Gb T 38023 2019 Translated English Of Chinese Standard Gbt 38023 2019 Gb T38023 2019 Gbt38023 2019

This Standard specifies the requirements and inspection methods for parts and assemblies of the mechanical watch movements. This Standard applies to parts and assemblies of the mechanical watch movements that have undergone finishing processing.

This Standard specifies metallographic method, magnetic method, chemical composition method in determination methods of ferrite content in austenitic stainless-steel castings and test report. This Standard is applicable to the determination of ferrite content in Cr-Ni austenitic stainless-steel castings. The determination of ferrite content in duplex stainless-steel castings refer to this Standard for implementation.

This Standard specifies test principle, instruments and reagents, sampling and preparation of sample, test steps, test result calculation and allowable deviation for coal tar and quinoline-insoluble for pitch products of coal carbonization that uses coal tar to produce. This Standard is applicable to determinations of contents of coal tar and quinoline-insoluble for pitch products of coal carbonization that uses coal tar to produce.

This Standard specifies the types, service quality requirements and service quality evaluation of logistics public information platform. This Standard is applicable to the service and evaluation of logistics public information platform.

This Part of GB/T 29723 specifies the terms and definitions, basic requirements, calculation methods of energy consumption indexes, grade division and limit of energy consumption index for the main elevating system process in use in coal mines. This Part is applicable to the energy consumption calculation and grade division of the main elevating system of underground coal mine. Other types of elevating systems can also refer to it for use.

This Standard stipulates the principle, sampling and sample preparation, reagents, instruments, test procedures and test result of test for neutrality of benzole products. This Standard is applicable to test for neutrality of benzole products, such as crude benzole, which is recovered from coke oven gas; coking benzene, coking toluene and coking xylene, which are obtained from light benzene through hydrogenation and rectification; petroleum benzene, petroleum toluene and petroleum mixed xylene, which are produced from petroleum fraction through catalytic reforming process, etc.

This Standard stipulates the structural features, technical requirements and test methods of nickel alloy self-lubricated bearing material. This Standard is applicable to nickel alloy self-lubricated bearing material.

This Standard specifies the design bases, design contents and methods, design requirements and design check of structural full penetration weld of self-elevating drilling units. This Standard is applicable to the design of structural full penetration weld of self-elevating drilling units. The design of structural full penetration weld of other types of self-elevating units may also refer to this Standard.