| 219 / | HD | ELECTRIC HEATING |
|
| 50 | DF | METAL HEATING (E.G., RESISTANCE HEATING) {19} |
| 121.11 | DF | .~ By arc {16} |
| 137.2 | DF | .~.~ With consumable electrode device {4} |
| 137.31 |  | .~.~.~ Gun {7} |
| 137.41 | DF | .~.~.~.~> Having fume extractor |
| 137.42 | DF | .~.~.~.~> Having gas flow limiting shape (e.g., gas diffuser) |
| 137.43 | DF | .~.~.~.~> Having spatter shield |
| 137.44 | DF | .~.~.~.~> Having integral electrode guide {2} |
| 137.61 | DF | .~.~.~.~> Having filler electrical contact structure |
| 137.62 | DF | .~.~.~.~> Having cooling means |
| 137.63 | DF | .~.~.~.~> Having supply connection means (e.g., quick disconnect) |