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40ZGMn合金铸钢车轮,由云南金马矿山机械厂试制,具ZL—300,ZL—350,ZL—400三种,分别与0.5～10米~3矿车配套,在国内56个矿山使用。合金铸钢车轮的使用,为我国窄轨矿车运输,
40ZGMn alloy cast steel wheels were trial-manufactured by Yunnan Jinma Mining Machinery Factory with three types of ZL-300, ZL-350 and ZL-400, respectively supporting 0.5 ~ 10m ~ 3 mine cars and 56 mines in China. The use of alloy steel wheels for our narrow-track car transport,