| 06N | U2963 | SPECIALIST HEAT EXCHANGER LTD |
| 258 | K7766 | BRITISH STANDARDS INSTITUTION |
| 42121491 | K0359 | WARTSILA WATER SYSTEMS LIMITED |
| BS1806 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1806-258 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-258 | K7766 | BRITISH STANDARDS INSTITUTION |
| C42121-6 | K0359 | WARTSILA WATER SYSTEMS LIMITED |
| DEFSTAN02-337-258-MN70 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| NES 337 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-1984 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-258-MN70 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES337-258-MN70-(N73B) | U6183 | PRECISION POLYMER ENGINEERING LIMITE |