DS DS/EN 60641-3-1
DS DSEN 60641-3-1 2008-SEP-08 Pressboard and presspaper for electrcal purposes - Part 3 Specfcatons for ndvdual materals - Sheet 1 Requrements for pressboard types B01 B03 B21 B23 B31 B33 B41 B43 B51 B53 and B61
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This International Standard gives the requirements for pressboard for electrical purposes comprised of 100% sulphate wood pulp or a mixture of sulphate wood pulp and cotton.