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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. |
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 6750-2007 |
Paints aNd varnishes - Determination of density - Pyknometer method 色漆和清漆 密度的测定 比重瓶法 |
China National Standards Nd |
 English PDF |
| GB/T 6742-2007 |
Paints aNd varnishes - Bend test (cylindrical mandrel) 色漆和清漆 弯曲试验(圆柱轴) |
China National Standards Nd |
English PDF |
| GB/T 21088-2007 |
Classification aNd definition of the waterborne additives for architectural coatings 建筑涂料水性助剂的分类与定义 |
China National Standards Nd |
English PDF |
| GB/T 1771-2007 |
Paints aNd varnishes - Determination of resistance to neutral salt spray(fog) 色漆和清漆 耐中性盐雾性能的测定 |
China National Standards Nd |
English PDF |
| GB/T 1740-2007 |
Determination of resistance to heat aNd humidity of paint films 漆膜耐湿热测定法 |
China National Standards Nd |
English PDF |
| GB/T 1730-2007 |
Paints aNd varnishes - Pendulum damping test 色漆和清漆 摆杆阻尼试验 |
China National Standards Nd |
English PDF |
| GB/T 1725-2007 |
Paints,varnishes aNd plastics - Determination of non-volatile-matter content 色漆、清漆和塑料 不挥发物含量的测定 |
China National Standards Nd |
English PDF |
| GB/T 8704.5-2007 |
Ferrovanadium - Determination of vanadium content - The ammonium ferrous sulfate titrimetric method aNd the potentiometric titrimetric method 钒铁 钒含量的测定 硫酸亚铁铵滴定法和电位滴定法 |
China National Standards Nd |
English PDF |
| GB/T 8654.1-2007 |
Manganese metal, ferromanganese - silicon, ferromanganese aNd nitrogen - bearing ferromanganese - Determination of iron content - The ortho - phenanthrdine spectrophotometric method and the titanium trichloride - potassium dichromate titrimetric method 金属锰、锰硅合金、锰铁和氮化锰铁 铁含量的测定 邻二氮杂菲分光光度法和三氯化钛 - 重铬酸钾滴定法 |
China National Standards Nd |
English PDF |
| GB/T 7731.2-2007 |
Ferrotungsten - Determination of manganese content - The periodate spectrophotometric method aNd the flame atomic absorption spectrometric method 钨铁 锰含量的测定 高碘酸盐分光光度法和火焰原子吸收光谱法 |
China National Standards Nd |
English PDF |
| GB/T 6400-2007 |
Metallic materials - Shear test method for wires aNd rivets 金属材料 线材和铆钉剪切试验方法 |
China National Standards Nd |
English PDF |
| GB/T 5687.2-2007 |
Ferrochromium , silicochromium aNd nitrogen - bearing ferrochromium - Determination of silicon content - The perchloric acid dehydration gravimetric method 铬铁、硅铬合金和氮化铬铁 硅含量的测定 高氯酸脱水重量法 |
China National Standards Nd |
English PDF |
| GB/T 5059.6-2007 |
Ferromolybdenum - Determination of phosphorus content - Molybdobismuthylphosphoric blue spectrophotometric method aNd the molybdenum blue spectrophotometrc method 钼铁 磷含量的测定 铋磷钼蓝分光光度法和钼蓝分光光度法 |
China National Standards Nd |
English PDF |
| GB/T 4333.4-2007 |
Ferrosilicon - Determination of aluminium content - The chromazurol S spectrophotometric method ,the EDTA titrimetric method aNd the flame atomic absorption spectrometric method 硅铁 铝含量的测定 铬天青S分光光度法、EDTA滴定法和火焰原子吸收光谱法 |
China National Standards Nd |
English PDF |
| GB/T 4059-2007 |
Polycrystalline silicon - examination method - zone - melting on phosphorus uNder controlled atomosphere 硅多晶气氛区熔基磷检验方法 |
China National Standards Nd |
English PDF |
| GB/T 223.82-2007 |
Steel aNd iron - Determination of hydrogen content - Inert gas impulse fusion heat conductivity method 钢铁 氢含量的测定 惰气脉冲熔融热导法 |
China National Standards Nd |
English PDF |
| GB/T 223.81-2007 |
Iron, steel aNd alloy - Determination of total aluminum and total boron contents - Microwave digestion - inductively coupled plasma mass spectrometric method 钢铁及合金 总铝和总硼含量的测定 微波消解-电感耦合等离子体质谱法 |
China National Standards Nd |
English PDF |
| GB/T 223.80-2007 |
Iron，steel aNd alloy - Determination of trace bismuth and arsenic contents - Hydride generation - atomic fluorescence spectrometric method 钢铁及合金 铋和砷含量的测定 氢化物发生-原子荧光光谱法 |
China National Standards Nd |
English PDF |
| GB/T 223.79-2007 |
Iron aNd steel - Determination of multi - element contents - X - ray fluorescence spectrometry (Routine method) 钢铁 多元素含量的测定 X-射线荧光光谱法（常规法） |
China National Standards Nd |
English PDF |
| GB/T 15227-2007 |
Test method of air permeability, watertightness, wiNd load resistance performance for curtain walls 建筑幕墙气密、水密、抗风压性能检测方法 |
China National Standards Nd |
English PDF |
| GB/T 14370-2007 |
Anchorage,grip aNd coupler for prestressing tendons 预应力筋用锚具、夹具和连接器 |
China National Standards Nd |
English PDF |
| GB/T 11094-2007 |
Horizontal bridgman grown gallium arsenide single crystal aNd cutting wafer 水平法砷化镓单晶及切割片 |
China National Standards Nd |
English PDF |
| GB/T 11093-2007 |
Liquid encapsulated czochralski - grown gallium arsenide single crystals aNd as-cut slices 液封直拉法砷化镓单晶及切割片 |
China National Standards Nd |
English PDF |
| GB/T 11073-2007 |
StaNdard method for measuring radial resistivity variation on silicon slices 硅片径向电阻率变化的测量方法 |
China National Standards Nd |
English PDF |
| GB/T 21061-2007 |
The specification of electronic government network technology aNd using management 国家电子政务网络技术和运行管理规范 |
China National Standards Nd |
English PDF |
| GB/T 21098-2007 |
Lamp caps aNd holders together with gauges for the control of interchangeability and safety - Part 4: Guidelines and general information 灯头、灯座及检验其安全性和互换性的量规 第4部分：导则及一般信息 |
China National Standards Nd |
English PDF |
| GB/T 21097.1-2007 |
General requirements on fixed number of years of safety use aNd recycling for household and similar electrical appliances 家用和类似用途电器的安全使用年限和再生利用通则 |
China National Standards Nd |
English PDF |
| GB/Z 6113.404-2007 |
Specification for radio disturbance aNd immunity measuring apparatus and methods - Part 4-4 Uncertainties,statistics and limit modelling- Statistics of complaints and a model for the calculation of limits 无线电骚扰和抗扰度测量设备和测量方法规范 第4-4部分：不确定度、统计学和限值建模 抱怨的统计和限值的计算模型 |
China National Standards Nd |
English PDF |
| GB/Z 6113.403-2007 |
Specification for radio disturbance aNd immunity measuring apparatus and methods - Part 4-3：Uncertainties,statistics and limit modelling - Statistical considerations in the determination of EMC compliance of mass-produced 无线电骚扰和抗扰度测量设备和测量方法规范 第4-3部分：不确定度、统计学和限值建模 批量产品的EMC符合性确定的统计考虑 |
China National Standards Nd |
English PDF |
| GB/Z 6113.401-2007 |
Specification for radio disturbance aNd immunity measuring apparatus and methods - Part 4-1: Uncertainties,statistics and limit modelling - Uncertainties in standardized EMC tests 无线电骚扰和抗扰度测量设备和测量方法规范 第4-1部分: 不确定度、统计学和限值建模 标准化的EMC试验不确定度 |
China National Standards Nd |
English PDF |
| GB/T 11789-2007 |
Ropes aNd cordage-Equivalence between naturai fibre ropes and man-made fibre ropes for use in the mooring of vessels 绳索和绳索制品 系船用的天然纤维绳索与化学纤维绳索之间的等效性 |
China National Standards Nd |
English PDF |
| GB/T 21083-2007 |
Bank operations - StaNdard scheme for drawing lists 银行业务 债券提款单的标准格式 |
China National Standards Nd |
English PDF |
| GB/T 21080-2007 |
Banking aNd related financial services - Sign-on authentication based on symmetric algorithm 银行业务和相关金融服务 基于对称算法的签名鉴别 |
China National Standards Nd |
English PDF |
| GB/T 21078.1-2007 |
Banking - Personal Identification Number management aNd security - Part 1: Basic principles and requirements for online PIN handling in ATM and POS systems 银行业务 个人识别码的管理与安全 第1部分: ATM和POS系统中联机PIN处理的基本原则和要求 |
China National Standards Nd |
English PDF |
| GB/T 21076-2007 |
Securities aNd related financial instruments - International securities identification numbering system 证券及相关金融工具 国际证券识别编码体系 |
China National Standards Nd |
English PDF |
| GB/T 15948.1-2007 |
Bank telecommunication - FuNds transfer messages -- Part 1: Vocabulary and universal set of data segments and data elements for electronic funds transfer messages 银行电讯 资金转账报文 第1部分：电子资金转账报文数据段和数据元术语及通用集 |
China National Standards Nd |
English PDF |
| GB/T 8089-2007 |
Raw natural rubber - Smoked sheets、white crepes aNd pale crepes 天然生胶 烟胶片、白绉胶片和浅色绉胶片 |
China National Standards Nd |
English PDF |
| GB 21139-2007 |
Basic requirements for staNdard data of fundamental geographic information 基础地理信息标准数据基本规定 |
China National Standards Nd |
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 Nd |
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 Nd |
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 Nd |
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 Nd |
English PDF |
| GB/T 14805.9-2007 |
Electronic data interchange for administration, commerce aNd transport (EDIFACT) - Application level syntax rules (Syntax version number: 4，Syntax release number:1) - Part 9: Security Key and certificate management message (message type-KEYMAN) 行政、商业和运输业电子数据交换（EDIFACT）应用级语法规则(语法版本号:4，语法发布号:1) 第9部分: 安全密钥和证书管理报文(报文类型为KEYMAN) |
China National Standards Nd |
English PDF |
| GB/T 14805.8-2007 |
Electronic data interchange for administration, commerce aNd transport (EDIFACT) - Application level syntax rules (Syntax version number: 4，Syntax release number:1) - Part 8: Associated data in EDI 行政、商业和运输业电子数据交换（EDIFACT） 应用级语法规则(语法版本号:4，语法发布号:1) 第8部分: 电子数据交换中的相关数据 |
China National Standards Nd |
English PDF |
| GB/T 14805.7-2007 |
Electronic data interchange for administration, commerce aNd transport (EDIFACT) - Application level syntax rules (Syntax version number: 4，Syntax release number:1) - Part 7: Security rules for batch EDI (Confidentiality) 行政、商业和运输业电子数据交换（EDIFACT） 应用级语法规则(语法版本号:4，语法发布号:1) 第7部分: 批式电子数据交换安全规则(保密性) |
China National Standards Nd |
English PDF |
| GB/T 14805.6-2007 |
Electronic data interchange for administration, commerce aNd transport (EDIFACT) - Application level syntax rules (Syntax version number: 4，Syntax release number:1) - Part 6: Secure authentication and acknowledgement message(message type - AUTACK) 行政、商业和运输业电子数据交换（EDIFACT） 应用级语法规则(语法版本号:4，语法发布号:1) 第6部分: 安全鉴别和确认报文(报文类型为AUTACK) |
China National Standards Nd |
English PDF |
| GB/T 14805.5-2007 |
Electronic data interchange for administration, commerce aNd transport (EDIFACT) - Application level syntax rules (Syntax version number: 4，Syntax release number:1) - Part 5: Security rules for batch EDI (authenticity, integrity and non-repudiation of 行政、商业和运输业电子数据交换(EDIFACT) 应用级语法规则(语法版本号:4，语法发布号:1) 第5部分: 批式电子数据交换安全规则(真实性、完整性和源抗抵赖性) |
China National Standards Nd |
English PDF |
| GB/T 21048-2007 |
Cinematography Star-rating staNdard for cinemas 电影院星级的划分与评定 |
China National Standards Nd |
English PDF |
| GB 21075-2007 |
Reservoir-iNduced earthquake hazard assessment 水库诱发地震危险性评价 |
China National Standards Nd |
English PDF |
| GB/T 19617-2007 |
Test method for length of cotton - HaNd-measured staple length 棉花长度试验方法 手扯尺量法 |
China National Standards Nd |
English PDF |
| GB/T 6730.13-2007 |
Iron ores - Determination of calcium aNd magnesium content - EGTA-CyDTA titrimetric method 铁矿石 钙和镁含量的测定 EGTA-CyDTA滴定法 |
China National Standards Nd |
English PDF |
| GB/T 5027-2007 |
Metallic materials - Sheet aNd strip - Determination of plastic strain ratio 金属材料 薄板和薄带塑性应变比（r值）的测定 |
China National Standards Nd |
English PDF |
| GB/T 4156-2007 |
Metallic materials - Sheet aNd strip - Erichsen cupping test 金属材料 薄板和薄带埃里克森杯突试验 |
China National Standards Nd |
English PDF |
| GB/T 3274-2007 |
Hot-rolled plates aNd strips of carbon structural steels and high strength low alloy structural steels 碳素结构钢和低合金结构钢热轧厚钢板和钢带 |
China National Standards Nd |
English PDF |
| GB/T 21073-2007 |
Epoxy-coated seven-wire prestressing steel straNd 环氧涂层七丝预应力钢绞线 |
China National Standards Nd |
English PDF |
| GB/T 14985-2007 |
General rules of dimensions, shape, surface, quality, testing method aNd inspection for expansion alloys 膨胀合金尺寸、外形、表面质量、试验方法和检验规则的一般规定 |
China National Standards Nd |
English PDF |
| GB/T 21068-2007 |
StaNdard specification for LNG density calculation models 液化天然气密度计算模型规范 |
China National Standards Nd |
English PDF |
| GB/T 9008-2007 |
Terms of liquid chromatography - Column chromatography aNd planar chromatography 液相色谱法术语 柱色谱法和平面色谱法 |
China National Standards Nd |
English PDF |
| GB/T 6911-2007 |
Water for iNdustrial circulating cooling system and boiler - Determination of sulfate 工业循环冷却水和锅炉用水中硫酸盐的测定 |
China National Standards Nd |
English PDF |
| GB/T 3729-2007 |
n-Butyl acetate for iNdustrial use 工业用乙酸正丁酯 |
China National Standards Nd |
English PDF |
| GB/T 3728-2007 |
Ethyl acetate for iNdustrial use 工业用乙酸乙酯 |
China National Standards Nd |
English PDF |
| GB/T 2916-2007 |
Plastic - Vinyl chloride homopolymer aNd copolymer resins - Sieve analysis using air-jet sieve apparatus 塑料 氯乙烯均聚和共聚树脂 用空气喷射筛装置的筛分析 |
China National Standards Nd |
English PDF |
| GB/T 21058-2007 |
Inorganic chemical for iNdustrial use - General method for mercury content-Flameless atomic absorption spectrometric method 无机化工产品中汞含量测定的通用方法 无火焰原子吸收光谱法 |
China National Standards Nd |
English PDF |
| GB/T 21057-2007 |
Inorganic chemical for iNdustrial use - General method for determination of fluorine content-Ion selective electrode method 无机化工产品中氟含量测定的通用方法 离子选择性电极法 |
China National Standards Nd |
English PDF |
| GB/T 21056-2007 |
Specification for adjustable speed drive systems of electricity conservation with VF for fans aNd pumps 风机、泵类负载变频调速节电传动系统及其应用技术条件 |
China National Standards Nd |
English PDF |
| GB/T 14637-2007 |
INdustrial circulating cooling water and scale-Determination of copper，zinc-Atomic absorption spectrometric method 工业循环冷却水及水垢中铜、锌的测定 原子吸收光谱法 |
China National Standards Nd |
English PDF |
| GB/T 14636-2007 |
INdustrial circulating cooling water - Determination of calcium, magnesium - Atomic absorption spectrometric method 工业循环冷却水中钙、镁含量的测定 原子吸收光谱法 |
China National Standards Nd |
English PDF |
| GB/T 14415-2007 |
Water for iNdustrial circulating cooling system and boiler - Determination of solids matter 工业循环冷却水和锅炉用水中固体物质的测定 |
China National Standards Nd |
English PDF |
| GB/T 13689-2007 |
Water for iNdustrial circulating cooling system and boiler - Determination of copper 工业循环冷却水和锅炉用水中铜的测定 |
China National Standards Nd |
English PDF |
| GB/T 13097-2007 |
Epichlorohydrin for iNdustrial use 工业用环氧氯丙烷 |
China National Standards Nd |
English PDF |
| GB/T 12763.8-2007 |
Specifications for oceanographic survey - Part 8：marine geology aNd geophysics survey 海洋调查规范 第8部分: 海洋地质地球物理调查 |
China National Standards Nd |
English PDF |
| GB/T 12763.5-2007 |
Specifications for oceanographic survey - Part 5: Survey of acoustical aNd optical parameters in the sea 海洋调查规范 第5部分: 海洋声、光要素调查 |
China National Standards Nd |
English PDF |
| GB/T 12763.10-2007 |
Specification for oceanographic survey - Part 10：Submarine topography aNd geomorphology 海洋调查规范 第10部分：海底地形地貌调查 |
China National Standards Nd |
English PDF |
| GB/T 12717-2007 |
Test method of acetates for iNdustrial use 工业用乙酸酯类试验方法 |
China National Standards Nd |
English PDF |
| GB/T 12157-2007 |
Water for iNdustrial circulating cooling system and boiler -Determination of dissolved oxygen 工业循环冷却水和锅炉用水中溶解氧的测定 |
China National Standards Nd |
English PDF |
| GB/T 12152-2007 |
Water for boiler aNd cooling system-Determination of mineral oil 锅炉用水和冷却水中油含量的测定 |
China National Standards Nd |
English PDF |
| GB/T 12149-2007 |
Water for iNdustrial circulating cooling system and boiler - Determination of silica 工业循环冷却水和锅炉用水中硅的测定 |
China National Standards Nd |
English PDF |
| GB/T 21010-2007 |
Current laNd use classification 土地利用现状分类 |
China National Standards Nd |
English PDF |
| GB/T 5169.14-2007 |
Fire hazard testing for electric aNd eletronic products - Part 14: Test flames-1kW nominal pre-mixed flame - Apparatus,confirmatory test arrangement 电工电子产品着火危险试验 第14部分：试验火焰 1kW标称预混合型火焰 设备、确认试验方法和导则 |
China National Standards Nd |
English PDF |
| GB/T 21067-2007 |
Electrical equipment of iNdustrial machines - Electromagnetic compatibility - Immunity of general requirements 工业机械电气设备 电磁兼容 通用抗扰度要求 |
China National Standards Nd |
English PDF |
| GB/T 21066-2007 |
Electrical installations of ships aNd mobile and fixed offshore units - Procedures for calculating short-circuit currents in three phase a.c. 船舶和移动式及固定式近海设施的电气装置 三相交流短路电流计算方法 |
China National Standards Nd |
English PDF |
| GB/T 21065-2007 |
Electrical installation in ships - Installation aNd test of completed installation 船舶电气装置 安装和完工试验 |
China National Standards Nd |
English PDF |
| GB/T 10250-2007 |
Electrical aNd electronic installations in ships - Electromagnetic compatibility 船舶电气与电子设备的电磁兼容性 |
China National Standards Nd |
English PDF |
| GB/T 27021-2007 |
Conformity assessment - Requirements for bodies providing audit aNd certification of management systems 合格评定 管理体系审核认证机构的要求 |
China National Standards Nd |
English PDF |
| GB/T 21006-2007 |
Surface chemical analysis - X-ray photoelectron aNd Auger electron spectrometers - Linearity of intensity scale 表面化学分析 X射线光电子能谱仪和俄歇电子能谱仪 强度标的线性 |
China National Standards Nd |
English PDF |
| GB/T 21005-2007 |
UV erythema reference action spectrum,staNdard erythema dose and UV index 紫外红斑效应参照谱、标准红斑剂量和紫外指数 |
China National Standards Nd |
English PDF |
| GB/T 21000.1-2007 |
Commercial refrigerated cabinets - Methods of test - Part 1: General test coNditions and temperature test 商用冷藏柜 试验方法 第1部分：通用试验条件及温度试验 |
China National Standards Nd |
English PDF |
| GB/T 16828-2007 |
Bar code for commodity - Global location number aNd symbol marking 商品条码 参与方位置编码与条码表示 |
China National Standards Nd |
English PDF |
| GB/T 20432.5-2007 |
Photography Photographic-grade chemicals - Test methods Part 5： Determination of heavy metals aNd iron content 摄影 照相级化学品 试验方法 第5部分：重金属和铁含量的测定 |
China National Standards Nd |
English PDF |
| GB/T 6476-2007 |
Surface griNding machines with vertical grinding wheel spindle and reciprocating table - Testing of the accuracy 立轴矩台平面磨床 精度检验 |
China National Standards Nd |
English PDF |
| GB/T 6139-2007 |
SublaNd twist drills - Technical specifications 阶梯麻花钻 技术条件 |
China National Standards Nd |
English PDF |
| GB/T 6124-2007 |
T-slot cutters - Types aNd sizes T型槽铣刀 型式和尺寸 |
China National Standards Nd |
English PDF |
| GB/T 5288-2007 |
Slideways griNding machines with two columns - Testing of the accuracy 龙门导轨磨床 精度检验 |
China National Standards Nd |
English PDF |
| GB/T 4685-2007 |
External cyliNdrical grinding machines - Testing of the accuracy 外圆磨床 精度检验 |
China National Standards Nd |
English PDF |
| GB/T 4682-2007 |
Internal cyliNdrical grinding machines with horizontal spindle - Testing of the accuracy 内圆磨床 精度检验 |
China National Standards Nd |
English PDF |
| GB/T 4681-2007 |
External cyliNdrical centreless grinding machines - Testing of the accuracy 无心外圆磨床 精度检验 |
China National Standards Nd |
English PDF |
| GB/T 4022.1-2007 |
Surface griNding machines with horizontal grinding wheel spindle and reciprocating table - Testing of the accuracy - Part 1：Machines with a 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 |
China National Standards Nd |
English PDF |
| GB/T 21013-2007 |
Machine tools - Mounting of plain griNding wheels by means of hub flanges 机床 紧固平砂轮用砂轮卡盘 |
China National Standards Nd |
English PDF |
| GB/T 20957.4-2007 |
Test coNditions for precision machining centres - Part 4：Accuracy and repeatability of positioning of linear and rotary axes 精密加工中心检验条件 第4部分：线性和回转轴线的定位精度和重复定位精度检验 |
China National Standards Nd |
English PDF |
| GB/T 2075-2007 |
Classification aNd application of hard cutting materials for metal removal with defined cutting edges ― Designation of the main groups and groups of application 切削加工用硬切削材料的分类和用途 大组和用途小组的分类代号 |
China National Standards Nd |
English PDF |
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