Schematic — drawn from the table, not to scale for inspection.
| Symbol | Item | Value |
|---|---|---|
| D | Outside diameter | 250mm |
| C | Flange thickness / blind thickness | 22mm |
| D2 | Raised face diameter | 188mm |
| f | Raised face height | 2mm |
| K | Bolt circle diameter | 210mm |
| n | Number of bolt holes | 8pcs |
| d | Bolt hole diameter | 18mm |
| A | Hub diameter | 156mm |
| H | Hub length / overall length | 55mm |
| B | Welding-end diameter | 139.7mm |
| — | Approximate weight | 6.3kg |
Source: Tables G.2 to G.13 (pp. 113–124) — group 3E0 / P245GH (1.0352), vR ≤ 50 mm, all PN; Group 3E0.
Base material: P250GH / S235JR (Europe, UK, Middle East, Africa, CIS projects)
Rating: EN 1092-1 uses PN (nominal pressure) ratings in bar: PN6, PN10, PN16, PN25 and PN40. PN16 means 16 bar nominal at ambient temperature for EN material group 1, derating with temperature per the EN 1092-1 tables. EN PN ratings are not equivalent to AS…
Tolerances / marking: Tolerances, material groups and marking: EN 1092-1:2018, including Annex G.