2021 year China issued GB standards list


	GB/T 26519.1-2021 Persulfate for industrial use—Part 1:Sodium persulfate for industrial use 工业过硫酸盐第1部分：工业过硫酸钠
	GB/T 21413.2-2021 Railway applications—Electric equipment for rolling stock—Part 2:Electrotechnical components—General rules 轨道交通机车车辆电气设备第2部分：电工器件通用规则
	GB/T 26712-2021 Supply stops for sanitary appliance and steam pipe 卫生洁具及暖气管道用角阀
	GB/T 25364.2-2021 Turbocharger seal rings—Part 2:Inspection measuring principles 涡轮增压器密封环第2部分：检验方法
	GB 51428-2021 Standard for fire protection design of coal chemical engineering 煤化工工程设计防火标准
	GB/T 26520-2021 Calcium chloride for industrial use 工业氯化钙
	GB/T 40332-2021 Non-destructive testing—Ultrasonic testing—Characterization and verification of ultrasonic thickness measuring equipment 无损检测超声检测超声测厚仪性能特征和测试方法
	GB/T 20629.4-2021 Non-cellulosic papers for electrical purposes -- Part 4：Aramid fibre paper containing mica particles 电气用非纤维素纸? 第4部分：含云母颗粒的聚芳酰胺纤维纸
	GB/T 29047-2021 Prefabricated directly buried insulating pipes and fittings with polyurethane foamed-plastics and high density polyethylene casing pipes 高密度聚乙烯外护管硬质聚氨酯泡沫塑料预制直埋保温管及管件
	GB/T 30331-2021 Indicator system of warehousing performance 仓储绩效指标体系
	GB/T 30104.303-2021 Digital addressable lighting interface—Part 303: Particular requirements—Input devices—Occupancy sensor 数字可寻址照明接口第303部分：特殊要求输入设备占位传感器
	GB/T 31498-2021 Post crash safety requirement for electric vehicle 电动汽车碰撞后安全要求
	GB 24427-2021 Content limitation of mercury, cadmium and lead for zinc anode primary battery 锌负极原电池汞镉铅含量的限制要求
	GB/T 41068-2021 Nanotechnologies -- Determination of water-soluble anions content in graphene-related powder -- Ion chromatography method 纳米技术石墨烯粉体中水溶性阴离子含量的测定离子色谱法
	GB/T 13627-2021 Criteria for accident monitoring instrumentation for nuclear power plants 核电厂事故监测仪表准则
	GB/T 30574-2021 Safety of machinery—Implementation criteria for safeguarding 机械安全安全防护的实施准则
	GB/T 5204-2021 Periodic surveillance testing of the safety system of nuclear power plant 核电厂安全系统定期试验与监测
	GB/T 39993-2021 Determination of permitted preservatives dimethyl oxazolidine, 7-ethylbicyclooxazolidine and 5-bromo-5-nitro-1,3-dioxane in cosmetics 化妆品中限用防腐剂二甲基噁唑烷、7-乙基双环噁唑烷和5-溴-5-硝基-1,3-二噁烷的测定
	GB/T 39994-2021 Determination of six metal elements (iron, calcium, magnesium, zinc, titanium,copper) in polyolefin pipe system 聚烯烃管道中六种金属元素（铁、钙、镁、锌、钛、铜）的测定
	GB/T 39973-2021 Implementation guidance for energy management systems in textile industry 纺织行业能源管理体系实施指南

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