2020 year China issued GB standards list


	GB/T 39225.1-2020 Guidance for compatibility design and assessment for remotely-handled components of Tokamak fusion reactor—Part 1：Guidance for compatibility design 托卡马克聚变堆遥操作部件兼容性设计与评估技术指南第1部分：设计技术指南
	GB/T 18993.5-2020 Chlorinated poly (vinyl chloride) （PVC-C）piping systems for hot and cold water installations—Part 5：Fitness for the purpose of system 冷热水用氯化聚氯乙烯（PVC-C）管道系统第5部分：系统适用性
	GB/T 39144-2020 Test method for magnesium content in gallium nitride materials—Secondary ion mass spectrometry 氮化镓材料中镁含量的测定二次离子质谱法
	GB/T 19473.1-2020 Polybutene (PB) piping systems for hot and cold water installations—Part 1: General 冷热水用聚丁烯（PB）管道系统第1部分：总则
	GB/T 39285-2020 Method for chemical analysis of palladium compounds—Determination of chlorine content—Ion chromatography 钯化合物分析方法氯含量的测定离子色谱法
	GB/T 39286-2020 Absorption heat exchanger 吸收式换热器
	GB/T 19520.19-2020 Mechanical structures for electronic equipment—Dimensions of mechanical structures of the 482.6 mm (19 in) series—Part 3-107: Dimensions of subracks and plug-in units, small form factor 电子设备机械结构 482.6 mm（19 in）系列机械结构尺寸第3-107部分：小型化插箱和插件的尺寸
	GB/T 39287-2020 Closed expansion vessels 闭式膨胀罐
	GB/T 39152-2020 Test method of the bending stress relaxation for copper and copper alloy 铜及铜合金弯曲应力松弛试验方法
	GB/T 20323-2020 Milling cutters designation —Shank-type and bore-type milling cutters of solid or tipped design or with indexable cutting edges 铣刀代号整体或镶齿结构或带可转位切削刃的带柄和带孔铣刀
	GB 1903.49-2020 National food safety standard - Food nutrition enhancer - Zinc citrate 食品安全国家标准食品营养强化剂柠檬酸锌
	GB/T 18779.4-2020 Geometrical product specifications (GPS)—Inspection by measurement of workpieces and measuring equipment—Part 4: Background on functional limits and specification limits in decision rules 产品几何技术规范（GPS）工件与测量设备的测量检验第4部分：判定规则中功能限与规范限的基础
	GB/T 1632.4-2020 Plastics—Determination of the viscosity of polymers in dilute solution using capillary viscometers—Part 4:Polycarbonate(PC) moulding and extrusion materials 塑料使用毛细管黏度计测定聚合物稀溶液黏度第4部分：聚碳酸酯(PC)模塑和挤出材料
	GB/T 39506-2020 Determination of the poly vinyl chloride (PVC) content of unplasticized poly vinyl chloride (PVC-U) pipes and fittings—Method based on total chlorine content 硬聚氯乙烯（PVC-U）管材及管件中聚氯乙烯（PVC）含量的测定基于总氯含量的方法
	GB/T 39270-2020 Voltage dip indices and severity assessment method 电压暂降指标与严重程度评估方法
	GB/T 16895.21-2020 Low-voltage electrical installations—Part 4–41：Protection for safety—Protection against electric shock 低压电气装置第4-41部分：安全防护电击防护
	GB/T 39523-2020 Test method for torsional vibration of precision planetary cycloidal reducers 精密行星摆线减速器扭转振动性能测试方法
	GB/T 39535-2020 Test method for shore hardness of carbon materials 炭素材料肖氏硬度测定方法
	GB/T 32.1-2020 Hexagon bolts with wire holes on head 六角头头部带孔螺栓
	GB/T 18647-2020 Diagnostic techniques for animal coccidiosis 动物球虫病诊断技术

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