| 228 / | HD | METAL FUSION BONDING |
| 101 | DF | PROCESS {38} |
| 203 | DF | .~ With pretreating other than heating or cooling of work part of filler prior to bonding and any application of filler {4} |
| 205 | DF | .~.~ Cleaning {1} |
| 206 | ![]() | .~.~.~ Chemical {1} |
| 207 | DF | .~.~.~.~> Applying flux |