GB/T 30839.31-2104 Energy consumption classification of industrial electric heating installations Part 31: Intermediate frequency centerless induction furnace (English Version)
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 30839.31-2104
GB/T 30839.31-2104 history
2014GB/T 30839.31-2104 Energy consumption classification of industrial electric heating installations Part 31: Intermediate frequency centerless induction furnace
2014GB/T 30839.31-2014 Energy consumption grading for industrial electroheat installations.Part 31:Medium frequency coreless induction furnaces