Current Category: CN-GB - National standards
本规范适用于新建、扩建和改建城镇公用设施和工业企业中常规的给排水构筑物工程的施工与验收。不适用于工业企业 中具有特殊要求的给排水构筑物工程施工与验收
本规范使用于新建、扩建和改建城镇公共设施和工业企业的室外给排水管道工程的施工及验收；不适用于工业企业中具有特殊要求的给排水管道施工及验收
本规范适用于：工业交通基础设施等布局中古建筑结构的保护；工业振动对古建筑结构影响的评估和防治
本标准适用于抗震设防烈度为6～9度地区，以石油、天然气及其产品为原料的新建、改建和扩建石油化工工程中建(构)筑物的抗震设防分类
This standard specifies the type of system grounding and its safety technical requirements, with the aim of ensuring the safety of people and equipment. This standard applies to power grids with a nominal voltage of AC 220/380 V.
This standard specifies the general safety requirements, inspection rules, and test methods for resistance welding machines. This standard applies to resistance welding machines powered by voltages not exceeding those specified in Table 1 of GB/T 156, or driven by mechanical equipment, as well as welding machines and resistance welding machine controllers (hereinafter referred to as controllers) used in similar processes, including welding machines used independently and in multi-station configurations. Controllers and resistance welding machines can be integrated into a single unit or separated into separate devices. Regardless of the structure, they are all subject to this standard.
This standard specifies the limits of harmful substances in adhesives used for interior architectural decoration and their testing methods. This standard applies to adhesives used for interior architectural decoration.
This standard specifies the technical requirements and performance indicators for centralized control equipment and centralized control systems in the electrical part of power stations, as well as the testing methods, inspection rules, product marking, packaging, transportation, storage, and accompanying product documentation for centralized control equipment. This standard applies to centralized control equipment and systems (hereinafter referred to as centralized control equipment and systems) involved in the electrical part of power stations or power plants of different capacities in power systems and other industrial and mining enterprises; it serves as a basis for manufacturers to design, manufacture, test, store, and transport such products, as well as to formulate product standards for them.
This standard specifies the requirements, test methods, inspection rules, marking labels, packaging, and storage and transportation for high-speed copy recording tapes. This standard applies to standard and long-type high-speed copy recording tapes with a bandwidth of 3.81 mm and γ-ferrite type.
This part of GB/T 12823 specifies the terminology, symbols, and coordinate systems for describing the geometric and spectral conditions of measurement samples to modulate radiation flux, and is applicable to photography and radiology. It primarily provides a systematic method for measuring or specifying the transmission and reflection characteristics of photographic materials.
This part of GB/T 12823 specifies the geometric conditions for measuring the reflectance density of photographic paper and printing plate materials. This part specifies the lighting conditions for various azimuth angles. This measurement is not sensitive to the directional reflection of striped surfaces. This part does not cover the measurement conditions using polarized light. This part is applicable to the measurement of the reflectance characteristics of processed photographic paper materials, and can also be applied to the measurement of the same characteristics of other materials.