China 21 GB Standards List

China "21" GB Standards List:

Standard Code	Standard Title	Standard Class	Order
GB/T 7000.221-2023	Luminaires Part 2-21: Special requirements Light strips {译} 灯具第2-21部分：特殊要求灯带	China National Standards 21	English PDF
GB/T 5170.21-2023	Inspection methods for environmental testing equipment Part 21: Hydraulic vibration systems for vibration (random) testing {译} 环境试验设备检验方法第21部分：振动（随机）试验用液压式振动系统	China National Standards 21	English PDF
GB/T 3883.217-2023	Safety of hand-held and portable power tools and garden tools Part 217: Particular requirements for hand-held wood milling tools {译} 手持式、可移式电动工具和园林工具的安全第217部分：手持式木铣的专用要求	China National Standards 21	English PDF
GB/T 26949.21-2023	Industrial vehicle stability verification Part 21: Picking vehicles with operator position lifting height greater than 1 200 mm {译} 工业车辆稳定性验证第21部分：操作者位置起升高度大于1 200 mm的拣选车	China National Standards 21	English PDF
GB/T 21109.2-2023	Functional safety of safety instrumented systems in the process industry - Part 2: Application guidelines for GB/T 21109.1-2022 {译} 过程工业领域安全仪表系统的功能安全第2部分：GB/T 21109.1—2022的应用指南	China National Standards 21	English PDF
GB/T 13477.21-2022	Test methods for building sealing materials - Part 21: Determination of color change after artificial accelerated weathering {译} 建筑密封材料试验方法第21部分：人工加速气候老化后颜色变化的测定	China National Standards 21	English PDF
GB/T 17466.21-2022	Accessories for household and similar fixed electrical installations - mounting boxes and enclosures - Part 21: Particular requirements for mounting boxes and enclosures for suspension devices {译} 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21部分：用于悬吊装置的安装盒和外壳的特殊要求	China National Standards 21	English PDF
GB/T 41275.21-2022	Avionics Process Management Aerospace and Defense Electronic Systems Containing Lead-Free Solders Part 21: Guidelines for Transitioning to Lead-Free Electronics {译} 航空电子过程管理含无铅焊料航空航天及国防电子系统第21部分：向无铅电子过渡指南	China National Standards 21	English PDF
GB/T 1927.21-2022	Test methods for physical and mechanical properties of wood with small unblemished specimens - Part 21: Determination of nail holding force {译} 无疵小试样木材物理力学性质试验方法第21部分：握钉力测定	China National Standards 21	English PDF
GB/T 3836.21-2022	Explosive atmospheres - Part 21: Application of the quality management system for the production of explosion-proof products {译} 爆炸性环境　第21部分：防爆产品生产质量管理体系的应用	China National Standards 21	English PDF
GB/T 3883.215-2022	Safety of hand-held, portable power tools and garden tools - Part 215: Particular requirements for hand-held mixers {译} 手持式、可移式电动工具和园林工具的安全第215部分：手持式搅拌器的专用要求	China National Standards 21	English PDF
GB/T 3883.211-2021	Safety of motor-operated hand-held, transportable and garden tools - Part 211: Particular requirements for hand-held reciprocating saws 手持式、可移式电动工具和园林工具的安全第211部分：手持式往复锯的专用要求	China National Standards 21	English PDF
GB/T 17215.321-2021	Electricity metering equipment (AC)-Particular requirements-Part 21:Static meters for active energy 电测量设备（交流）特殊要求第21部分：静止式有功电能表 (A级、B级、C级、D级和E级)	China National Standards 21	English PDF
GB/T 17215.221-2021	Electricity metering equipment(a. c. ) -- General requirements, tests and test conditions -- Part 21: Tariff and load control equipment 电测量设备（交流）通用要求、试验和试验条件第21部分：费率和负荷控制设备	China National Standards 21	English PDF
GB/T 14352.21-2021	Methods for chemical analysis of tungsten ores and molybdenum ores -- Part 21: Determination of arsenic content -- Hydride generation atomic fluorescence spectrometry 钨矿石、钼矿石化学分析方法第21部分：砷量的测定氢化物发生-原子荧光光谱法	China National Standards 21	English PDF
GB/T 10395.21-2021	Agricultural and forestry machinery—Safety—Part 21:Rotary tedders and rakes 农林机械安全第21部分：旋转式摊晒机和搂草机	China National Standards 21	English PDF
GB/T 7424.21-2021	Optical fibre cable generic specification—Part 21：Basic optical cable test procedures—Mechanical test methods 光缆总规范第21部分：光缆基本试验方法机械性能试验方法	China National Standards 21	English PDF
GB/T 20975.21-2020	Methods for chemical analysis of aluminium and aluminium alloy—Part 21: Determination of calcium content 铝及铝合金化学分析方法第21部分：钙含量的测定	China National Standards 21	English PDF
GB/T 20818.21-2020	Industrial-process measurement and control—Data structures and elements in process equipment catalogues—Part 21: List of properties (LOP) for automated valves for electronic data exchange—Generic structures 工业过程测量和控制过程设备目录中的数据结构和元素第21部分：自动阀电子数据交换用属性列表(LOP) 通用结构	China National Standards 21	English PDF
GB/T 26958.21-2020	Geometrical product specifications (GPS)—Filtration—Part 21: Linear profile filters: Gaussian filters 产品几何技术规范（GPS）滤波第21部分：线性轮廓滤波器高斯滤波器	China National Standards 21	English PDF
GB/T 13295-2019	Ductile iron pipes, fittings and accessories for water or gas applications [Including 2021XG1] 水及燃气用球墨铸铁管、管件和附件	China National Standards 21	English PDF
GB/T 38317.21-2019	Space and fixing dimensions for smart electricity meter—Part 21: Structure of A-type 智能电能表外形结构和安装尺寸第21部分：结构A型	China National Standards 21	English PDF
GB/T 38317.21-2019	Space and fixing dimensions for smart electricity meter—Part 21: Structure of A-type 智能电能表外形结构和安装尺寸第21部分：结构A型	China National Standards 21	English PDF
GB/T 25000.21-2019	Systems and software engineering—Systems and software Quality Requirements and Evaluation (SQuaRE)—Part 21: Quality measure elements 系统与软件工程系统与软件质量要求和评价(SQuaRE) 第21部分：质量测度元素	China National Standards 21	English PDF
GB/T 7962.21-2019	Test method of colourless optical glass—Part 21：Resistance to attack by aqueous alkaline solutions 无色光学玻璃测试方法第21部分：耐碱稳定性	China National Standards 21	English PDF
GB 4943.21-2019	Information technology equipent—Safety—Part 21:Remote power feeding 信息技术设备安全第21部分：远程馈电	China National Standards 21	English PDF
GB/T 4698.21-2019	Methods for chemical analysis of titanium sponge, titanium and titanium alloys—Part 21: Determination of manganese, chromium, nickel, aluminum, molybdenum, tin, vanadium, yttrium, copper and zirconium content—Atomic emission spectrometry 海绵钛、钛及钛合金化学分析方法第21部分：锰、铬、镍、铝、钼、锡、钒、钇、铜、锆量的测定原子发射光谱法	China National Standards 21	English PDF
GB/T 36419-2018	Household and similar beauty care appliances [Including 2021XG1] 家用和类似用途皮肤美容器	China National Standards 21	English PDF
GB/T 11498-2018	Semiconductor devices—Integrated circuits—Part 21：Sectional specification for film integrated circuits and hybrid film integrated circuits on the basis of the qualification approval procedures 半导体器件-集成电路-第21部分：膜集成电路和混合膜集成电路分规范(采用鉴定批准程序)半导体器件-集成电路-第21部分：膜集成电路和混合膜集成电路分规范(采用鉴定批准程序)	China National Standards 21	English PDF
GB/T 13062-2018	Semiconductor devices—Integrated circuits—Part 21-1:Blank detail specification for film integrated circuits and hybrid film integrated circuits on the basis of the qualification approval procedures 半导体器件-集成电路-第21-1部分：膜集成电路和混合膜集成电路空白详细规范(采用鉴定批准程序)	China National Standards 21	English PDF
GB/T 29618.5215-2018	Field device tool (FDT) interface specification—Part 5215 : Communication implementation for common language infrastructure—IEC 61784 CPF 15 现场设备工具（FDT）接口规范第5215部分：通用语言基础结构的通信实现 IEC 61784 CPF 15	China National Standards 21	English PDF
GB/T 4937.21-2018	Semiconductor devices—Mechanical and climatic test methods—Part 21: Solderability 半导体器件机械和气候试验方法第21部分：可焊性	China National Standards 21	English PDF
GB/T 36611-2018	Mechanical properties measurement—Room temperature tensile test of Ag-and/or Ag alloy-sheathed Bi-2223 and Bi-2212 composite superconductors 力学性能测量 Ag和/或Ag合金包套Bi-2223和Bi-2212复合超导体室温拉伸试验方法	China National Standards 21	English PDF
GB/T 3884.21-2018	Methods for chemical analysis of copper concentrates－Part 21:Determination of copper,sulfur,lead,zinc,iron, aluminium,calcium,magnesium,manganese content－Wavelength dispersive X-ray fluorescence spectrometric method 铜精矿化学分析方法第21部分：铜、硫、铅、锌、铁、铝、钙、镁、锰量的测定波长色散X射线荧光光谱法	China National Standards 21	English PDF
GB/T 4074.21-2018	Winding wires test methods—Part 21: Electrical endurance under high frequency voltage impulses 绕组线试验方法第21部分：耐高频脉冲电压性能	China National Standards 21	English PDF
GB/T 18502-2018	Critical current measurement—DC critical current of Ag-and/or Ag alloy-sheathed Bi-2212 and Bi-2223 oxide superconductors 临界电流测量银和/或银合金包套Bi-2212和Bi-2223氧化物超导体的直流临界电流	China National Standards 21	English PDF
GB/T 8151.21-2017	Methods for chemical analysis of zinc concentrates—Part 21：Determination of thallium content—Inductively coupled plasma mass spectrometry and inductively coupled plasma-atomic emission spectrometry 锌精矿化学分析方法第21部分：铊量的测定电感耦合等离子体质谱法和电感耦合等离子体-原子发射光谱法	China National Standards 21	English PDF
GB/T 13747.21-2017	Methods for chemical analysis of zirconium and zirconium alloys—Part 21：Determination of hydrogen content—Inert gas fusion-infrared absorption or thermal conductivity method 锆及锆合金化学分析方法第21部分：氢量的测定惰气熔融红外吸收法/热导法	China National Standards 21	English PDF
GB/T 34130.21-2017	Powertrack systems—Part 21: Particular requirements for powertrack systems intended for wall and ceiling mounting 电源母线系统第21部分：用于墙壁和天花板安装的电源母线系统的特殊要求	China National Standards 21	English PDF
GB/T 14598.121-2017	Measuring relays and protection equipment—Part 121：Functional requirements for distance protection 量度继电器和保护装置第121部分：距离保护功能要求	China National Standards 21	English PDF
GB/T 3836.21-2017	Explosive atmospheres—Part 21：Application of quality systems for equipment manufacture 爆炸性环境第21部分：设备生产质量体系的应用	China National Standards 21	English PDF
GB/T 20041.21-2017	Conduit systems for cable management—Part 21: Particular requirement for rigid conduit systems 电缆管理用导管系统第21部分：刚性导管系统的特殊要求	China National Standards 21	English PDF
GB/T 15670.21-2017	Toxicological test methods for pesticides registration—Part 21: Unscheduled DNA synthesis (UDS) test with mammalian liver cells in vivo 农药登记毒理学试验方法第21部分：体内哺乳动物肝细胞程序外DNA合成(UDS)试验	China National Standards 21	English PDF
GB/T 34044.2-2017	[Including 2021XG1] Automation systems and integration -- Key performance indicators (KPIs) for manufacturing operations management -- Part 2: Definitions and descriptions 自动化系统与集成制造运行管理的关键性能指标第2部分：定义和描述	China National Standards 21	English PDF
GB/T 13350-2017	Glass wool and its products for thermal insulation [Including 2021XG1] 绝热用玻璃棉及其制品	China National Standards 21	English PDF
GB/T 5169.21-2017	Fire hazard testing for electric and electronic products—Part 21: Abnormal heat—Ball pressure test method 电工电子产品着火危险试验第21部分：非正常热球压试验方法	China National Standards 21	English PDF
GB/T 17215.821-2017	Electricity metering equipment (AC)—Acceptance inspection—Part 21: Particular requirements for electromechanical meters for active energy (classes 0.5, 1 and 2) 交流电测量设备验收检验第21部分：机电式有功电能表的特殊要求(0.5级、1级和2级)	China National Standards 21	English PDF
GB/T 14598.23-2017	Electrical relays—Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment—Section 3: Seismic tests 电气继电器第21部分：量度继电器和保护装置的振动、冲击、碰撞和地震试验第3篇：地震试验	China National Standards 21	English PDF
GB/T 18916.21-2016	Norm of water intake—Part 21：Silk production 取水定额第21部分：真丝绸产品	China National Standards 21	English PDF
GB/T 26949.21-2016	Industrial trucks—Verification of stability—Part 21: Order-picking trucks with operator position elevating above 1 200mm 工业车辆稳定性验证第21部分：操作者位置起升高度大于1 200 mm的拣选车	China National Standards 21	English PDF
GB 14883.5-2016	National Food Safety Standard-Determination of radioactive substance polonium - 210 in food 食品安全国家标准食品中放射性物质钋-210的测定	China National Standards 21	English PDF
GB/T 17215.9321-2016	Electricity metering equipment—Dependability—Part 321: Durability testing of the stability of metrological characteristics by applying elevated temperature 电测量设备可信性第321部分：耐久性-高温下的计量特性稳定性试验	China National Standards 21	English PDF
GB/T 5171.21-2016	Small power motors—Part 21: General test methods 小功率电动机第21部分：通用试验方法	China National Standards 21	English PDF
GB/T 3780.21-2016	Carbon black—Part 21：Determination of sieve residue—Water washing method 炭黑第21部分：筛余物的测定水冲洗法	China National Standards 21	English PDF
GB/T 18802.21-2016	Low-voltage surge protective devices—Part 21: Surge protective devices connected to telecommunications and signaling networks—Performance requirements and testing methods 低压电涌保护器第21部分：电信和信号网络的电涌保护器（SPD）性能要求和试验方法	China National Standards 21	English PDF
GB/T 3871.21-2015	Agricultural tractors—Test procedures—Part 21: Stability 农业拖拉机试验规程第21部分：稳定性	China National Standards 21	English PDF
GB/T 10067.21-2015	Basic specifications for electroheat installations—Part 21: Large capacity electric arc furnace using alternating current 电热装置基本技术条件第21部分：大型交流电弧炉	China National Standards 21	English PDF
GB/T 30839.21-2015	Energy consumption grading for industrial electroheat installations—Part 21：Ladle refining furnace 工业电热装置能耗分等第21部分：钢包精炼炉	China National Standards 21	English PDF
GB 19212.21-2014	Safety of transformers, reactors, power supply units and combinations thereof―Part 21: Particular requirements and tests for small reactors 变压器、电抗器、电源装置及其组合的安全第21部分：小型电抗器的特殊要求和试验	China National Standards 21	English PDF
GB/T 31270.21-2014	Guidelines on environmental safety assessment for chemical pesticides―Part 21: Macro-crustacean toxicity test 化学农药环境安全评价试验准则第21部分：大型甲壳类生物毒性试验	China National Standards 21	English PDF
GB/T 21709.21-2013	Standardized manipulations of acupuncture and moxibustion―Part 21: Filiform needle manipulation by basic applying technique 针灸技术操作规范第21部分：毫针基本手法	China National Standards 21	English PDF
GB 19079.21-2013	Operation conditions and technical requirements for gymnasium and playground―Part 21 : Boxing place 体育场所开放条件与技术要求第21部分：拳击场所	China National Standards 21	English PDF
GB/T 30104.210-2013	Digital addressable lighting interface―Part 210: Particular requirements for control gears―Sequencer (Device Type 9) 数字可寻址照明接口第210部分：控制装置的特殊要求程序装置（设备类型9）	China National Standards 21	English PDF
GB 30000.21-2013	Rules for classification and labelling of chemicals - Part 21: Respiratory or skin sensitization 化学品分类和标签规范第21部分：呼吸道或皮肤致敏	China National Standards 21	English PDF
GB/T 4325.21-2013	Methods for chemical analysis of molybdenum - Part 21: Determination of carbon content and sulfur content - High frequency combustion-infrared absorption method 钼化学分析方法第21部分：碳量和硫量的测定高频燃烧红外吸收法	China National Standards 21	English PDF
GB/T 4324.21-2012	Methods for chemical analysis of tungsten - Part 21: Determination of chromium content - Inductively coupled plasma atomic emission spectrometry 钨化学分析方法第21部分：铬量的测定电感耦合等离子体原子发射光谱法	China National Standards 21	English PDF
GB/T 19882.214-2012	Automatic meter reading system - Part 214：Distribution line carrier meter reading system - Particular requirements for static DLC meters 自动抄表系统第214部分：低压电力线载波抄表系统静止式载波电能表特殊要求	China National Standards 21	English PDF
GB/T 19882.213-2012	Automatic meter reading system - Part 213: Distribution line carrier meter reading system - DLC Acquisition unit 自动抄表系统第213部分：低压电力线载波抄表系统载波采集器	China National Standards 21	English PDF
GB/T 19882.212-2012	Automatic meter reading system - Part 212: Distribution line carrier meter reading system - DLC Concentrator 自动抄表系统第212部分：低压电力线载波抄表系统载波集中器	China National Standards 21	English PDF
GB/T 17215.921-2012	Electricity metering equipment - Dependability - Part 21: Collection of meter dependability data from the field 电测量设备可信性第21部分：现场仪表可信性数据收集	China National Standards 21	English PDF
GB/T 18029.21-2012	Wheelchairs - Part 21: Requirements and test methods for electromagnetic compatibility of electrically powered wheelchairs and scooters, and battery chargers 轮椅车第21部分：电动轮椅车、电动代步车和电池充电器的电磁兼容性要求和测试方法	China National Standards 21	English PDF
GB 5135.21-2011	Automatic sprinkler system - Part 21: Inspector’s test connection 自动喷水灭火系统第21部分：末端试水装置	China National Standards 21	English PDF
GB/T 12085.21-2011	Optics and optical instruments - Environmental test methods - Part 21: Combined low pressure and ambient temperature or dry heat 光学和光学仪器环境试验方法第21部分：低压与大气温度、高温综合试验	China National Standards 21	English PDF
GB/T 19882.211-2010	Automatic meter reading system - Part 211：Distribution line carrier meter reading system - System requirements 自动抄表系统第211部分：低压电力线载波抄表系统系统要求	China National Standards 21	English PDF
GB/T 18268.21-2010	Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 21: Particular requirements - Test configurations, operational conditions and performance criteria for sensitive test and measurement equipment for EMC unprotected 测量、控制和实验室用的电设备电磁兼容性要求第21部分：特殊要求无电磁兼容防护场合用敏感性试验和测量设备的试验配置、工作条件和性能判据	China National Standards 21	English PDF
GB/T 25668.2-2010	Modular tooling system for boring and milling Part2: TMG21 Tooling system - Dimensions 镗铣类模块式工具系统第2部分：TMG21工具系统的型式和尺寸	China National Standards 21	English PDF
GB 10395.21-2010	Agricultural and forestry machinery - Safety - Part 21：Tedders and swath rakes with powered tools 农林机械安全第21部分：动力摊晒机和搂草机	China National Standards 21	English PDF
GB/T 14506.21-2010	Methods for chemical analysis of silicate rocks - Part 21: Determination of nickel and cobalt content 硅酸盐岩石化学分析方法第21部分：镍和钴量测定	China National Standards 21	English PDF
GB/T 325.3-2010	Packaging container - Steel drums - Part 3：Non-removable head (tight head) drums with a minimum total capacity of 212l, 216.5l and 230l 包装容器钢桶第3部分：最小总容量212L、216.5L和230L闭口钢桶	China National Standards 21	English PDF
GB/T 325.2-2010	Packaging container - Steel drums - Part 2：Removable head (open head) drums with a minimum total capacity of 208l, 210l and 216.5l 包装容器钢桶第2部分：最小总容量208L、210L和216.5L全开口钢桶	China National Standards 21	English PDF
GB/T 24800.6-2009	Determination of 21 sulfonamides in cosmetics by high performance liquid chromatography method 化妆品中二十一种磺胺的测定高效液相色谱法	China National Standards 21	English PDF
GB/T 16484.21-2009	Chemical analysis methods of rare earth chloride and light rare earth carbonate - Part 21: Determination of iron oxide content - 1,10-phenanthroline spectrophotometry 氯化稀土、碳酸轻稀土化学分析方法第21部分：氧化铁量的测定 1，10-二氮杂菲分光光度法	China National Standards 21	English PDF
GB/T 9649.21-2009	Terminology classification and code of geology and mineral resources -Part 21: Engineering geology 地质矿产术语分类代码第21部分：工程地质学	China National Standards 21	English PDF
GB/T 2910.21-2009	Textiles - Quantitative chemical analysis - Part 21: Mixtures of chlorofibers, certain modacrylics, certain elastanes, acetates, triacetates and certain other fibers (method using cyclohexanone) 纺织品定量化学分析第21部分：含氯纤维、某些改性聚丙烯腈纤维、某些弹性纤维、醋酯纤维、三醋酯纤维与某些其他纤维的混合物（环己酮法）	China National Standards 21	English PDF
GB/T 13748.21-2009	Chemical analysis methods of magnesium and magnesium alloys - Part 21: Determination of elements by photoelectric direct reading atomic emission spectrometry 镁及镁合金化学分析方法第21部分：光电直读原子发射光谱分析方法测定元素含量	China National Standards 21	English PDF
GB 20041.21-2008	Conduit systems for cable management - Part 21: Particular requirement - Rigid conduit systems 电缆管理用导管系统第21部分：刚性导管系统的特殊要求	China National Standards 21	English PDF
GB 17466.21-2008	Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 21: Particular requirements for boxes and enclosures with provision for suspension means 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21部分：用于悬吊装置的安装盒和外壳的特殊要求	China National Standards 21	English PDF
GB/T 19903.121-2008	Industrial automation systems and integration - Physical device control - Data model for computerized numerical controllers - Part 121: Tools for turning machines 工业自动化系统与集成物理设备控制计算机数值控制器用的数据模型第121部分：车床用刀具	China National Standards 21	English PDF
GB/T 17215.421-2008	Electricity metering equipment (a.c) - Tariff and load control - Part 21: Particular requirements for time switches 交流测量-费率和负荷控制第21部分：时间开关的特殊要求	China National Standards 21	English PDF
GB/T 16656.21-2008	Industrial automation systems and integration - Product data representation and exchange - Part 21: Implementation methods: Clear text encoding of the exchange structrue 工业自动化系统与集成-产品数据的表达与交换第21部分: 实现方法: 交换文件结构的纯正文编码	China National Standards 21	English PDF
GB/T 13724-2008	821 BUS - Microprocessor system bus for 1 to 4 byte data 821总线１至４字节数据微处理机系统总线	China National Standards 21	English PDF
GB/T 7672.21-2008	Glass-fiber wound winding wires - Part 21: Glass-fiber wound round copper wire - General requirements 玻璃丝包绕组线第21部分：玻璃丝包铜圆绕组线一般规定	China National Standards 21	English PDF
GB/T 17215.321-2008	Electricity metering equipment (a.c.) - Particular requirements - Part 21: Static meters for active energy (classes 1 and 2) 交流电测量设备特殊要求第21部分：静止式有功电能表（1级和2级）	China National Standards 21	English PDF
GB/T 2951.21-2008	Common test methods for insulating and sheathing materials of electric and optical cables - Part 21:Methods specific to elastomeric compounds - Ozone resistance, hot set and mineral oil immersion tests 电缆和光缆绝缘和护套材料通用试验方法第21部分：弹性体混合料专用试验方法耐臭氧试验-热延伸试验-浸矿物油试验	China National Standards 21	English PDF
GB/T 18380.21-2008	Tests on electric and optical fibre cables under fire conditions - Part 21:Test for vertical flame propagation for a single small insulated wire or cable - Apparatus 电缆和光缆在火焰条件下的燃烧试验第21部分：单根绝缘细电线电缆火焰垂直蔓延试验试验装置	China National Standards 21	English PDF
GB 16917.21-2008	Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBO) Part 21：Applicability of the general rules to RCBO functionally independent of line voltage 家用和类似用途的带过电流保护的剩余电流动作断路器（RCBO）第21部分：一般规则对动作功能与电源电压无关的RCBO的适用性	China National Standards 21	English PDF
GB 16916.21-2008	Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCB) - Part 21:Applicability of the general rules to RCCB functionally independent of line voltage 家用和类似用途的不带过电流保护的剩余电流动作断路器（RCCB）第21部分：一般规则对动作功能与电源电压无关的RCCB的适用性	China National Standards 21	English PDF
GB/T 15257-2008	Mixed modulation chloroprene rubber CR321、CR322 混合调节型氯丁二烯橡胶 CR321、CR322	China National Standards 21	English PDF
GB/T 14647-2008	Chloroprene rubber CR121、CR122 氯丁二烯橡胶CR121、CR122	China National Standards 21	English PDF
GB/T 5121.21-2008	Methods for chemical analysis of copper and copper alloys - Part 21:Determination of titanaum content 铜及铜合金化学分析方法第21部分：钛含量的测定	China National Standards 21	English PDF
GB/T 21753-2008	Chemicals - Test method of repeated dose dermal toxicity:21/28-day study 化学品 21天/28天重复剂量经皮毒性试验方法	China National Standards 21	English PDF
GB/T 6109.21-2008	Enamelled round winding wire - Part 21: Polyester-amide-imide enamelled round copper wire,class 200 漆包圆绕组线第21部分：200级聚酯-酰胺-亚胺漆包铜圆线	China National Standards 21	English PDF
GB/T 15972.21-2008	Specifications for optical fibre test methods - Part 21: Measurement methods and test procedures for dimensions - Coating geometry 光纤试验方法规范第21部分：尺寸参数的测量方法和试验程序涂覆层几何参数	China National Standards 21	English PDF
GB/T 20975.21-2008	Methods for chemical analysis of aluminium and aluminium alloys - Part 21：Determination of calcium content Flame atomic absorption spectrometric method 铝及铝合金化学分析方法第21部分：钙含量的测定火焰原子吸收光谱法	China National Standards 21	English PDF
GB/T 20014.21-2008	Good agricultural practice - Part 21: Penaeid shrimp pond culture control points and compliance criteria 良好农业规范第21部分：对虾池塘养殖控制点与符合性规范	China National Standards 21	English PDF
GB/T 20485.21-2007	Methods for the calibration of vibration and shock transducers - Part 21: Vibration calibration by comparison to a reference transducer 振动与冲击传感器校准方法第21部分：振动比较法校准	China National Standards 21	English PDF
GB/T 21041-2007	Fixed capacitors for use in eiectronic equipment - Part 21: Sectional specification: Fixed sutface mount multilayer capacitors of ceramic dielectric,class 1 电子设备用固定电容器第21部分: 分规范表面安装用1类多层瓷介固定电容器	China National Standards 21	English PDF
GB/T 21038-2007	Fixed capacitors for use in electronic equipment - Part 21-1: Blank detail specification: Fixed surface mount multilayer capacitors of ceramic dielectric,class 1 - Assessment level EZ 电子设备用固定电容器第21-1部分：空白详细规范表面安装用1类多层瓷介固定电容器评定水平 EZ	China National Standards 21	English PDF
GB/T 18802.321-2007	Components for low-voltage surge protective devices - Part 321: Specifications for avalanche breakdown diode(ABD) 低压电涌保护器元件第321部分：雪崩击穿二极管（ABD）规范	China National Standards 21	English PDF
GB/T 19851.21-2007	Sports equipment and playground for middle school ＆ primary school - Part 21：Shuttlecock 中小学体育器材和场地第21部分：毽球、花毽	China National Standards 21	English PDF
GB/T 328.21-2007	Test method for building sheets for waterproofing - Part 21: Palstic and rubber sheets for waterproofing-resistance to peeling of joints 建筑防水卷材试验方法第21部分：高分子防水卷材接缝剥离性能	China National Standards 21	English PDF
GB/T 18015.21-2007	Multicore and symmetrical pair/quad cables for digital communications - Part 21: Horizontal floor wiring - Blank detail specification 数字通信用对绞或星绞多芯对称电缆第21部分：水平层布线电缆空白详细规范	China National Standards 21	English PDF
GB/T 5169.21-2006	Fire hazard testing for electric and eletronic products - Part 21: Abnormal heat - Ball pressure test 电工电子产品着火危险试验第21部分：非正常热球压试验	China National Standards 21	English PDF
GB/T 4169.21-2006	Components of injection moulds for plastics - Part 21: Rectangular locating element 塑料注射模零件第21部分:矩形定位元件	China National Standards 21	English PDF
GB/T 3780.21-2006	Carbon black―Part 21：Determination of sieve residue for rubber compounding ingredients―Water washing method 炭黑第21部分：橡胶配合剂筛余物的测定水冲洗法	China National Standards 21	English PDF
GB/T 12618.5-2006	Open end blind rivets with break pull mandrel and protruding head―property class 20,21 22 开口型平圆头抽芯铆钉 20、21、22级	China National Standards 21	English PDF
GB/T 12617.5-2006	Open end blind rivets with break pull mandrel and countersunk head―property class 20,21,22 开口型沉头抽芯铆钉 20、21、22级	China National Standards 21	English PDF
GB/T 17980.121-2004	Pesticide--Guidelines for the field efficacy trials(Ⅱ)--Part 121:Fungicides against white rot of grape 农药田间药效试验准则(二) 第121部分:杀菌剂防治葡萄白腐病	China National Standards 21	English PDF
GB/T 18802.21-2004	Low-voltage surge protective devices--Part 21:Surge protective devices connected to telecommunications and signalling networks--Performance requirements and testing methods 低压电涌保护器第21部分:电信和信号网络的电涌保护器(SPD)----性能要求和试验方法	China National Standards 21	English PDF
GB/T 19216.21-2003	Tests for electric cables under fire conditions--Circuit integrity--Part 21: Procedures and requirements--Cables of rated voltage up to and including 0.6/1.0kV 在火焰条件下电缆或光缆的线路完整性试验第21部分:试验步骤和要求额定电压0.6/1.0 kV及以下电缆	China National Standards 21	English PDF
GB/T 18310.21-2002	Fibre optic interconnecting devices and passive components--Basic test and measurement procedures--Part 2-21:Tests--Composite temperature-humidity cyclic test 纤维光学互连器件和无源器件基本试验和测量程序第2-21部分:试验温度-湿度组合循环试验	China National Standards 21	English PDF
GB/T 11287-2000	Electrical relays--Part 21:Vibration，shock，bump and seismic tests on measuring relays and protection equipment--Section one:Vibration tests(sinusoidal) 电气继电器第21部分:量度继电器和保护装置的振动、冲击、碰撞和地震试验第1篇:振动试验(正弦)	China National Standards 21	English PDF
GB 14883.5-1994	Examination of radioactive materials for foods--Determination of polonium-210 食品中放射性物质检验钋-210的测定	China National Standards 21	English PDF
GB/T 12416.2-1990	Glass--Hydrolytic resistance ofglass grains at 121℃--Test method and classification 玻璃颗粒在 121℃耐水性的试验方法和分级	China National Standards 21	English PDF
GB/T 12376-1990	Analytical method of polonium-210 in water--Method of preparing sample by electroplating 水中钋-210的分析方法电镀制样法	China National Standards 21	English PDF
GB/T 12118-1989	Data processing--Vocabulary--Part 21:lnterfaces between process computer systems and technical processes 数据处理词汇 21部分:过程计算机系统和技术过程间的接口	China National Standards 21	English PDF

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