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GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards;  We provide Chinese GB standards and English version GB standards  Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services.
  •  China "NN" GB Standards List:
  • Standard  Code Standard Title Standard Class Order
    GB/T 42086.2-2022 Hydraulic transmission coNNection - Flange connection - Part 2: 42 MPa, DN13~DN76 series
    液压传动连接 法兰连接 第2部分: 42 MPa、DN13~DN76系列
    China National Standards
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    GB/T 42086.1-2022 Hydraulic transmission coNNection flange connection Part 1: 3.5 MPa ~ 35 MPa, DN13 ~ DN127 series
    液压传动连接 法兰连接 第1部分:3.5 MPa~35 MPa、DN13~DN127系列
    China National Standards
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    GB/T 25857-2022 Low ambient temperature air source multi-coNNected heat pump (air conditioner) unit
    低环境温度空气源多联式热泵(空调)机组
    China National Standards
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    GB/T 41951-2022 Corrosion of metals and alloys - Test method for corrosion resistance of steel coNNecting parts and steel components for construction
    金属和合金的腐蚀 建筑用钢连接部件及钢构件耐腐蚀性能测试方法
    China National Standards
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    GB/T 1482-2022 Metal powders - Determination of fluidity - Standard fuNNel method (Hall flow meter)
    金属粉末 流动性的测定 标准漏斗法(霍尔流速计)
    China National Standards
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    GB/T 33523.604-2022 Product Geometry Specification (GPS) Surface Structure Area Method Part 604: Nominal Characteristics of Non-Contact (Coherent ScaNNing Interferometry) Type Instruments
    产品几何技术规范(GPS) 表面结构 区域法 第604部分:非接触(相干扫描干涉)式仪器的标称特性
    China National Standards
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    GB/T 41928-2022 Plastics epoxy resins - Determination of degree of crosslinking of crosslinked epoxy resins by differential scaNNing calorimetry (DSC)
    塑料 环氧树脂 差示扫描量热法(DSC)测定交联环氧树脂交联度
    China National Standards
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    GB/T 19466.5-2022 Plastics - Differential scaNNing calorimetry (DSC) - Part 5: Determination of characteristic reaction curve temperature, time, enthalpy of reaction and conversion
    塑料 差示扫描量热法(DSC) 第5部分: 特征反应曲线温度、时间,反应焓和转化率的测定
    China National Standards
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    GB/T 4352-2022 Truck ruNNing fuel consumption
    载货汽车运行燃料消耗量
    China National Standards
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    GB/T 42193.3-2022 Road vehicles - Communication of emissions-related diagnostics between the vehicle and external equipment - Part 3: Requirements and use of diagnostic coNNectors and associated circuits
    道路车辆 车辆和外部设备之间排放相关诊断的通信 第3部分:诊断连接器和相关电路的要求及使用
    China National Standards
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    GB/T 16850.1-2022 Test methods for optical amplifiers - Part 1: Power and gain parameters of single-chaNNel optical amplifiers
    光放大器试验方法 第1部分:单波道光放大器功率和增益参数
    China National Standards
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    GB/T 42207.5-2022 CoNNectors for electronic equipment - Product requirements - Rectangular connectors - Part 5: Detail specification for snap lock rewirable power connectors with rated voltage DC 250 V and rated current 30 A
    电子设备用连接器 产品要求 矩形连接器 第5部分:额定电压直流250 V额定电流30 A卡扣锁紧可重复接线电源连接器详细规范
    China National Standards
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    GB/T 41898-2022 Determination of corrosion resistance and compactness of coatings on iNNer walls of food metal containers-electrochemical method
    食品金属容器内壁涂覆层耐蚀力和致密性的测定 电化学法
    China National Standards
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    GB/T 41711-2022 Determination of acid resistance, sulfur resistance and salt resistance of coatings on the iNNer wall of food metal containers
    食品金属容器内壁涂覆层抗酸性、抗硫性、抗盐性的测定
    China National Standards
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    GB/T 23718.7-2022 Machine condition monitoring and diagnostics - Requirements for persoNNel qualification and assessment - Part 7: Thermal imaging
    机器状态监测与诊断 人员资格与人员评估的要求 第7部分:热成像
    China National Standards
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    GB/Z 41983-2022 Hydraulic Screw-in Cartridge Valve Mounting CoNNection Dimensions
    液压螺纹插装阀 安装连接尺寸
    China National Standards
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    GB/T 41981.2-2022 CoNNections for hydraulic transmissions - Pressure fittings - Part 2: Connectable under pressure
    液压传动连接 测压接头 第2部分:可带压连接式
    China National Standards
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    GB/T 41981.1-2022 CoNNections for hydraulic transmissions - Pressure fittings - Part 1: Non-pressurized connections
    液压传动连接 测压接头 第1部分:非带压连接式
    China National Standards
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    GB/T 22131-2022 Ultrasonic Testing Method for the INNer Surface of Cylindrical Forgings
    筒形锻件内表面超声波检测方法
    China National Standards
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    GB/T 42046-2022 MaNNed Spacecraft Payload Transportation Requirements
    载人航天器载荷运输要求
    China National Standards
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    GB/T 42047-2022 Determination method for outgassing products of materials and components in the sealed cabin of maNNed spacecraft
    载人航天器密封舱内材料和部组件出气产物测定方法
    China National Standards
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    GB/T 42048-2022 Selection Requirements for MaNNed Space Science and Application Projects
    载人航天空间科学与应用项目遴选要求
    China National Standards
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    GB/T 30834-2022 Evaluation and statistics of non-metallic inclusions in steel - ScaNNing electron microscopy
    钢中非金属夹杂物的评定和统计 扫描电镜法
    China National Standards
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    GB/T 36148.3-2022 Ships and offshore technology - Protection of the offshore environment - Oil booms - Part 3: End coNNectors
    船舶与海上技术 海上环境保护 围油栏 第3部分:端部连接器
    China National Standards
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    GB/T 41887.1-2022 Ships and maritime technology - Guidance for private maritime security companies (PMSCs) on contracting (formal contract) private armed security persoNNel (PCASP) on board ships - Part 1: General
    船舶和海上技术 船上合同制(形式合约)私人武装保安人员(PCASP)的私人海上安保公司(PMSC)指南 第1部分:总则
    China National Standards
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    GB/T 41901.1-2022 Road vehicles - Methodology for coNNected vehicles - Part 1: General information
    道路车辆 网联车辆方法论 第1部分:通用信息
    China National Standards
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    GB/T 41901.2-2022 Road vehicles - Methodology for coNNected vehicles - Part 2: Design guidelines
    道路车辆 网联车辆方法论 第2部分:设计导则
    China National Standards
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    GB/T 41995-2022 Technical specification for evaluation of operating characteristics of grid-coNNected microgrid
    并网型微电网运行特性评价技术规范
    China National Standards
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    GB/T 42051-2022 Inspection and maintenance requirements for structural parts of maNNed submersibles
    载人潜水器结构件检测维护要求
    China National Standards
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    GB/T 42052-2022 Technical specifications for maNNed submersible operating tools
    载人潜水器作业工具技术规范
    China National Standards
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    GB/T 40905.2-2022 Textiles - Quantitative analysis of cashmere, sheep wool, other special animal fibers and their mixtures - Part 2: ScaNNing electron microscopy
    纺织品 山羊绒、绵羊毛、其他特种动物纤维及其混合物定量分析 第2部分:扫描电镜法
    China National Standards
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    GB/T 41970-2022 Smart factory CNC machine tool intercoNNection interface specification
    智能工厂数控机床互联接口规范
    China National Standards
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    GB/T 10786-2022 Inspection method of caNNed food
    罐头食品的检验方法
    China National Standards
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    GB/T 41782.2-2022 Internet of things - System interoperability - Part 2: Network coNNectivity
    物联网 系统互操作性 第2部分:网络连通性
    China National Standards
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    GB/T 41710-2022 Determination of baNNed substances lincomycin and clindamycin in cosmetics by liquid chromatography-tandem mass spectrometry
    化妆品中禁用物质林可霉素和克林霉素的测定 液相色谱-串联质谱法
    China National Standards
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    GB/T 13212-2022 General rules for the quality of caNNed water chestnuts (horseshoes)
    荸荠(马蹄)罐头质量通则
    China National Standards
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    GB/T 41683-2022 Determination of the baNNed substance colchicine and its derivative colcemid in cosmetics by liquid chromatography-tandem mass spectrometry
    化妆品中禁用物质秋水仙碱及其衍生物秋水仙胺的测定 液相色谱-串联质谱法
    China National Standards
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    GB/T 41900-2022 caNNed food code
    罐头食品代号
    China National Standards
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    GB/T 5900.3-2022 Machine tools - Dimensions of spindle end and chuck coNNection - Part 3: Bayonet type
    机床 主轴端部与卡盘连接尺寸 第3部分:卡口型
    China National Standards
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    GB/T 5900.2-2022 Machine tools - Dimensions of spindle end and chuck coNNection - Part 2: Cam-lock type
    机床 主轴端部与卡盘连接尺寸 第2部分:凸轮锁紧型
    China National Standards
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    GB/T 4910-2022 TiNNed round copper wire
    镀锡圆铜线
    China National Standards
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    GB/T 41580-2022 Exposure Control of Nuclear and Radiological Emergency Response PersoNNel
    核与辐射应急响应人员的照射控制
    China National Standards
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    GB/T 5900.4-2022 Machine tools - Dimensions of spindle end and chuck coNNections - Part 4: Cylindrical connections
    机床 主轴端部与卡盘连接尺寸 第4部分:圆柱连接
    China National Standards
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    GB/T 41604-2022 Agricultural vehicles Steering systems for agricultural trailers Semi-trailer articulated steering coNNections
    农业车辆 农用挂车转向系统 半挂车铰接式转向装置连接
    China National Standards
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    GB/T 41651-2022 Road vehicles - Mechanical coupling of towing vehicles with lower front mounted towbar coNNectors and center axle trailers - Interchangeability
    道路车辆 前下部安装牵引杆连接器的牵引车和中置轴挂车间的机械连接 互换性
    China National Standards
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    GB/T 14151-2022 General rules for the quality of caNNed edible mushrooms
    食用菌罐头质量通则
    China National Standards
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    GB/T 41544-2022 Spatio-temporal data specification for wireless network plaNNing
    无线网络规划时空数据规范
    China National Standards
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    GB/T 41600-2022 Test method for straight-line ruNNing stability of automobiles
    汽车直线行驶稳定性试验方法
    China National Standards
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    GB/T 22055-2022 CoNNection dimensions of microscope imaging components
    显微镜 成像部件的连接尺寸
    China National Standards
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    GB/T 17466.22-2022 Accessories for household and similar fixed electrical installations - mounting boxes and enclosures - Part 22: Particular requirements for coNNection boxes and enclosures
    家用和类似用途固定式电气装置的电器附件安装盒和外壳 第22部分:连接盒与外壳的特殊要求
    China National Standards
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    GB/T 41422-2022 Oriented rigid polyvinyl chloride (PVC-O) pipes and coNNectors for pressure water transmission
    压力输水用取向硬聚氯乙烯(PVC-O)管材和连接件
    China National Standards
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    GB/T 41416-2022 Textiles α- Determination of bromociNNamaldehyde and 1,3-propane sulfonic acid lactone
    纺织品 α-溴代肉桂醛和1,3-丙烷磺酸内酯的测定
    China National Standards
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    GB/T 20278-2022 Information security technology—Security technical requirements and testing assessment approaches for network vulnerability scaNNers
    信息安全技术 网络脆弱性扫描产品安全技术要求和测试评价方法
    China National Standards
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    GB/T 41371-2022 Village affairs management—Compile guidelines for items ruNNing process
    村务管理 事项运行流程编制指南
    China National Standards
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    GB/T 19749.2-2022 Coupling capacitors and capacitor dividers—Part 2: DC or AC single-phase coupling capacitor coNNected between line and ground for power line carrier-frequency (PLC) application
    耦合电容器及电容分压器 第2部分:接于线与地之间用于电力线路载波(PLC)的直流或交流单相耦合电容器
    China National Standards
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    GB/T 32280-2022 Test method for warp and bow of silicon wafers—Automated non-contact scaNNing method
    硅片翘曲度和弯曲度的测试  自动非接触扫描法
    China National Standards
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    GB/T 26069-2022 ANNealed monocrystalline silicon wafers
    硅单晶退火片
    China National Standards
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    GB/T 41158.7-2022 Three-dimensional process plaNNing for mechanical products—Part 7: Distribution requirements
    机械产品三维工艺设计 第7部分:发放要求
    China National Standards
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    GB/T 41158.3-2022 Three-dimensional process plaNNing for mechanical products—Part 3: Model building
    机械产品三维工艺设计 第3部分:模型构建
    China National Standards
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    GB/T 41158.4-2022 Three-dimensional process plaNNing for mechanical products—Part 4:Process symbol and annotation
    机械产品三维工艺设计 第4部分:工艺符号与标注
    China National Standards
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    GB/T 41158.6-2022 Three-dimensional process plaNNing for mechanical products—Part 6:Data requirements
    机械产品三维工艺设计 第6部分:数据要求
    China National Standards
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    GB/T 41158.5-2022 Three-dimensional process plaNNing for mechanical products—Part 5:Detailed design
    机械产品三维工艺设计 第5部分:详细设计
    China National Standards
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    GB/T 41158.1-2022 Three-dimensional process plaNNing for mechanical products—Part 1:Terms and definitions
    机械产品三维工艺设计 第1部分:术语和定义
    China National Standards
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    GB/T 41158.2-2022 Three-dimensional process plaNNing for mechanical products—Part 2:General requirements
    机械产品三维工艺设计 第2部分:通用要求
    China National Standards
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    GB/T 41256-2022 Specification for intercoNNection and interoperability of equipment in digital workshops for robotic manufacturing
    机器人制造数字化车间装备互联互通和互操作规范
    China National Standards
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    GB/T 41329-2022 Determination of the flowability of metal powders Standard fuNNel method (Gustafsson flowmeter)
    金属粉末流动性的测定 标准漏斗法(古斯塔弗森流速计)
    China National Standards
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    GB/T 41317-2022 Stainless steel corrugated hose for gas appliance coNNection
    燃气用具连接用不锈钢波纹软管
    China National Standards
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    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
    China National Standards
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    GB/T 51438-2021 Standard for design of shield tuNNel engineering
    盾构隧道工程设计标准
    China National Standards
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    GB/T 18837-2015 Multi-coNNected air-condition(heat pump) unit
    多联式空调(热泵)机组
    China National Standards
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    GB/T 6113.104-2021 Specification for radio disturbance and immunity measuring apparatus and methods—Part 1-4:Radio disturbance and immunity measuring apparatus—AnteNNas and test sites for radiated disturbance measurements
    无线电骚扰和抗扰度测量设备和测量方法规范 第1-4部分:无线电骚扰和抗扰度测量设备 辐射骚扰测量用天线和试验场地
    China National Standards
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    GB/T 41216-2021 Marine combine coNNecting line for mooring
    船用系泊组合连接索
    China National Standards
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    GB/T 38055.5-2021 Rough-terrain trucks—User requirements—Part 5: Interface between variable-reach truck and intergrated persoNNel work platform
    越野叉车 对用户的要求 第5部分:伸缩臂式叉车和集成式人员工作平台的连接装置
    China National Standards
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    GB/T 41036-2021 General specification for super high-low temperature circular electrical coNNector for space applications
    宇航用超高低温圆形电连接器通用规范
    China National Standards
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    GB/T 41217-2021 City metro and composite pipe gallery hot-rolling chaNNel
    城市地铁与综合管廊用热轧槽道
    China National Standards
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    GB/T 41051-2021 Full face tuNNel boring machine -- Safety requirements of hard rock tunnel boring machine
    全断面隧道掘进机 岩石隧道掘进机安全要求
    China National Standards
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    GB/T 41053-2021 Full face tuNNel boring machine—Dual modes (earth pressure balanced and slurry balanced) tunnel boring machine
    全断面隧道掘进机 土压平衡-泥水平衡双模式掘进机
    China National Standards
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    GB/T 41056-2021 Full face tuNNel boring machine—Double shield hard rock tunnel boring machine
    全断面隧道掘进机 双护盾岩石隧道掘进机
    China National Standards
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    GB/T 41052-2021 Full face tuNNel boring machine -- Remote monitoring system
    全断面隧道掘进机 远程监控系统
    China National Standards
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    GB/T 31723.413-2021 Metallic communication cable test methods—Part 4-13: Electromagnetic compatibility (EMC)—Coupling attenuation of links and chaNNels(laboratory conditions)—Absorbing clamp method
    金属通信电缆试验方法 第4-13部分:电磁兼容 链路和信道(实验室条件)的耦合衰减 吸收钳法
    China National Standards
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    GB/T 31723.412-2021 Metallic communication cable test methods—Part 4-12: Electromagnetic compatibility (EMC)—Coupling attenuation or screening attenuation of coNNecting hardware—Absorbing clamp method
    金属通信电缆试验方法 第4-12部分:电磁兼容 连接硬件的耦合衰减或屏蔽衰减 吸收钳法
    China National Standards
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    GB/T 11313.42-2021 Radio-frequency coNNectors -- Part 42: Sectional specification for CQN series quick lock RF connectors
    射频连接器 第42部分:CQN系列快速锁紧射频连接器分规范
    China National Standards
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    GB/T 28581-2021 PlaNNing and design parameter of general warehouse and warehouse area
    通用仓库及库区规划设计参数
    China National Standards
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    GB/T 21021.3-2021 Intermodulation level measurement for passive RF and microwave devices -- Part 3: Measurement of passive intermodulation in coaxial coNNectors
    无源射频和微波元器件的互调电平测量 第3部分:同轴连接器的无源互调测量
    China National Standards
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    GB/T 40565.2-2021 CoNNections for hydraulic fluid power—Quick-action couplings—Part 2:Flush-face type at 20 MPa to 31.5 MPa
    液压传动连接 快换接头 第2部分:20 MPa~31.5 MPa平面型
    China National Standards
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    GB/T 40565.3-2021 CoNNections for hydraulic fluid power—Quick-action couplings—Part 3:Screw connection type for general purpose
    液压传动连接 快换接头 第3部分:螺纹连接通用型
    China National Standards
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    GB/T 40565.4-2021 CoNNections for hydraulic fluid power—Quick-action couplings—Part 4: Screw connection type at 72 MPa
    液压传动连接 快换接头 第4部分:72 MPa螺纹连接型
    China National Standards
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    GB/T 40602.1-2021 AnteNNas and reception systems for radio interference—Part 1: Basic measurement—Method for far field measuring in microwave anechoic chamber
    天线及接收系统的无线电干扰 第1部分:基础测量 天线方向图的室内远场测量方法
    China National Standards
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    GB/T 40602.2-2021 AnteNNas and reception systems for radio interference—Part 2:Basic measurement—Method for near field measuring high gain antenna pattern in microwave anechoic chamber
    天线及接收系统的无线电干扰 第2部分:基础测量 高增益天线方向图室内平面近场测量方法
    China National Standards
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    GB/T 40639-2021 Determination of baNNed trichloroacetic acid in cosmetics
    化妆品中禁用物质三氯乙酸的测定
    China National Standards
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    GB/T 30845.2-2021 Plugs, socket-outlets and ship couplers for high-voltage shore coNNection systems (HVSC-systems)—Part 2: Dimensional compatibility and interchangeability requirements for accessories to be used by various types of ships
    高压岸电连接系统(HVSC系统)用插头、插座和船用耦合器 第2部分:不同类型的船舶用附件的尺寸兼容性和互换性要求
    China National Standards
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    GB/T 40586-2021 Technical requirements of grid-related protection of grid-coNNected power
    并网电源涉网保护技术要求
    China National Standards
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    GB/T 40595-2021 Guide for technology and test on primary frequency control of grid-coNNected power resource
    并网电源一次调频技术规定及试验导则
    China National Standards
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    GB/T 9142-2021 Specification of plastic-steel bilayer self-lubricating materials—Part 1:RuNNing-in layer with modified PTFE tape
    建筑施工机械与设备 混凝土搅拌机
    China National Standards
    NN

    English PDF
    GB 21454-2021 Minimum allowable values of the energy efficiency and energy efficiency grades for multi-coNNected air-condition (heat pump) units
    多联式空调(热泵)机组能效限定值及能效等级
    China National Standards
    NN

    English PDF
    GB/T 40689-2021 Smart city—Technical requirements of management and service platform for device coNNection
    智慧城市 设备联接管理与服务平台技术要求
    China National Standards
    NN

    English PDF
    GB/T 16850.3-2021 Optical amplifiers test methods—Part 3:Noise figure parameters for single-chaNNel amplifiers
    光放大器试验方法 第3部分:单波道光放大器噪声参数
    China National Standards
    NN

    English PDF
    GB/T 40826-2021 Test method for hand-arranging staple length of dehaired cashmere—Flatbed scaNNer method
    分梳山羊绒手排长度试验方法 图板电子扫描仪法
    China National Standards
    NN

    English PDF
    GB/T 40781-2021 General resource of military and civilian—Reference model of heterogeneous systems intercoNNection
    军民通用资源 异构系统互连参考模型
    China National Standards
    NN

    English PDF
    GB/T 12678-2021 Reliability ruNNing test method for motor vehicles
    汽车可靠性行驶试验方法
    China National Standards
    NN

    English PDF

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