Section 16 Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers and parts and accessories of such articles 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof 84 68 Machinery and apparatus for soldering, brazing or welding 84 68 20 Gas-operated machinery and apparatus, for soldering, brazing... Commodity Code Description 84 68 20 00 Gas-operated machinery and apparatus, for soldering, brazing... 84 68 20 10 Hand-operated (not hand-held) gas welding or brazing appliances for metal 84 68 20 90 Other