219 / | HD | ELECTRIC HEATING |
50 | DF | METAL HEATING (E.G., RESISTANCE HEATING) {19} |
78.01 | DF | .~ For bonding with pressure (e.g., resistance welding) {16} |
101 | DF | .~.~ Butt {3} |
104 | DF | .~.~.~ Methods {3} |
106 | .~.~.~.~ By use of a bridging member (e.g., splice plate) |