| BS1640:PART 3 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1640:PT3.3/4"EQ.TEE.WPBSCH40 | K7766 | BRITISH STANDARDS INSTITUTION |
| QCA/BS1640:PART 3 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| QCA/BS1640:PT3.3/4"EQ.TEE.WPBSC- | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| QCA/BS1640:PT3.3/4IN.EQTEEWPBSC- | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| BS1640:PT3.3/4INEQ.TEE.WPBSCH40 | K7766 | BRITISH STANDARDS INSTITUTION |
| QCA/BS1640:PT3.3/4INEQ.TEE.WPBS- | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| QCA/BS1640PT33/4INEQTEEWPBSCH40 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |