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This Standard specifies the definitions, sizes, appearance, technical requirements, test methods, acceptance rules, as well as packaging, marking, quality certificate, etc. of the atmospheric corrosion resisting steel for welded structure. This Standard applies to the hot-rolled steel with atmospheric corrosion resistance for bridges, buildings and other structural members, including steel plates, steel strips and shaped steel, with a thickness of up to 100mm.
This standard specifies the method for determination of coliform bacteria in tea sets in public places. This standard applies to the determination of coliform bacteria in public tea sets in public places.
This document provides the comprehensive list of Chinese National Standards - Category: GB/T; GBT.
This Part of GB/T 20671 specifies the principle, instruments and apparatuses, test samples, test procedures, test reports and precision of the method for determining the degree of influence on the physical properties of nonmetallic gasket materials after immersion in the test liquid. This Part applies to the determination of the liquid resistance of Type 1, Type 2, Type 3 and Type 7 materials which are described in GB/T 20671.1-2020.
This standard specifies the product classification, requirements, test methods, inspection rules and markings, packaging, transportation, storage of agricultural flexible PVC calendering and stentering film.
This Standard specifies the method of determining dirt for paper and board. This Standard is applicable to the determination of dirt for various types of paper and board.
This Standard stipulates the method of adopting single test piece brittleness temperature testing machine to test vulcanized rubber brittleness temperature and judging whether vulcanized rubber is failed after being impacted at a stipulated temperature. The method includes two procedures: Procedure A is applicable to the test of brittleness temperature; Procedure B is applicable to the judgment of whether fail is caused after the impact at a stipulated temperature.
This Standard specifies sesame.
This Standard stipulates two methods for the determination of luminous transmittance and haze of transparent plastics. Method A is haze meter method. Method B is spectrophotometry. This Standard is applicable to the determination of luminous transmittance and haze of transparent plastics in plate, sheet and thin-film state.
This Standard specifies the requirements, inspection methods, inspection rules, packaging, marking, storage and transportation of CR1211, CR1212, CR1213 in CR121 series and CR1221, CR1222, CR1223 in CR122 series of the sulfurregulated chloroprene rubber.