42 14 46
Industrial Reheat Furnaces
42 14 43
Reactor Furnaces
42 14 36
Primary Refining Furnaces
42 14 33.19
Non-Ferrous Melting Furnaces
42 14 33.16
Ferrous Melting Furnaces
42 14 33.13
Ceramics and Glass Melting Furnaces
42 14 33
Industrial Melting Furnaces
42 14 29
Industrial Heat-Treating Furnaces
42 14 26
Industrial Calcining Furnaces
42 14 23
Industrial Brazing Furnaces
42 14 19
Industrial Baking Furnaces
42 14 16
Atmosphere Generators
42 14 13
Annealing Furnaces
42 14 00
Industrial Furnaces
42 13 26
Industrial Solar Radiation Heat Exchangers
42 13 23
Industrial Gas Radiation Heat Exchangers
42 13 19
Industrial Liquid-to-Liquid Heat Exchangers
42 13 16
Industrial Liquid-to-Gas/Gas-to-Liquid Heat Exchangers
42 13 13
Industrial Gas-to-Gas Heat Exchangers
42 13 00
Industrial Heat Exchangers and Recuperators