Mu ihame rya kijyambere ryogukora ibyuma byitwa manhole ductile, turashobora guhimba ibyuma byimyanda binyuze mubyuma bikozwe mubyuma ndetse nicyuma gihimbano, gikoreshwa cyane mubikorwa byubukanishi muri iki gihe.Mubyukuri, ihame ryibyuma byangiza ni ukubona grafite ifite ishusho imwe nu mupira unyuze mu nzira ya spheroidisation, itezimbere neza imikorere yicyuma, cyane cyane plastike nubukomere, bikavamo ubuziranenge burenze karubone ...
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