Njodzi dzezvakatipoteredza dzejecha foundries Sand foundry ichakonzera njodzi dzakasiyana-siyana kune zvakatipoteredza mukugadzirwa kwekugadzira, kunyanya kusanganisira: 1. Kusvibiswa kwemhepo: Kukanda kwemhepo kunobudisa huwandu hwakawanda hweguruva uye magasi anokuvadza, akadai se carbon monoxide, nitrogen oxide, sulfide, nezvimwewo, thes...
Verenga zvimwe