2976| 9
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40crnimo合金鋼材料攻絲用什么油 |
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點(diǎn)評(píng)
說到點(diǎn)子上了,基本上來說lz要換個(gè)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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