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Standard Code	Standard Title	Standard Class	Order
GB/T 20322-2006	Petroleum and natural gas industries - Reciprocating compressors 石油及天然气工业用往复压缩机	China National Standards or	English PDF
GB/T 20321.2-2006	Inverter of wind and solar energy supply power system for off-grid - Part 2: Testing method 离网型风能、太阳能发电系统用逆变器第2部分：试验方法	China National Standards or	English PDF
GB/T 20321.1-2006	Inverter of wind and solar energy supply power system for off-grid - Part 1: Technical specification 离网型风能、太阳能发电系统用逆变器第1部分：技术条件	China National Standards or	English PDF
GB/T 20320-2013	Measurement and assessment of power quality characteristics of wind turbines generator systems 风力发电机组电能质量测量和评估方法	China National Standards or	English PDF
GB/T 203-2008	Granulated blastfurnace slag used for cement production 用于水泥中的粒化高炉矿渣	China National Standards or	English PDF
GB/T 20319-2006	Code for acceptance of Wind turbines generator systems 风力发电机组验收规范	China National Standards or	English PDF
GB/T 20314-2006	Thin float glass for LCD applications 液晶显示器用薄浮法玻璃	China National Standards or	English PDF
GB/T 20313-2006	Hygrothermal performance of building materials and produts - Determinaton of moisture content by drying at elevated temperature 建筑材料及制品的湿热性能含湿率的测定烘干法	China National Standards or	English PDF
GB/T 20312-2006	Hygrothermal performance of building materials and products - Determination of hygroscopic sorption properties 建筑材料及制品的湿热性能吸湿性能的测定	China National Standards or	English PDF
GB/T 20307-2006	General rules for nanometer-scale length measurement by SEM 纳米级长度的扫描电镜测量方法通则	China National Standards or	English PDF
GB/T 20303.5-2006	Cranes - Cabins - Part 5: Overhead travelling and portal bridge cranes 起重机司机室第5部分：桥式和门式起重机	China National Standards or	English PDF
GB/T 20302-2014	Phosphor-copper anodes 阳极磷铜材	China National Standards or	English PDF
GB/T 2030-2008	Bronze suction valve for seaward sluice 青铜吸入通海阀	China National Standards or	English PDF
GB/T 20301-2015	Oxyger-free copper tube for magnetic induction tube 磁控管用无氧铜管	China National Standards or	English PDF
GB/T 20299.4-2006	Digital technique application of building and residence community - Part 4: Application requirements of control network communication protocol 建筑及居住区数字化技术应用第4部分: 控制网络通信协议应用要求	China National Standards or	English PDF
GB/T 20297-2006	Static Var Compensator field tests 静止无功补偿装置(SVC)现场试验	China National Standards or	English PDF
GB/T 20296-2012	Mnemonics and symbols for integrated ciruuits 集成电路记忆法与符号	China National Standards or	English PDF
GB/T 20295-2014	Application of symbols for binary logic and analogue elements 二进制逻辑元件和模拟元件符号的应用	China National Standards or	English PDF
GB/T 20292-2006	Tumble dryers for household use - Methods for measuring the performance 家用滚筒干衣机性能测试方法	China National Standards or	English PDF
GB/T 2029-2008	Cast steel suction valve for seaward sluice 铸钢吸入通海阀	China National Standards or	English PDF
GB/T 20291.1-2014	Vacuum cleaners for household use—Part 1：Dry vacuumcleaners—Methods for measuring the performance 家用真空吸尘器第1部分：干式真空吸尘器性能测试方法	China National Standards or	English PDF
GB/T 20290-2016	Electric dishwashers for household use—Methods for measuring the performance 家用电动洗碗机性能测试方法	China National Standards or	English PDF
GB/T 20290-2006	Electric dishwashers for household use - Methods for measuring the performance 家用电动洗碗机性能测试方法	China National Standards or	English PDF
GB/T 20289-2006	Electrical storage water heaters 储水式电热水器	China National Standards or	English PDF
GB/T 20285-2006	Toxic classification of fire effluents hazard for materials 材料产烟毒性危险分级	China National Standards or	English PDF
GB/T 20284-2006	Single burning item test for building materials and products 建筑材料或制品的单体燃烧试验	China National Standards or	English PDF
GB/T 20282-2006	Information security technology - Information system security engineering management requirements 信息安全技术信息系统安全工程管理要求	China National Standards or	English PDF
GB/T 20281-2015	Information security technology—Security technical requirements and testing and evaluation approaches for firewall 信息安全技术防火墙安全技术要求和测试评价方法	China National Standards or	English PDF
GB/T 20280-2006	Information security technology Testing and evaluation approaches for network vulnerability scanners 信息安全技术网络脆弱性扫描产品测试评价方法	China National Standards or	English PDF
GB/T 20279-2015	Information security technology—Security technical requirements of network and terminal separation products 信息安全技术网络和终端隔离产品安全技术要求	China National Standards or	English PDF
GB/T 20278-2013	Information security technology—Security technical requirements 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	China National Standards or	English PDF
GB/T 20277-2015	Information security technology—Testing and evaluation approaches of network and terminal separation products 信息安全技术网络和终端隔离产品测试评价方法	China National Standards or	English PDF
GB/T 20276-2006	Information security technology Security requirements for smartcard embedded software(EAL4+) 信息安全技术智能卡嵌入式软件安全技术要求（EAL4增强级）	China National Standards or	English PDF
GB/T 20275-2013	Information security technology—Technical requirements and testing and evaluation approaches for network-based intrusion detection system 信息安全技术网络入侵检测系统技术要求和测试评价方法	China National Standards or	English PDF
GB/T 20274.4-2008	Information security technology Evaluation framework for information systems security assurance Part 4: Engineering assurance 信息安全技术信息系统安全保障评估框架第4部分：工程保障	China National Standards or	English PDF
GB/T 20274.3-2008	Information security technology Evaluation framework for information systems security assurance Part 3: Management assurance 信息安全技术信息系统安全保障评估框架第3部分：管理保障	China National Standards or	English PDF
GB/T 20274.2-2008	Information security technology - Evaluation framework for information systems security assurance Part 2: Technical assurance 信息安全技术信息系统安全保障评估框架第2部分：技术保障	China National Standards or	English PDF
GB/T 20274.1-2006	Information security technology Evaluation framework for information systems security assurance Part 1: Introduction and general model 信息安全技术信息系统安全保障评估框架第一部分：简介和一般模型	China National Standards or	English PDF
GB/T 20273-2006	Information security technology Security techniques requirement for database management system 信息安全技术数据库管理系统安全技术要求	China National Standards or	English PDF
GB/T 20272-2006	Information security technology Security techniques requirement for operating system 信息安全技术操作系统安全技术要求	China National Standards or	English PDF
GB/T 20271-2006	Information security technology Common security techniques requirement for information system 信息安全技术信息系统通用安全技术要求	China National Standards or	English PDF
GB/T 20270-2006	Information security technology Basis security techniques requirement for network 信息安全技术网络基础安全技术要求	China National Standards or	English PDF
GB/T 20269-2006	Information security technology Information system security management requirements 信息安全技术信息系统安全管理要求	China National Standards or	English PDF
GB/T 20268-2006	Specification for collecting and processing in-car navigable geographic data 车载导航地理数据采集处理技术规程	China National Standards or	English PDF
GB/T 20267-2006	Criterion of digital map production for automotive navigation system 车载导航电子地图产品规范	China National Standards or	English PDF
GB/T 20261-2006	Information technology - Systems security engineering - Capability maturity model 信息技术系统安全工程能力成熟度模型	China National Standards or	English PDF
GB/T 20260-2006	Chemical analysis methods for marine sediment 海底沉积物化学分析方法	China National Standards or	English PDF
GB/T 20259-2006	Chemical analysis methods for marine polymetallic nodules 大洋多金属结核化学分析方法	China National Standards or	English PDF
GB/T 20258.4-2007	Data dictionary for fundamental geographic information features - Part 4：data dictionary for fundamental geographic information features of 1:250 000 1:500 000 1:1 000 000 scale 基础地理信息要素数据字典第4部分：1:250 000 1:500 000 1:1 000 000基础地理信息要素数据字典	China National Standards or	English PDF
GB/T 20258.3-2006	Data dictionary for fundamental geographic information features - Part 3：Data dictionary for fundamental geographic information features of 1:25 000 1:50 000 1:100 000 scale 基础地理信息要素数据字典第3部分：1:25 000 1:50 000 1:100 000基础地理信息要素数据字典	China National Standards or	English PDF
GB/T 20258.2-2006	Data dictionary for fundamental geographic information features Part 2: Data dictionary for fundamental geographic information features of 1:5000 1:10000 scale 基础地理信息要素数据字典第2部分：1:5000 1:10000 基础地理信息要素数据字典	China National Standards or	English PDF
GB/T 20258.1-2007	Data dictionary for fundamental geographic information features - Part 1：data dictionary for fundamental geographic information features of 1∶500 1∶1 000 1∶2 000 scale 基础地理信息要素数据字典第1部分：1:500 1:1000、1:2000基础地理信息要素数据字典	China National Standards or	English PDF
GB/T 20257.4-2007	Cartographic symbols for national fundamental scale maps - Part 4: Specifications for cartographic symbols 1:250 000 1:500 000 ＆ 1:1000 000 topographic maps 国家基本比例尺地图图式第4部分：1:250 000 1:500 000 1:1000 000地形图图式	China National Standards or	English PDF
GB/T 20257.3-2006	Cartographic symbols for national fundamental scale maps -- Part 3: Specifications for cartographic symbols 1:25000 1:50000 & 1:100000 topographic maps 国家基本比例尺地图图式第3部分：1:25000 1:50000 1:100000地形图图式	China National Standards or	English PDF
GB/T 20257.2-2006	Cartographic symbols for national fundamental scale maps -- Part 2: Specifications for cartographic symbols 1:5000 & 1:10000 topographic maps 国家基本比例尺地图图式第2部分：1:5000 1:10000 地形图图式	China National Standards or	English PDF
GB/T 20257.1-2007	Cartographic symbols for national fundamental scale maps - Part 1: Specifications for cartographic symbols 1:500 1:1000＆ 1:2000 topographic maps 国家基本比例尺地图图式第1部分：1:500 1:1000 1:2000地形图图式	China National Standards or	English PDF
GB/T 20256-2006	Specifications for the gravimetry control 国家重力控制测量规范	China National Standards or	English PDF
GB/T 20255.6-2008	Methods for chemical analysis of hardmetals - Flame atomic absorption spectrometry - General requirements 硬质合金化学分析方法火焰原子吸收光谱法一般要求	China National Standards or	English PDF
GB/T 20255.5-2006	Methods for chemical analysis of hardmetals - Determination of chromium content - Flame atomic absorption spectrometric method 硬质合金化学分析方法铬量的测定火焰原子吸收光谱法	China National Standards or	English PDF
GB/T 20255.4-2006	Methods for chemical analysis of hardmetals - Determination of cobalt, iron, manganese, molybdenum, nickel, titanium and vanadium contents - Flame atomic absorption spectrometric method 硬质合金化学分析方法钴、铁、锰、钼、镍、钛和钒量的测定火焰原子吸收光谱法	China National Standards or	English PDF
GB/T 20255.3-2006	Methods for chemical analysis of hardmetals - Determination of molybdenum, titanium and vanadium contents - Flame atomic absorption spectrometric method 硬质合金化学分析方法钼、钛和钒量的测定火焰原子吸收光谱法	China National Standards or	English PDF
GB/T 20255.2-2006	Methods for chemical analysis of hardmetals - Determination of cobalt, iron, manganese and nickel contents - Flame atomic absorption spectrometric method 硬质合金化学分析方法钴、铁、锰和镍量的测定火焰原子吸收光谱法	China National Standards or	English PDF
GB/T 20255.1-2006	Methods for chemical analysis of hardmetals - Determination of calcium, potassium, magnesium and sodium contents - Flame atomic absorption spectrometric method 硬质合金化学分析方法钙、钾、镁和钠量的测定火焰原子吸收光谱法	China National Standards or	English PDF
GB/T 20254.2-2015	Copper and copper alloy strips for lead frame—Part 2: Profiled strip 引线框架用铜及铜合金带材第2部分：异型带	China National Standards or	English PDF
GB/T 20254.1-2015	Copper and copper alloy strips for lead frame—Part 1: Plane strip 引线框架用铜及铜合金带材第1部分：平带	China National Standards or	English PDF
GB/T 20253-2006	Nickel plated punched steel strip for rechargeable battery 可充电电池用冲孔镀镍钢带	China National Standards or	English PDF
GB/T 20251-2006	Nickel foam for battery 电池用泡沫镍	China National Standards or	English PDF
GB/T 20249-2006	Acoustics - Definitions and measurement methods for the transmitted fields of focusing ultrasonic transducers 声学聚焦超声换能器发射场特性的定义与测量方法	China National Standards or	English PDF
GB/T 20248-2006	Acoustics - Measurement of sound pressure levels in the interior of aircraft during flight 声学飞行中飞机舱内声压级的测量	China National Standards or	English PDF
GB/T 20247-2006	Acoustics - Measurement of sound absorption in a reverberation room 声学混响室吸声测量	China National Standards or	English PDF
GB/T 20246-2006	Acoustics - Determination of sound power levels of multisource industrial plants for evaluation of sound pressure levels in the environment - Engineering method 声学用于评价环境声压级的多声源工厂的声功率级测定工程法	China National Standards or	English PDF
GB/T 20245.5-2013	Expression of performance of electrochemical analyzers - Part 5: Oxidation-reduction potential or redox potential 电化学分析器性能表示第5部分：氧化还原电位	China National Standards or	English PDF
GB/T 20245.4-2013	Expression of performance of electrochemical analyzers - Part 4: Dissolved oxygen in water measured by membrane covered amperometric sensors 电化学分析器性能表示第4部分：采用覆膜电流式传感器测量水中溶解氧	China National Standards or	English PDF
GB/T 20245.3-2013	Expression of performance of electrochemical analyzers - Part 3: Electrolytic conductivity 电化学分析器性能表示第3部分：电解质电导率	China National Standards or	English PDF
GB/T 20245.2-2013	Expression of performance of electrochemical analyzers - Part 2: pH value 电化学分析器性能表示第2部分：pH值	China National Standards or	English PDF
GB/T 20245.1-2006	Expression of performance of electrochemical analyzers Part1: General 电化学分析器性能表示第1部分：总则	China National Standards or	English PDF
GB/T 20244-2006	Fiber optic devices for image transmission 光学纤维传像元件	China National Standards or	English PDF
GB/T 20242-2006	Acoustics - Procedures for the measurement of real-ear acoustical characteristics of hearing aids 声学助听器真耳声特性的测量方法	China National Standards or	English PDF
GB/T 20240-2006	Bamboo flooring 竹地板	China National Standards or	English PDF
GB/T 20239-2015	Wooden flooring for gymnasium 体育馆用木质地板	China National Standards or	English PDF
GB/T 20238-2006	Installation, inspection and usage guidelines for wooden flooring 木质地板铺装、验收和使用规范	China National Standards or	English PDF
GB/T 20236-2015	Accelerated outdoor weathering test methods for nonmetallic materials using concentrated natural sunlight 非金属材料的聚光加速户外暴露试验方法	China National Standards or	English PDF
GB/T 20235-2006	Technical specification for silver-tin oxide electric contact materials 银氧化锡电触头材料技术条件	China National Standards or	English PDF
GB/T 20234.3-2015	Connection set for conductive charging of electric vehicles—Part 3: DC charging coupler 电动汽车传导充电用连接装置第3部分：直流充电接口	China National Standards or	English PDF
GB/T 20234.2-2015	Connection set for conductive charging of electric vehicles—Part 2: AC charging coupler 电动汽车传导充电用连接装置第2部分：交流充电接口	China National Standards or	English PDF
GB/T 20234.1-2015	Connection set of conductive charging for electric vehicles—Part 1: General requirements 电动汽车传导充电用连接装置第1部分：通用要求	China National Standards or	English PDF
GB/T 20226.2-2006	Micrographics -- A6 size microfilm jackets Part 2: Other types of jacket for 16mm and 35mm microfilm 缩微摄影技术缩微胶片A6尺寸封套第2部分:16mm和35mm缩微胶片用其他类型封套	China National Standards or	English PDF
GB/T 20226.1-2006	Micrographics - A6 size microfilm jackets - Part 1: Five channel jacket for 16mm microfilm 缩微摄影技术缩微胶片A6尺寸封套第1部分:16mm缩微胶片用五片道封套	China National Standards or	English PDF
GB/T 20224-2006	Determination of exposure index, ISO speed ratings, standard output sensitivity and recommended exposure index for digital still cameras 数码照相机曝光指数、ISO感光度值、标准输出灵敏度和推荐曝光指数的确定	China National Standards or	English PDF
GB/T 20221-2006	Unplasticized poly(vinyl chloride)(PVC-U) pipes for non-pressure buried drainage and sewerage systems 无压埋地排污、排水用硬聚氯乙烯(PVC-U)管材	China National Standards or	English PDF
GB/T 20219-2015	Rigid cellular plastics-spray-applied polyurethane foam for thermal insulation 绝热用喷涂硬质聚氨酯泡沫塑料	China National Standards or	English PDF
GB/T 20218-2006	Biaxially oriented polyamide (nylon) film 双向拉伸聚酰胺（尼龙）薄膜	China National Standards or	English PDF
GB/T 20217-2006	Procedures for ensuring the cleanliness of industrial-process measurement and control equipment in oxygen service 保证氧用工业过程测量和控制装置清洁度的程序	China National Standards or	English PDF
GB/T 20213-2006	Expand perlite powder for firecrackers 爆竹用膨胀珍珠岩粉	China National Standards or	English PDF
GB/T 20212-2006	Composition of fixing fuse for firecrakers 爆竹用固引剂	China National Standards or	English PDF
GB/T 20211-2006	Titanium powders for fireworks and firecrackers 烟花爆竹用钛粉	China National Standards or	English PDF
GB/T 20210-2006	Aluminium powdery for fireworks and firecrackers 烟花爆竹用铝粉	China National Standards or	English PDF
GB/T 20209-2006	Al-Mg Alloy powdery for fireworks and firecrackers 烟花爆竹用铝镁合金粉	China National Standards or	English PDF
GB/T 20205-2006	Micropore anti-counterfeiting marker generated by heavy ion 重离子微孔防伪标识	China National Standards or	English PDF
GB/T 20204-2006	General testing specification of automatic system equipment for water resources and hydrology 水利水文自动化系统设备检验测试通用技术规范	China National Standards or	English PDF

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