ASTM D668电绝缘用硬条和硬管尺度测量标准试验方法
日期:2012-02-08 10:57
hese test methods cover the measurement of the dimensions of all rigid rods and tubes used as electrical insulation, the limitations imposed being those of the size range of the more common forms of measuring instruments used.
1.2 Where the number of tests to be made or the specifications covering the rod or tube justify its use, an accurately calibrated go-and-no-go ring gage of suitable size may be used.
1.3 This standard does not purport to address all of the safety concerns, if any, associat
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09/05 01:39