This International Standard specifies the requirements for in-sulated pins used to pin parts in The secondary circuit ofresistance welding equipment, or other live equipment, whichreed to be insulated from each other
EN ISO 9312:1994 history
2013EN ISO 9312:2013 Resistance welding equipment - Insulated pins for use in electrode back-ups
1994EN ISO 9312:1994 Resistance Welding Equipment - Insulated Pins for Use in Electrode Back-ups (ISO 9312 : 1990)