Weld Bulkhead Union
| Series | Part No. | Tube 0D1 | D | F | L | A |
| L | MIHF/WBU/06L | 6 | 18 | 14 | 85 | 56 |
| Light 315 | MIHF/WBU/08L | 8 | 20 | 17 | 85 | 56 |
| MIHF/WBU/10L | 10 | 22 | 19 | 87 | 58 | |
| MIHF/WBU/12L | 12 | 25 | 22 | 87 | 58 | |
| MIHF/WBU/15L | 15 | 28 | 27 | 100 | 70 | |
| MIHF/WBU/18L | 18 | 32 | 32 | 101 | 69 | |
| PN 315 | MIHF/WBU/22L | 22 | 36 | 36 | 105 | 73 |
| MIHF/WBU/28L | 28 | 40 | 41 | 106 | 73 | |
| MIHF/WBU/35L | 35 | 50 | 50 | 114 | 71 | |
| MIHF/WBU/42L | 42 | 60 | 60 | 115 | 70 | |
| S | MIHF/WBU/06S | 6 | 20 | 17 | 89 | 60 |
| Heavy | MIHF/WBU/08S | 8 | 22 | 19 | 89 | 60 |
| PN 630 | MIHF/WBU/10S | 10 | 25 | 22 | 91 | 59 |
| MIHF/WBU/12S | 12 | 28 | 24 | 91 | 59 | |
| MIHF/WBU/14S | 14 | 30 | 27 | 107 | 72 | |
| PN 400 | MIHF/WBU/16S | 16 | 35 | 30 | 107 | 71 |
| MIHF/WBU/20S | 20 | 38 | 36 | 114 | 71 | |
| MIHF/WBU/25S | 25 | 45 | 46 | 120 | 72 | |
| MIHF/WBU/30S | 30 | 50 | 50 | 126 | 73 | |
| PN 315 | MIHF/WBU/38S | 38 | 60 | 60 | 133 | 72 |