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Flange Weight in KG, MM, PDF is a crucial reference for engineers, buyers, and fabricators who need accurate data for piping design, shipping calculations, or procurement planning. Knowing the exact weight of a flange by its size and type helps ensure safe handling, cost estimation, and compatibility with other piping components. Below, you’ll find detailed flange weight charts for popular flange types like Slip-On, Weld Neck, and Blind flanges in millimeters (MM) and kilograms (KG). You can download a complete PDF version of this chart at the end of the blog.
Flange Weight Chart in KG & MM
| Flange Size (NB) | Outer Diameter (MM) | Thickness (MM) | Weight (KG) |
| 15 (½”) | 95 | 12 | 1.1 |
| 20 (¾”) | 105 | 14 | 1.3 |
| 25 (1″) | 115 | 16 | 1.6 |
| 32 (1¼”) | 140 | 16 | 2.2 |
| 40 (1½”) | 145 | 18 | 2.8 |
| 50 (2″) | 160 | 20 | 3.5 |
| 65 (2½”) | 180 | 22 | 4.5 |
| 80 (3″) | 200 | 24 | 5.8 |
| 100 (4″) | 220 | 24 | 7.4 |
| 125 (5″) | 250 | 26 | 9.8 |
| 150 (6″) | 280 | 28 | 12.6 |
| 200 (8″) | 340 | 30 | 19.5 |
| 250 (10″) | 405 | 32 | 28.7 |
| 300 (12″) | 460 | 36 | 38.9 |
| 350 (14″) | 520 | 38 | 50.4 |
| 400 (16″) | 580 | 40 | 64.7 |
| 450 (18″) | 640 | 42 | 81.2 |
| 500 (20″) | 715 | 44 | 99.6 |
| 600 (24″) | 840 | 48 | 145.8 |
Extended Flange Weight Chart – Metric (MM) & Kilograms (KG)
| Nominal Bore (NB) | Outer Diameter (MM) | Thickness (MM) | Weight (KG) |
| 700 (28″) | 910 | 50 | 195.2 |
| 750 (30″) | 975 | 52 | 225.6 |
| 800 (32″) | 1040 | 56 | 260.8 |
| 850 (34″) | 1105 | 58 | 295.1 |
| 900 (36″) | 1170 | 60 | 335.7 |
| 950 (38″) | 1235 | 64 | 372.9 |
| 1000 (40″) | 1300 | 68 | 420.3 |
| 1050 (42″) | 1365 | 72 | 470.5 |
| 1100 (44″) | 1430 | 76 | 523.0 |
| 1150 (46″) | 1495 | 78 | 576.4 |
| 1200 (48″) | 1560 | 80 | 631.2 |
You can get the full collection of flange weight tables with over 100 sizes and variations in a downloadable, printer-friendly PDF format.
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