4982| 6
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錐套標(biāo)準(zhǔn) |
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點評
選用市場有的標(biāo)件,也存在入廠檢驗問題。如GB/T對錐套材質(zhì)強度最低要求HT250,可有的公司供應(yīng)的是HT200
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