Industrial machinery, cua sov thiab cua txias tshuab, tshuab cuab yeej.
Feem ntau yog siv rau hauv qhov chaw qhuav, ntub dej thiab ntub dej (nrog rau cov dej-roj sib tov), tab sis tsis yog siv rau sab nraum zoov.
Rau kev txhim kho ruaj khov nyob rau hauv nruab nrab cov neeg kho tshuab load, thiab cov ntawv thov nrog qee zaus flexing ntawm dawb, tsis tas yuav rov ua dua tshiab yam tsis muaj tensile load lossis kev qhia yuam kev.