valtssirgestus, valtsõgvendus, valtsõgvendamine
pleki külmõgvendus (sirgestus) valtspingis (vrd rullsirgestus; venitussirgestus), the flattening of metal sheets that have been rolled in packs by passing them separately through a two-high cold mill with virtually no deformation (compare: roll straightening; stretcher straightening)
