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BS 679:1959被替代
Specification for filters for use during welding and similar industrial operations
出版：British Standards Institution
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基本信息
標(biāo)準(zhǔn)編號(hào)： BS 679:1959
發(fā)布時(shí)間：1959/12/10 0:00:00
標(biāo)準(zhǔn)類別：Standard
出版單位：British Standards Institution
標(biāo)準(zhǔn)頁數(shù)：20
標(biāo)準(zhǔn)簡(jiǎn)介
Classifies filters into shades according to visual density, recommends shades for various industrial uses. Visual density, protection against ultra-violet radiation, total-heat protection, antiglare protection, refractive properties, freedom from optical imperfections, uniformity of density, permanence, quality of cover glasses, colour grading , and (for plastics filters) flammability tests.
標(biāo)準(zhǔn)備注
? British Standards Institution 2013
Replaces notes:
Replaces BS 679:1947.
Amendment notes:
AMD 2209
AMD 316
PD 3995
PD 4281
PD 5076
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