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Fired heaters for refineries. General technical requirements
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Raw clay in the production of clay powders for drilling muds. Method of determination of beneficiation index
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Thread connections for casing, tubing, line pipe and thread gauges for them. General technical requirements
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Scaly mica. Method for the determination of sand content
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Anionic and non-ionic surface active agents. Determination of the critical micellization concentration. Method by measuring surface tension with a plate, stirrup or ring
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