2021 year China issued GB standards list


	GB/T 40233-2021 Ergonomics of the thermal environment—Instruments for measuring physical quantities 热环境的人类工效学物理量测量仪器
	GB/T 4214.8-2021 Test method for noise of household and similar electrical appliances—Particular requirements for electric cooking ranges, ovens, grills, microwave ovens and any combination of these 家用和类似用途电器噪声测试方法电灶、烤箱、烤架、微波炉及其组合器具的特殊要求
	GB/T 17215.647-2021 Electricity metering data exchange -- The DLMS/COSEM suite -- Part 47: DLMS/COSEM transport layer for IP networks 电测量数据交换 DLMS/COSEM组件第47部分：基于IP网络的DLMS/COSEM传输层
	GB/T 40281-2021 Determination of content of nonmetallic inclusions in steel—Extremum analytical method 钢中非金属夹杂物含量的测定极值分析法
	GB/T 40453-2021 Detection and identification of Phyllosticta citricarpa (McAlpine) Aa 柑橘黑斑病菌检疫鉴定方法
	GB/T 11807-2021 Characteristics,design and operational procedures for acoustic monitoring systems of loose parts detection important to safety in nuclear power plants 核电厂安全重要松脱部件声学监测系统的特性、设计和运行规程
	GB/T 5095.2505-2021 Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 25-5：Test 25e: Return loss 电子设备用机电元件基本试验规程及测量方法第25-5部分：试验25e：回波损耗
	GB/T 17901.3-2021 Information technology—Security techniques—Key management—Part 3: Mechanisms using asymmetric techniques 信息技术安全技术密钥管理第3部分：采用非对称技术的机制
	GB/T 40458-2021 Specification of nucleic acid extraction used for high-throughput detection of pathogenic microorganisms 用于病原微生物高通量检测的核酸提取技术规范
	GB/T 40568-2021 Nanotechnologies—Characterization of multiwall carbon nanotubes—Mesoscopic shape factors 纳米技术多壁碳纳米管的表征介观形状因子
	GB/T 26779-2021 Hydrogen fuel cell electric vehicle refueling receptacle 燃料电池电动汽车加氢口
	GB/T 20969.5-2021 Special environmental condition—Machinery for plateau—Part 5:Guide rule of test for plateau natural environment—Construction machinery 特殊环境条件高原机械第5部分：高原自然环境试验导则工程机械
	GB/T 40430-2021 Road vehicles—Diagnostic communication over controller area network（DoCAN）—Dictionary 道路车辆基于控制器局域网的诊断通信符号集
	GB/T 28543-2021 Noise measurement method on power capacitors 电力电容器噪声测量方法
	GB/T 51439-2021 Standard for urban pedestrian and bicycle transport system planning 城市步行和自行车交通系统规划标准
	GB/T 40280-2021 Plastics—Resins in the liquid state or as emulsions or dispersions—Determination of apparent viscosity using a single cylinder type rotational viscometer method 塑料液态或乳液态或分散体系的树脂用单筒旋转黏度计测定表观黏度
	GB/T 40523.3-2021 Ships and marine technology—Measurement of changes in hull and propeller performance—Part 3: Alternative methods 船舶与海上技术船体和螺旋桨性能变化测量第3部分：替代方法
	GB/T 18691.3-2021 Agricultural irrigation equipment—Irrigation valves—Part 3: Check valves 农业灌溉设备灌溉阀第3部分：止回阀
	GB/T 5169.2-2021 Fire hazard testing for electric and electronic products—Part 2: Guidance for assessing the fire hazard—General guidelines 电工电子产品着火危险试验第2部分：着火危险评定导则总则
	GB/T 41029-2021 Specification for offshore well abandonment operation of oil & gas drilling 石油天然气钻井海洋弃井作业规程

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