Fflans y Gogledd-orllewin (Plât Flange Flange)
| Model Rhif | NW10 | NW16 | NW25 | |||||
| MATH | a | a | b | e | a | |||
| A | 30 | 30 | 30 | 30 | 30 | 40 | 40 | 40 |
| B | 12.2 | 12.2 | 17.2 | 17.2 | 17.2 | 26.2 | 26.2 | 26.2 |
| C | 10 | 10 | 16 | 17.5 | 17.5 | 25 | 23 | 24 |
| D | 14 | 13.8 | 20 | 21.7 | 21.7 | 28 | 27.2 | 27.2 |
| E | - | - | - | - | - | - | - | - |
| L | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
| Deunydd | 304 eg | 304 eg | 304 eg | 304 eg | 304 eg | 304 eg | 304 eg | 304 eg |
| Rhannau Rhif | DK0001 | DK0002 | DK0003 | DKO004 | DK0005 | DK0006 | DK0007 | DKO008 |
| Model Rhif | NW40 | NW50 | NW63 | Nw80 | ||||
| MATH | a | a | b | c | c | |||
| A | 55 | 55 | 55 | 75 | 75 | 75 | 87 | 114 |
| B | 41.2 | 41.2 | 41.2 | 52.2 | 52.2 | 52.2 | 70.2 | 83 |
| C | 40 | 37,1 | 39 | 50 | 54.9 | 57.2 | 70.2 | 83 |
| D | 44.5 | 42.7 | 42.7 | 55 | 60.5 | 60.5 | 76.3 | 89.1 |
| E | -- | -- | -- | -- | - | -- | -- | - |
| L | 40 | 40 | 40 | 40 | 40 | 40 | 20 | 20 |
| Deunydd | 304 SS | 304 SS | 304 eg | 304 SS | 304 eg | 304 SS | 304 SS | 304 SS |
| Rhannau Rhif | DK0009 | DK0010 | DK0011 | DK0012 | DKO013 | DKO014 | DK0015 | DK0016 |
| Model Rhif | NW80 | NW100 | NW125 | NW160 | NW200 | NW250 | ||
| MATH | d | b | d | d | b | d | d | d |
| A | 114 | 134 | 134 | 161 | 190 | 190 | 252 | 301 |
| 8 | 83 | 102 | 102 | 127 | 153 | 153 | 213 | 261 |
| C | 83 | 108.3 | 102 | 127 | 158.4 | 153 | 213 | 261 |
| D | -- | 114.3 | -- | - | 165.2 | -- | -- | -- |
| E | 89.8 | -- | 114.8 | 140.8 | - | 166.5 | 217.8 | 269 |
| L | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Deunydd | 304 Ss | 304 Ss | 304 eg | 304 eg | 304 Ss | 304 Ss | 304 eg | 304 eg |
| Rhannau Rhif | DK0017 | DK0018 | DK0019 | DK0020 | DK0021 | DK0022 | DK0023 | DK0024 |
