"–Bolts," CNS Standards List |
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CNS 4487
2017 Edition Method of test for surface discontinuities –Bolts, screws and studs for general requirements 螺釘表面瑕疵檢驗法 |
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CNS 4487
2003 Edition Method of test for surface discontinuities –Bolts, screws and studs for general requirements 螺釘表面瑕疵檢驗法 |
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