2021 year China issued GB standards list


	GB/T 22178-2021 Oxadiazon emulsifiable concentrates 噁草酮乳油
	GB/T 18106-2021 Classification of retail formats 零售业态分类
	GB/T 41120-2021 Non-destructive testing -- Test method for non-ferromagnetic metallic component pulsed eddy current testing 无损检测非铁磁性金属材料脉冲涡流检测
	GB/T 12237-2021 Steel ball valves for petroleum, petrochemical and allied industries 石油、石化及相关工业用的钢制球阀
	GB/T 11313.35-2021 Radio-frequency connectors—Part 35: Sectional specification for 2.92 series R.F connectors 射频连接器第35部分: 2.92系列射频连接器分规范
	GB 39726-2020 Emission standard of air pollutants for foundry industry 铸造工业大气污染物排放标准
	GB/T 7092-2021 Outline dimensions of semiconductor integrated circuits 半导体集成电路外形尺寸
	GB/T 5095.2507-2021 Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 25-7: Test 25g: Impedance, reflection coefficient, and voltage standing wave ratio (VSWR) 电子设备用机电元件基本试验规程及测量方法第25-7部分：试验25g：阻抗、反射系数和电压驻波比（VSWR）
	GB/T 5095.2504-2021 Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 25-4: Test 25d: Propagation delay 电子设备用机电元件基本试验规程及测量方法第25-4部分：试验25d：传输时延
	GB/T 5095.2502-2021 Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 25-2: Test 25b: Attenuation (insertion loss) 电子设备用机电元件基本试验规程及测量方法第25-2部分：试验25b：衰减（插入损耗）
	GB/T 5095.2303-2021 Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 23-3:Screening and filtering tests—Test 23c：Shielding effectiveness of connectors and accessories—Line injection method 电子设备用机电元件基本试验规程及测量方法第23-3部分：屏蔽和滤波试验试验23c：连接器和附件的屏蔽效果线注入法
	GB/T 4022.1-2021 Surface grinding machines with horizontal grinding wheel spindle and reciprocating table—Testing of the accuracy—Part 1：Machines with table surface length of up to 1600 mm 卧轴矩台平面磨床精度检验第1部分：工作台面长度至1600mm的机床
	GB/T 3480.2-2021 Calculation of load capacity of spur and helical gears—Part 2: Calculation of surface durability (pitting) 直齿轮和斜齿轮承载能力计算第2部分：齿面接触强度（点蚀）计算
	GB/T 18802.32-2021 Low-voltage surge protective devices—Part 32: Surge protective devices connected to photovoltaic installations—Selection and application principles 低压电涌保护器第32部分：用于光伏系统的电涌保护器选择和使用导则
	GB/T 20969.4-2021 Special environmental condition—Machinery for plateau—Part 4:Guide rule of test for plateau natural environment—Internal combustion engines 特殊环境条件高原机械第4部分：高原自然环境试验导则内燃动力机械
	GB/T 41225-2021 Limit and determination of free phenols in phenoxy carboxylic acid herbicides 苯氧羧酸类除草剂中游离酚限量及检测方法
	GB/T 30031-2021 Industrial trucks -- Electromagnetic compatibility 工业车辆电磁兼容性
	GB/T 33440-2021 General requirements for interchangeability of natural gas 天然气互换性一般要求
	GB/T 41027-2021 Aluminum alloy MJ thread with small flange blind hole self locking insert for aviation 航空用MJ螺纹铝合金带小凸缘盲孔自锁镶嵌件
	GB/T 41186-2021 Grading for fresh and live abalone 鲜、活鲍分级

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