3034| 9
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40crnimo合金鋼材料攻絲用什么油 |
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點評
說到點子上了,,基本上來說lz要換個好的絲錐了,。我們公司也是42CrMoNi,用的艾莫克的絲錐,。省事多了,。絲錐不行,用進(jìn)口攻絲油都白搭,。
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