Current Category: CN-GB - National standards
本标准规定了管道腐蚀控制工程全生命周期的总则、腐蚀源、材料、技术、开发、设计、制造、装卸、贮存、运输、施工与安装、调试、验收、运行、维护保养、调查与评估、维修、报废、文件和记录、资源等要求。本标准适用于管道腐蚀控制工程全生命周期中有关活动的管理。
This standard specifies the requirements and procedures for introducing environmental factors into the design and development process of electronic and electrical products, including the combination of products and the materials and components that make up the products (hereinafter collectively referred to as "products").
Note: This standard does not preclude the development of more detailed standards or guidelines in other specific fields. When developing these standards or guidelines, it is recommended to refer to this standard to ensure the consistency of relevant standards in the electronic and electrical field.
This standard specifies the following content of bonded abrasives:
a) Dimension symbols;
b) Shape codes and dimension markings;
c) Requirements;
d) Markings;
e) Logos.
This standard applies to bonded abrasives (such as grinding wheels, grinding heads, sandpaper, and grinding stones).
This standard does not apply to superhard abrasive products and coated abrasives.
This standard provides recommendations and guidelines for establishing a single window for international trade. This standard is applicable to the establishment of an international trade data exchange platform.
This part of GB/T 5195 specifies the spectrophotometric method using silver diethyldithiocarbamate to determine the arsenic content.
This part is applicable to the determination of arsenic content in fluorite. The measurement range (mass fraction): 0.000 2% to 0.050 0%.
This standard specifies the hardness, dimensions, shape, technical requirements, test methods, inspection rules, packaging, marking, and quality certificates of pre-hardened high-speed tool steel rods and wires.
This standard applies to pre-hardened high-speed tool steel rods and wires (hereinafter referred to as "steel") with a diameter of 1.0 mm to 15.0 mm and a surface that is either polished or cold-drawn.
This standard specifies the requirements for the layout, organizations and personnel, facilities, services, safety and hygiene, and quality control and improvement of ecological leisure and health (elderly care) bases (hereinafter referred to as bases). This standard applies to the construction, operation, and service management of ecological leisure and health (elderly care) bases.
This standard specifies the requirements for implementing the chain of custody for the production and sale of forest products.
This standard applies to the conformity assessment of third-party sustainable product certifications implemented in accordance with the requirements of the China Forest Certification Council (CFCC).
This part of GB/T 3488 provides a method guide for measuring the grain size of hard alloys using metallographic detection techniques such as optical or electron microscopy.
This part is applicable to WC/Co hard alloy sintered bodies (also known as hard alloys or metal ceramics) primarily composed of WC as the hard phase, and is also suitable for measuring grain size and distribution using the line intercept method.
This part mainly includes the following four aspects:
—— Calibration of the microscope to ensure measurement accuracy;
—— Linear analysis method to obtain sufficient statistically significant data;
—— Analysis method to calculate representative averages;
—— Reporting to meet modern quality reporting requirements.
This part illustrates this recommended technique through a measurement case analysis (see Appendix A).
This part is not applicable to the following aspects:
—— Determination of size distribution;
—— Determination of shape, which still requires further research before shape determination can be achieved.
Coercive magnetic force can sometimes be used to measure grain size, but this method only involves metallographic determination. This method is suitable for hard alloys and is not applicable to powders. However, in principle, this method can also be used to determine the average size of powders that can be embedded or prepared into samples.
This standard specifies the safety requirements for industrial vehicles defined in GB/T 6104.1 during their use, operation, and maintenance, as well as during transportation, pulling, assembly, and storage.
This standard applies to the following vehicle types:
a) Counterbalanced forklifts;
b) Front-moving forklifts (with extendable masts or forks);
c) Reach forklifts;
d) Pallet stackers;
e) Platform stackers;
f) Double-decker stackers;
g) Side-moving forklifts (single-sided);
h) Side-stacking forklifts (double-sided and three-way);
i) Order pickers;
j) Bi-directional and multi-directional forklifts;
k) Counterbalanced container stackers;
l) Articulated counterbalanced forklifts;
m) Telescopic forklifts;
n) Pallet transporters;
o) Tractors with a traction force of no more than 20,000 N;
q) Cargo and personnel carriers;
r) Other pedestrian-operated industrial vehicles and industrial vehicles powered by batteries, diesel, gasoline, or liquefied petroleum gas.
This standard specifies the structure, basic requirements, system performance, testing, marking, storage, transportation, and operation and maintenance requirements of mobile electrochemical energy storage systems.
This standard applies to mobile electrochemical energy storage systems with an interface voltage of 380 V and above. For other interface voltage levels, the standard can be used for reference when implementing the requirements.
This standard specifies the technical requirements for the electrical energy quality, power control, grid adaptability, protection and safety automatic devices, communication and automation, electrical energy metering, grounding and safety marking, and grid access testing of electrochemical energy storage systems connected to the power grid.
This standard applies to electrochemical energy storage systems with a rated power of 100 kW or more and an energy storage time of not less than 15 minutes. Electrochemical energy storage systems of other power ratings and energy storage times may be implemented in accordance with this standard.