JIS B 6901:1998 (R2013)

This Japanese Industrial Standard specifies the test methods for the effective working zone of the heat treatment furnaces of metals. As to the test methods for the effective treating zone of plasma heat treatment heating equipment, refer to the Annex 1. As to the holding temperature tolerances of heating equipment, refer to the Annex 2, and as to the judging methods on the effective working zone and effective treating zone, refer to the Annex 3.