high - hydr
- high current
- high profile sow
- high surface area alumina (alumina with a high surface area, sandy alumina)
- high surface area alumina (alumina with a high surface area, sandy alumina)
- high-grade aluminum/99.7 aluminum/P1020 aluminum
- high-tension conductor
- high-tension isolating switch
- high-tension switch box
- high-voltage distribution unit
- holding capacity of the crucible
- holding furnace
- homogenizing furnace / soaking pit
- homogenizing/soaking
- hood
- hook bucket crane / bucket crane / clamshell crane / grab crane / grabbing crane
- hopper / bunker / reservoir