKNESS (E) |
PN | ||||||||
| PN 6 | 595 | 550 | 16 | M20 | 22 | 520 | 22 | |
| PN 10 | 615 | 565 | 20 | M24 | 26 | 532 | 28 | |
| PN 16 | 640 | 585 | 20 | M27 | 30 | 550 | 40 | |
| PN 25 | 670 | 600 | 20 | M33 | 36 | 555 | 46 | |
| PN 40 | 685 | 610 | 20 | M36 | 39 | 560 | 57 | |
| PN 64 | - | - | - | - | - | - | - | |
| PN 100 | - | - | - | - | - | - | - | |
ANSI | ||||||||
| Class 125 / 150 | 25 (635) | 22 3/4 (578) | 16 | 1 1/8 (29) | 1 1/4 (32) | 21 (533) | 1/16 (2) | 1 9/16 (40) |
| Class 300 | 28 (711) | 24 3/4 (629) | 24 | 1 1/4 (32) | 1 3/8 (35) | 21 (533) | 1/16 (2) | 2 3/8 (60) |
| Class 600 | 29 1/4 (743) | 25 3/4 (654) | 20 | 1 5/8 (41) | 1 3/4 (44) | 21 (533) | 1/4 (6) | 3 1/4 (83) |
| Class 900 | 31 (787) | 27 (686) | 20 | 1 7/8 (48) | 2 (51) | 21 (533) | 1/4 (6) | 4 (102) |
| Class 1500 | 36 (914) | 30 1/2 (775) | 16 | 2 3/4 (70) | 2 7/8 (73) | 21 (533) | 1/4 (6) | 6 3/8 (162) |
BS 10 | ||||||||
| Table A | 25 1/4 (641) | 23 (584) | 12 | 7/8 (22) | 1 (25) | - | 1 1/8 (29) | |
| Table D | 25 1/4 (641) | 23 (584) | 12 | 7/8 (22) | 1 (25) | - | 1 1/8 (29) | |
| Table E | 25 1/4 (641) | 23 (584) | 16 | 7/8 (22) | 1 (25) | - | 1 3/8 (35) | |
| Table F | 26 1/2 (673) | 24 (610) | 20 | 1 1/8 (29) | 1 1/4 (32) | - | 1 7/8 (48) | |
| Table H | 26 1/2 (673) | 24 (610) | 20 | 1 1/8 (29) | 1 1/4 (32) | 21 (533) | 1/16 (2) | |
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