Lo matshini usetyenziswa kakhulu kumashishini esakhiwo sensimbi njengokwakhiwa, amabhuloho, ulawulo lukamasipala, njl.
Umsebenzi ophambili kukuba i-beveling grooves, isiphelo sobuso kunye ne-web arc grooves yentsimbi emile okwe-H kunye neeflange.
Inkonzo kunye nesiqinisekiso