American lap joint flange is used together with lap joint stub end, so the flange only takes fastening work, no welding or fluid contact. It is often used for applications that require frequent dismantling, or corrosion resistant pipeline for saving cost.
Available size (Class 150)
| Size | Flange OD O (mm) | Bolting (No. x hole) | Ref. No. |
|---|---|---|---|
| 1/2″ / DN15 / 21.3mm | 90 | 4 x 5/8″ | N6501 |
| 3/4″ / DN20 / 26.7mm | 100 | 4 x 5/8″ | N6502 |
| 1″ / DN25 / 33.4mm | 110 | 4 x 5/8″ | N6503 |
| 1-1/4″ / DN32 / 42.2mm | 115 | 4 x 5/8″ | N6504 |
| 1-1/2″ / DN40 / 48.3mm | 125 | 4 x 5/8″ | N6505 |
| 2″ / DN50 / 60.3mm | 150 | 4 x 3/4″ | N6506 |
| 2-1/2″ / DN65 / 73.0mm | 180 | 4 x 3/4″ | N6507 |
| 3″ / DN80 / 88.9mm | 190 | 4 x 3/4″ | N6308 |
| 4″ / DN100 / 114.3mm | 230 | 8 x 3/4″ | N6309 |
| 5″ / DN125 / 141.3mm | 255 | 8 x 7/8″ | N6510 |
| 6″ / DN150 / 168.3mm | 280 | 8 x 7/8″ | N6511 |
| 8″ / DN200 / 219.1mm | 345 | 8 x 7/8″ | N6512 |
| 10″ / DN250 / 273.0mm | 405 | 12 x 1″ | N6513 |
| 12″ / DN300 / 323.8mm | 485 | 12 x 1″ | N6514 |
| 14″ / DN350 / 355.6mm | 535 | 12 x 1-1/8″ | N6515 |
| 16″ / DN400 / 406.4mm | 595 | 16 x 1-1/8″ | N6516 |
| 18″ / DN450 / 457.0mm | 635 | 16 x 1-1/4″ | N6517 |
| 20″ / DN200 / 508.0mm | 700 | 20 x 1-1/4″ | N6518 |
| 24″ / DN600 / 610.0mm | 815 | 20 x 1-3/8″ | N6519 |
Available size (Class 300)
| Size | Flange OD O (mm) | Bolting (No. x hole) | Ref. No. |
|---|---|---|---|
| 1/2″ / DN15 / 21.3mm | 95 | 4 x 5/8″ | N6521 |
| 3/4″ / DN20 / 26.7mm | 115 | 4 x 3/4″ | N6522 |
| 1″ / DN25 / 33.4mm | 125 | 4 x 3/4″ | N6523 |
| 1-1/4″ / DN32 / 42.2mm | 135 | 4 x 3/4″ | N6524 |
| 1-1/2″ / DN40 / 48.3mm | 155 | 4 x 7/8″ | N6525 |
| 2″ / DN50 / 60.3mm | 165 | 8 x 3/4″ | N6526 |
| 2-1/2″ / DN65 / 73.0mm | 190 | 8 x 7/8″ | N6527 |
| 3″ / DN80 / 88.9mm | 210 | 8 x 7/8″ | N6528 |
| 4″ / DN100 / 114.3mm | 255 | 8 x 7/8″ | N6529 |
| 5″ / DN125 / 141.3mm | 280 | 8 x 7/8″ | N6530 |
| 6″ / DN150 / 168.3mm | 320 | 12 x 7/8″ | N6531 |
| 8″ / DN200 / 219.1mm | 380 | 12 x 1″ | N6532 |
| 10″ / DN250 / 273.0mm | 445 | 16 x 1-1/8″ | N6533 |
| 12″ / DN300 / 323.8mm | 520 | 16 x 1-1/4″ | N6534 |
| 14″ / DN350 / 355.6mm | 585 | 20 x 1-1/4″ | N6535 |
| 16″ / DN400 / 406.4mm | 650 | 20 x 1-3/8″ | N6536 |
| 18″ / DN450 / 457.0mm | 710 | 24 x 1-3/8″ | N6537 |
| 20″ / DN200 / 508.0mm | 775 | 24 x 1-3/8″ | N6538 |
| 24″ / DN600 / 610.0mm | 915 | 24 x 1-5/8″ | N6539 |
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