Ọ bụghị naanị nchara nchara abụghị naanị na-ezo aka n'ụdị anaghị agba nchara, kamakwa na-anọchite anya ihe karịrị 100 ofdị igwe anaghị agba nchara. Ofdị nchara nke ọ bụla nwere ezigbo arụmọrụ na ngwa ngwa. Nke mbu, a ga-azoputa nzube nke flange, ma mgbe ahu ubochi nchara gold ga-ekpebisi ike. Steels na-akpakarịghị ya bụ 304, 304l, 316, 316L, wdg ha niile nwere Chromium, Nickel na ihe ndị ọzọ. Dịka ọmụmaatụ, mgbakwunye nke Molybum nwere ike imekwu ikuku ikuku, karịchaa nguzogide ikuku nke nwere chloride.