Reference	Title	Category
ISO/TC 17/SC 3	Steels for structural purposes	A
ISO/TC 17/SC 10	Steel for pressure purposes	A
ISO/TC 17/SC 17	Steel wire rod and wire products	A
ISO/TC 44	Welding and allied processes	A
ISO/TC 44/SC 3	Welding consumables	A
ISO/TC 44/SC 5	Testing and inspection of welds	A
ISO/TC 44/SC 6	Resistance welding and allied mechanical joining	A
ISO/TC 44/SC 7	Representation and terms	A
ISO/TC 44/SC 8	Equipment for gas welding, cutting and allied processes	A
ISO/TC 44/SC 9	Health and safety	A
ISO/TC 44/SC 10	Quality management in the field of welding	A
ISO/TC 44/SC 11	Qualification requirements for welding and allied processes personnel	A
ISO/TC 44/SC 12	Soldering materials	A
ISO/TC 135	Non-destructive testing	A
ISO/TC 135/SC 3	Ultrasonic testing	A

Notes

Liaisons A: Organizations that make an effective contribution to the work of the technical committee or subcommittee for questions dealt with by this technical committee or subcommittee. 
Liaisons B: Organizations that have indicated a wish to be kept informed of the work of the technical committee or subcommittee. 
Liaisons C: Organizations that make a technical contribution to and participate actively in the work of a working group.