Current Category: CN-GB - National standards
This standard specifies the test method for the fineness of graphite products. This standard is applicable to the fineness test of flake graphite and microcrystalline graphite products with a size range of 38 μm to 500 μm.
This standard specifies the analysis methods for the moisture, volatile matter, ash, fixed carbon content, sulfur content, and acid-soluble iron content of graphite products. This standard applies to natural graphite products.
This standard specifies the determination methods for aluminum oxide, calcium oxide, magnesium oxide, silicon dioxide, iron oxide, titanium dioxide, potassium oxide, sodium oxide, chloride ions, carbon and sulfur, pH value, and loss on ignition in corundum powder. This standard is applicable to the chemical analysis of corundum powder with an aluminum oxide content (mass fraction) of not less than 90%.
This part of GB/T 10335 specifies the classification, requirements, test methods, inspection rules, and marking, packaging, transportation, and storage of coated boxboard. This part applies to coated boxboard made from bleached wood pulp for the face layer and unbleached sulfate wood pulp for the backing layer, which is coated on one side. This product is mainly used as the surface material for products such as corrugated board, hard fiberboard, or "cardboard boxes".
This standard specifies the ordering content, dimensions, shape, weight, and allowable deviations of steel for high-strength round chain used in mining, as well as technical requirements, test methods, inspection rules, packaging, marking, and quality certificates. This standard applies to hot-rolled and cold-drawn rods and coils (hereinafter referred to as round steel) used in the manufacture of high-strength round chains for coal mine scraper conveyors and coal plow machines.
This standard specifies the gas chromatography method for determining the main sugar components in paper-making raw materials and pulp. This standard is applicable to the determination of sugar components in various paper-making raw materials and pulps.
This standard specifies the product classification, technical requirements, test methods, inspection rules, and marking, packaging, transportation, and storage of writing paper. This standard applies to forms, exercise books, notebooks, account books, and other writing papers.
This standard specifies the classification, order content, technical requirements, test methods, inspection rules, packaging, marking, and quality certificates of steel wire ropes used in conveyor belts. This standard applies to galvanized steel wire ropes used as reinforcement materials for steel wire rope-core conveyor belts (hereinafter referred to as steel wire ropes).
This standard specifies two methods for determining the tensile strength of paper and cardboard: the constant load method and the constant stretch method. This standard applies to all types of paper and cardboard except corrugated cardboard.
This standard specifies the classification and designations, dimensions, shapes, and allowable deviations of hexagonal and circular hollow steel for rock drilling rods, as well as technical requirements, test methods, inspection rules, packaging, marking, and quality certificates. This standard applies to hexagonal and circular hollow steel for rock drilling rods.
This standard specifies the selection and preparation of samples, the measurement method, and the test report for determining the content of the α-phase area in stainless steel by metallographic methods. This standard is applicable to the determination of the α-phase area content in austenitic stainless steel and ferritic-austenitic duplex stainless steel by metallographic methods.
This standard specifies the terms and definitions, requirements, test methods, inspection rules, user manuals, markings, packaging, transportation, and storage for reading tables, chairs, and stools. This standard applies to reading tables, chairs, and stools used in libraries and archives. Reading tables, chairs, and stools used in other office environments may also be referenced for use.