Russian standards
Explosive atmospheres. Part 29-2. Gas detectors. Selection, installation, use and maintenance of detectors for flammable gases and oxygen
Document status: Active
Explosive atmospheres. Part 20-1. Material characteristics for gas and vapour. Classification. Test methods and data
Document status: Active
Step motors. General specifications
Document status: Replaced by GOST IEC/TS 60034-20-1-2013