牌号:40XH（20XH3A）标准：进口化学成分：（以茂腾材质书为准）
40XH（20XH3A）碳合金钢40XH（20XH3A）生产40XH（20XH3A）不锈铁40XH（20XH3A）铸造铁40XH（20XH3A）热板40XH（20XH3A）钢线40XH（20XH3A）线材40XH（20XH3A）铁线国产代替
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