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Petroleum and natural gas industries. Downhole equipment. Subsurface safety valve equipment. General technical requirements
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Concentrated kaolin. Method for determination of manganese oxide (II)
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Hydrochloric acid for industrial use. Determination of iron content 2,2`-bipyridyl spectrophotometric method
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Drill pipes and other elements of drilling equipment for petroleum and natural gas industries. Part 2. Basic parameters and inspection of thread shouldered connection. General technical requirements
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Talc and talcomagnesite. Method for determination of arsenic
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