164 / | HD | METAL FOUNDING |
1 | DF | PROCESS {6} |
4.1 | DF | .~ With measuring, testing, inspecting, or condition determination {4} |
451 | DF | .~.~ Of continuous or semicontinuous casting {1} |
452 | DF | .~.~.~ And regulating an operation {3} |
454 | .~.~.~.~ Product withdrawing |