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... 84 68 20 00 Gas-operated machinery and apparatus, for soldering, brazing... Commodity Code Description 84 68 20 00 00 Gas-operated machinery and apparatus, for soldering, brazing...