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This Standard specifies the tab washers for round nut with specifications of 10 -200 mm.
This Standard is applicable to the determination of phosphorus content in pig iron, iron powder, carbon steel, alloy steel, high-temperature alloy, precision alloy. The measuring range is 0.001% ~ 0.05%.
This Standard is applicable to the determination of manganese content in pig iron, iron powder, carbon steel, alloy steel, high-temperature alloy, precision alloy. The measuring range is 0.010% ~ 2.00%.
This method is, at a constant temperature, to measure the time for a certain volume of liquid, which flows through a calibrated glass capillary viscometer, under gravity. The product of the capillary constant of the viscometer multiplied by the flow time, is the kinematic viscosity of the measured liquid, at that temperature. At temperature t, the kinematic viscosity is represented by the symbol vt.
This method is suitable for the determination of the water-soluble acids and alkalis of the liquid petroleum products, additives, greases, paraffin waxes, ceresin waxes, wax-containing components. The water-soluble acid or alkali in the specimen is extracted by distilled water or ethanol aqueous solution, then the color change of the extract is checked by the methyl orange or phenolphthalein indicator, respectively, or otherwise the pH of the extract is determined by a pH meter, to determine whether or not there is a water-soluble acids or alkalis.
This document provides the comprehensive list of Chinese National Standards - Category: GB/T; GBT.
This Standard specifies the terms, definitions, components, materials, grading, code, technical requirements, test methods, inspection rules, packaging, mark, transportation and storage of white Portland cement. This Standard is applicable to the production and application of white Portland cement.
This Standard specifies mixed powder sampling, test piece preparation and test methods for determining the properties of hardmetals by sintering test pieces. This Standard is applicable to the sampling and test methods of mixed powder of hardmetals.
This standard specifies the product classification, requirements, grading, test methods, inspection rules and markings, packaging, transportation and storage of furniture leather. This standard applies to all kinds of furniture leather.
This Standard specifies the raw materials that shall not be used, restricted substances and requirements, test methods, sample preparation and determination principles in rubber tyres (including inner tubes and cushion tapes). This Standard is applicable to rubber tyres (including inner tubes and cushion tapes).