2020 year China issued GB standards list


	GB/T 39131-2020 Terms and definitions of synthetic crystal materials 人工晶体材料术语
	GB/T 39150-2020 Recycled selenium material 回收硒原料
	GB/T 39154-2020 Corrosion of metals and alloys—Cathodic protection of steel in concrete 金属和合金的腐蚀混凝土用钢筋的阴极保护
	GB/T 39164-2020 Tools for moulding—Thermal insulating sheets for injection moulds 成型模注射模隔热板
	GB/T 39059-2020 Determination of harmful substance emissions from synthetic sports surfaces—Environmental chambers method 运动场地合成材料面层有害物质释放量的测定环境测试舱法
	GB/T 39250-2020 Tractors and machinery for agriculture and forestry—Speed identification sign（SIS）农林拖拉机和机械速度识别标识（SIS）
	GB/T 39080-2020 Specification of amusement rides virtual experience facility 游乐设施虚拟体验系统通用技术条件
	GB/T 26302-2020 Seamless copper and copper alloy tube for heat pipe 热管用铜及铜合金无缝管
	GB/T 39149-2020 Recycled tellurium material 回收碲原料
	GB/T 39049-2020 Technical guidelines for the conservation and restoration of historical and cultural villages 历史文化名村保护与修复技术指南
	GB/T 39251-2020 Additive manufacturing—Methods to characterize performance of metal powders 增材制造金属粉末性能表征方法
	GB/T 39069-2020 Grade requirements for office building 商务楼宇等级划分要求
	GB/T 39232-2020 Zirconia ceramics knife 氧化锆日用陶瓷刀
	GB/T 39240-2020 Non-destructive testing—Ultrasonic testing—General principles 无损检测超声检测总则
	GB/T 39233-2020 Lanthanum-copper alloys 镧铜合金
	GB/T 39066-2020 Terminology of building economy 楼宇经济术语
	GB/T 39063-2020 Consumer product recall—Risk assessment for electronics and electrical appliances 消费品召回电子电器风险评估
	GB/T 39196-2020 Technical specification for waste glass recycling 废玻璃回收技术规范
	GB/T 39242-2020 Non-destructive testing—Ultrasonic testing—Sensitivity and range setting 无损检测超声检测灵敏度和范围设定
	GB/T 39245.1-2020 Grooved metal gaskets with covering layers for pipe flanges—Part 1：PN designated 管法兰用金属齿形组合垫片第1部分：PN 系列

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