Perforated hlau yog ib daim ntawv hlau uas tau raug stamped, fabricated, los yog xuas nrig ntaus los tsim ib tug qauv ntawm lub qhov, qhov, thiab ntau yam zoo nkauj duab. Ntau hom hlau yog siv rau hauv cov txheej txheem hlau perforating, uas suav nrog steel, aluminium, stainless hlau, tooj liab, thiab titanium. Txawm hais tias tus txheej txheem ntawm perforating txhim kho cov tsos ntawm cov hlau, nws muaj lwm yam txiaj ntsig zoo xws li kev tiv thaiv thiab kev tawm suab nrov.

Cov hom hlau xaiv rau cov txheej txheem perforation nyob ntawm lawv qhov loj me, ntsuas qhov tuab, hom khoom, thiab lawv yuav siv li cas. Muaj qee qhov kev txwv rau cov duab uas tuaj yeem siv tau thiab suav nrog lub qhov puag ncig, squares, slotted, thiab hexagonal, rau npe ob peb.