Bututun dumama don Ruwa
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Ma'aikatar Ruwa da'ira Preheating bututun dumama
Na'urar dumama bututu tana kunshe da injin nutsewa wanda ke rufe da dakin jirgin ruwa mai hana lalata.Ana amfani da wannan kashin musamman don yin rufi don hana asarar zafi a cikin tsarin kewayawa.Rashin zafi ba wai kawai rashin inganci ba ne ta fuskar amfani da makamashi amma kuma zai haifar da kuɗaɗen aiki mara amfani.
