2020 year China issued GB standards list


	GB/T 3098.23-2020 Mechanical properties of fasteners—M42～M72 bolts, screws and studs 紧固件机械性能 M42～M72螺栓、螺钉和螺柱
	GB/T 38521-2020 Gas analysis—Purity analysis and the treatment of purity data 气体分析纯度分析和纯度数据的处理
	GB/T 19492-2020 Classifications for petroleum resources and reserves 油气矿产资源储量分类
	GB/T 38596-2020 Determination method of heavy metal contents in the wastewater during catalyst production 催化剂生产废水中重金属含量的测定
	GB/T 5168-2020 Microstructure and macrostructure examination for titanium and titanium alloys 钛及钛合金高低倍组织检验方法
	GB/T 38547-2020 Tourism and vacation rental apartments—Basic requirements 旅游度假租赁公寓基本要求
	GB/T 17989.3-2020 Control charts--Part 3: Acceptance control charts 控制图第3部分：验收控制图
	GB/T 38604.2-2020 Public information guidance systems—Assessment requirement—Part 2: Railway passenger station 公共信息导向系统评价要求第2部分：铁路旅客车站
	GB/T 38579-2020 Determination of photosynthetic bacteria in biologic products 生物产品中光合细菌测定
	GB/T 38650-2020 Safety information markings of piping systems—Design principles and requirements 管道系统安全信息标记设计原则与要求
	GB/T 3906-2020 Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6 kV and up to and including 40.5 kV 3.6 kV～40.5 kV交流金属封闭开关设备和控制设备
	GB/T 12729.4-2020 Spices and condiments—Determination of degree of fineness of grinding（hand sieving method）香辛料和调味品磨碎细度的测定（手筛法）
	GB/T 38371.2-2020 Specification of digital content object storage, reuse and exchange— Part 2: Object encoding, storage and exchange 数字内容对象存储、复用与交换规范第2部分：对象封装、存储与交换
	GB/T 11101-2020 Cemented carbide blanks for round rods 硬质合金圆棒毛坯
	GB/T 38592-2020 Determination of 4,4’-methylene-bis(2-chloroaniline) in textile dyeing and finishing auxiliaries 纺织染整助剂产品中4,4’-亚甲基双(2-氯苯胺)的测定
	GB/T 5959.12-2020 Safety in installations for electroheating and electromagnetic processing—Part 12: Particular requirements for infrared electroheating 电热和电磁处理装置的安全第12部分：对红外电热装置的特殊要求
	GB/T 38656-2020 Communication protocol technical specification of special equipment IoT system 特种设备物联网系统数据交换技术规范
	GB/T 38659.1-2020 Electromagnetic compatibility—Risk assessment—Part 1：Electronic and electrical device 电磁兼容风险评估第1部分：电子电气设备
	GB/T 35840.4-2020 Steels for plastic mould—Part 4: Pre-hardenging steel plate 塑料模具钢第4部分：预硬化钢板
	GB/T 38529-2020 Requirements of concentration limits for restricted substances in tyres 轮胎中限用物质的限量要求

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