| 220 | K7766 | BRITISH STANDARDS INSTITUTION |
| 4M3626MARK33 | K4841 | PYROPRESS ENGINEERING CO LTD |
| 5340 | K4841 | PYROPRESS ENGINEERING CO LTD |
| BS1806 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1806-220 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-220 | K7766 | BRITISH STANDARDS INSTITUTION |