CROSS-STANDARD
Compare flange standards
The same nominal size is not the same flange. Compare outside diameter, bolt circle and bolting before assuming two flanges will mate.
DN100 · Weld Neck
Weld Neck DN100 across standards
All pressure classes for this size.
| Standard | Size notation | Rating | Outside Ø D | Thickness C | Raised face D2 | Bolt circle K | Bolting | Hub A | Length H | |
|---|---|---|---|---|---|---|---|---|---|---|
| B16.5 | 4″ | 228.6 | 22.4 | 157.2 | 190.5 | 8 × Ø19.1 | 134.9 | 74.7 | Spec sheet | |
| B16.5 | 4″ | 254 | 30.2 | 157.2 | 200.2 | 8 × Ø22.2 | 146.1 | 84.3 | Spec sheet | |
| B16.5 | 4″ | 254 | 35.1 | 157.2 | 200.2 | 8 × Ø25.4 | 146.1 | 88.9 | Spec sheet | |
| B16.5 | 4″ | 273.1 | 38.1 | 157.2 | 215.9 | 8 × Ø25.4 | 152.4 | 101.6 | Spec sheet | |
| B16.5 | 4″ | 292.1 | 44.5 | 157.2 | 235 | 8 × Ø31.8 | 158.8 | 114.3 | Spec sheet | |
| B16.5 | 4″ | 311.2 | 53.8 | 157.2 | 241.3 | 8 × Ø34.9 | 162.1 | 124 | Spec sheet | |
| B16.5 | 4″ | 355.6 | 76.2 | 157.2 | 273.1 | 8 × Ø41.3 | 165.1 | 190.5 | Spec sheet | |
| JIS B2220 | 100A | 200 | 16 | 141 | 165 | 8 × Ø19 | 128 | 41 | Spec sheet | |
| JIS B2220 | 100A | 210 | 18 | 151 | 175 | 8 × Ø19 | 130 | 45 | Spec sheet | |
| JIS B2220 | 100A | 225 | 22 | 160 | 185 | 8 × Ø23 | — | 56 | Spec sheet | |
| JIS B2220 | 100A | 225 | 24 | 160 | 185 | 8 × Ø23 | — | 58 | Spec sheet | |
| JIS B2220 | 100A | 240 | 32 | 160 | 195 | 8 × Ø25 | — | 76 | Spec sheet | |
| EN 1092-1 | DN100 | 210 | 16 | 148 | 170 | 4 × Ø18 | 130 | 45 | Spec sheet | |
| EN 1092-1 | DN100 | 220 | 20 | 158 | 180 | 8 × Ø18 | 131 | 52 | Spec sheet | |
| EN 1092-1 | DN100 | 220 | 20 | 158 | 180 | 8 × Ø18 | 131 | 52 | Spec sheet | |
| EN 1092-1 | DN100 | 235 | 24 | 162 | 190 | 8 × Ø22 | 134 | 65 | Spec sheet | |
| EN 1092-1 | DN100 | 235 | 24 | 162 | 190 | 8 × Ø22 | 134 | 65 | Spec sheet |
Do not compare DN alone. ASME B16.5, EN 1092-1 and JIS B2220 flanges of the same DN generally have different outside diameters, bolt circles and bolt counts. Even similar pressure ratings do not guarantee interchangeability. Order flange, gasket and bolting to the same standard.