Isu tiri vagadziri vanopa akasiyana siyana castings (grey simbi, ductile simbi, kabhoni simbi, chiwanikwa simbi, isina simbi, aruminiyamu, ndarira, nickel ndarira, nezvimwe ……)

Kazhinji iwo mazuva 1-15 kana nhumbi dziripo. kana angangoita mazuva makumi matatu nemakumi mana nemashanu kana zvinhu zvisiri mudura, zvichienderana nehuwandu.

Mari yekutumira inoenderana nenzira yaunosarudza kuwana zvinhu. Express inowanzo kuve inonyanya kukurumidza asi zvakare inodhura nzira. Nekufamba kwegungwa ndiyo mhinduro yakanakisa yemari hombe. Mitengo yekutakura chaiyo tinogona kukupa chete kana isu tichiziva iwo huwandu hwehuremu, huremu uye nzira. Ndapota taura nesu kuti uwane mamwe mashoko.