British Flange Standards
BSEN1092 PN63 flange specifications cover nominal pipe sizes from 50mm (2") to 400mm (16") with additional sizes available up to 1200mm. The table includes flange outside diameters ranging from 180mm to 670mm, with thicknesses from 26mm to 80mm. Available in plate slip-on, blind, weld neck, and bossed configurations, with pitch circle diameters from 135mm to 585mm. Bolt hole diameters range from 22mm to 42mm, with 4 to 16 bolt holes depending on size.
| PN 63 | FLANGE THICKNESS | LTB | DRILLING DATA | PN 63 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOMINAL PIPE SIZE | FLANGE OUTSIDE DIAMETER | THICKNESS OF FLANGE | THICKNESS OF BLIND | THICKNESS OF W/N & BOSSEDS SOW | BOSSED LENGTH | WELD NECK LENGTH | PITCH CIRCLE DIAMETER | BOLT HOLE DIAMETER | NUMBER OF BOLT HOLES | NOMINAL PIPE SIZE | ||
| MM | INCH | C | T | T1 | T2 | L | L1 | PCD | # | H | MM | INCH |
| USE | PN100 | FOR | SIZES | BELOW | 50MM | |||||||
| 50 | 2 | 180 | 26 | 26 | 26 | 38 | 62 | 135 | 22 | 4 | 50 | 2 |
| 65 | 2 1/2 | 205 | 26 | 26 | 26 | 40 | 68 | 160 | 22 | 8 | 65 | 2 1/2 |
| 80 | 3 | 215 | 30 | 28 | 28 | 44 | 72 | 170 | 22 | 8 | 80 | 3 |
| 100 | 4 | 250 | 32 | 30 | 30 | 52 | 78 | 200 | 26 | 8 | 100 | 4 |
| 125 | 5 | 295 | 34 | 34 | 34 | 56 | 88 | 240 | 30 | 8 | 125 | 5 |
| 150 | 6 | 345 | 36 | 36 | 36 | 60 | 95 | 280 | 33 | 8 | 150 | 6 |
| 200 | 8 | 415 | 48 | 42 | 42 | N/A | 110 | 345 | 36 | 12 | 200 | 8 |
| 250 | 10 | 470 | 55 | 46 | 46 | N/A | 125 | 400 | 36 | 12 | 250 | 10 |
| 300 | 12 | 530 | 65 | 52 | 52 | N/A | 140 | 460 | 36 | 16 | 300 | 12 |
| 350 | 14 | 600 | 72 | 56 | 56 | N/A | 150 | 525 | 39 | 16 | 350 | 14 |
| 400 | 16 | 670 | 80 | 60 | 60 | N/A | 160 | 585 | 42 | 16 | 400 | 16 |
NOTES:
(1) Further sizes are available from 500NB to 1200NB
