GB/T 31931-2015 standards english version

NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA

GB/T 31931-2015

Zinc or zinc alloy coating on steel sheets or strips—Determination of hexavalent chromium content—1,5-Diphenylcarbohydrazide (diphenylcarbazide) spectrophotometric method

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The Standardization Administration of the People's Republic of China

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GB Standard Code	GB/T 31931-2015
Standard Category	China National Standards
GB Standard English Title	Zinc or zinc alloy coating on steel sheets or strips—Determination of hexavalent chromium content—1,5-Diphenylcarbohydrazide (diphenylcarbazide) spectrophotometric method
GB Standard Chinese Title	钢板及钢带锌及锌合金镀层中六价铬含量的测定二苯碳酰二肼分光光度法
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