SC1 - Symbols, terminology and classifications
SC2 - Pumps, motors and integral transmissions
SC3 - Cylinders
SC4- Connectors and similar products and components
SC5 - Control products and components
SC6 - Contamination control
SC7 - Sealing devices
SC8 - Product testing
SC9 - Installations and systems
Standards directly controlled by TC 131 Secretariat