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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 19804-2005 |
Welding-General tolerances for welded constructions-DimenSiOns for lengths and angles-Shape and position 焊接结构的一般尺寸公差和形位公差 |
China National Standards SiO |
 English PDF |
| GB/T 19801-2005 |
Non-destructive testing-Acoustic emisSiOn inspection-Secondary calibration of acoustic emission sensors 无损检测 声发射检测 声发射传感器的二级校准 |
China National Standards SiO |
English PDF |
| GB/T 19800-2005 |
Non-destructive testing-Acoustic emisSiOn inspection-Primary calibration of transducers 无损检测 声发射检测 换能器的一级校准 |
China National Standards SiO |
English PDF |
| GB/T 12604.4-2005 |
Non-destructive testing-Terminology-Terms used in acoustic emisSiOn testing 无损检测 术语 声发射检测 |
China National Standards SiO |
English PDF |
| GB/T 9218-2005 |
Reels for 35mm motion picture projectors-DimenSiOns 35mm电影放映片夹 尺寸 |
China National Standards SiO |
English PDF |
| GB/T 7700-2005 |
Spindle for 16mm motion picture projector reels-DimenSiOns 16mm电影放映机片轴 尺寸 |
China National Standards SiO |
English PDF |
| GB 17691-2005 |
Limits and measurement methods for exhaust pollutants from compresSiOn ignition and gas fuelled positive ignition engines of vehicles (III, IV, V) 车用压燃式、气体燃料点燃式发动机与汽车排气污染物排放限值及测量方法（中国III、IV、V阶段） |
China National Standards SiO |
English PDF |
| GB 3847-2005 |
Limits and measurement methods for exhaust smoke from C.I.E. (CompresSiOn Ignition Engine) and vehicle equiped with C.I.E. 车用压燃式发动机和压燃式发动机汽车排气烟度排放限值及测量方法 |
China National Standards SiO |
English PDF |
| GB 19758-2005 |
Limits and measurement methods for exhaust smoke emisSiOns from motorcycles and mopeds 摩托车和轻便摩托车排气烟度排放限值及测量方法 |
China National Standards SiO |
English PDF |
| GB/T 19755-2005 |
Measurement Methods for EmisSiOns from Light-duty Hybrid Electric Vehicles 轻型混合动力电动汽车 污染物排放测量方法 |
China National Standards SiO |
English PDF |
| GB/T 19770-2005 |
Cinematography-Viewing conditions for the evaluation of films and slides for televiSiOn-Colours,luminances and dimensions 电影 评价电视用电影和幻灯的观看条件 彩色、亮度和尺寸 |
China National Standards SiO |
English PDF |
| GB/T 3856-2005 |
Test method for compresSiOn properties of unidirectional fiber reinforced plastics 单向纤维增强塑料平板压缩性能试验方法 |
China National Standards SiO |
English PDF |
| GB/T 2572-2005 |
Fiber-reiforced plastics composites-Determination for mean coefficient of linear expanSiOn 纤维增强塑料平均线膨胀系数试验方法 |
China National Standards SiO |
English PDF |
| GB/T 19768-2005 |
ExpresSiOn of performance of sample handling systems for process analyzers 过程分析器试样处理系统性能表示 |
China National Standards SiO |
English PDF |
| GB/T 1453-2005 |
Test method for flatwise compresSiOn properties of sandwich constructions or cores 夹层结构或芯子平压性能试验方法 |
China National Standards SiO |
English PDF |
| GB/T 1452-2005 |
Test method for flatwise tenSiOn strength of sandwich constructions 夹层结构平拉强度试验方法 |
China National Standards SiO |
English PDF |
| GB/T 2822-2005 |
Standard linear dimenSiOns 标准尺寸 |
China National Standards SiO |
English PDF |
| GB/T 7314-2005 |
Metallic materials-CompresSiOn testing at ambient temperature 金属材料 室温压缩试验方法 |
China National Standards SiO |
English PDF |
| GB/T 5776-2005 |
CorroSiOn of metals and alloys-Guidelines for exposing and evaluating metals and alloys in surface sea water 金属和合金的腐蚀 金属和合金 在表层海水中暴露和评定的导则 |
China National Standards SiO |
English PDF |
| GB/T 19747-2005 |
CorroSiOn of metals and alloys-Determination of bimetallic Corrosion in outdoor exposure corrosion tests 金属和合金的腐蚀 双金属室外暴露腐蚀试验 |
China National Standards SiO |
English PDF |
| GB/T 19746-2005 |
CorroSiOn of metals and alloys-Alternate immersion test in salt solution 金属和合金的腐蚀 盐溶液周浸试验 |
China National Standards SiO |
English PDF |
| GB/T 19745-2005 |
CorroSiOn tests in artificial atmosphere at very low Concentrations of polluting gas(es) 人造低浓度污染气氛中的腐蚀试验 |
China National Standards SiO |
English PDF |
| GB/T 15970.8-2005 |
CorroSiOn of metals and alloys-Stress corrosion test Part8:Preparation and use of specimens to evaluate weldments 金属和合金的腐蚀 应力腐蚀试验 第8部分:焊接试样的制备和应用 |
China National Standards SiO |
English PDF |
| GB/T 10561-2005 |
Steel-Determination of content of nonmetallic incluSiOns-Micrographic method using standards diagrams 钢中非金属夹杂物含量的测定--标准评级图显微检验法 |
China National Standards SiO |
English PDF |
| GB/Z 19736-2005 |
Electronic imaging-Guidance for selection of document image compresSiOn methods 电子成像 文件图像压缩方法选择指南 |
China National Standards SiO |
English PDF |
| GB/Z 19717-2005 |
Secure message interchange based on Multipurpose Internet Mail ExtenSiOns 基于多用途互联网邮件扩展（MIME）的安全报文交换 |
China National Standards SiO |
English PDF |
| GB/T 19809-2005 |
Plastics pipes and fittings-Preparation of polyethylene(PE)pipe/pipe or pipe/fitting test piece assemblies by butt fuSiOn 塑料管材和管件 聚乙烯(PE)管材/管材或管材/管件热熔对接组件的制备 |
China National Standards SiO |
English PDF |
| GB/T 19808-2005 |
Plastics pipes and fittings Peel decoheSiOn test for polyethylene(PE)electrofusion assemblies of nominal outside diameter greater than or equal to 90 mm 塑料管材和管件 公称外径大于或等于90mm的聚乙烯电熔组件的拉伸剥离试验 |
China National Standards SiO |
English PDF |
| GB/T 19807-2005 |
Plastics pipes and fittings Preparation of test piece assemblies between a polyethylene(PE)pipe and an electrofuSiOn fitting 塑料管材和管件 聚乙烯管材和电熔管件 组合试件的制备 |
China National Standards SiO |
English PDF |
| GB/T 19806-2005 |
Plastics pipes and fittings Crushing decoheSiOn test for polyethylene(PE)electrofusion assemblies 塑料管材和管件 聚乙烯电熔组件的挤压剥离试验 |
China National Standards SiO |
English PDF |
| GB/T 5094.4-2005 |
Industrial systems,installations and equipment and industrial products-Structuring principles and reference designations-Part 4:DiscusSiOn of concepts 工业系统、装置与设备以及工业产品 结构原则与参照代号 第4部分:概念的说明 |
China National Standards SiO |
English PDF |
| GB/T 19675.1-2005 |
DimenSiOns of flexible graphite gaskets reinforced with tanged metal sheet for ripe flanges 管法兰用金属冲齿板柔性石墨复合垫片 尺寸 |
China National Standards SiO |
English PDF |
| GB/T 12221-2005 |
Metal valves-Face to face,end to end,center to face and center to end dimenSiOns 金属阀门 结构长度 |
China National Standards SiO |
English PDF |
| GB/T 14542-2005 |
Guide for maintenance and superviSiOn of transformer oil in service 运行变压器油维护管理导则 |
China National Standards SiO |
English PDF |
| GB/T 14541-2005 |
Guide for maintenance and superviSiOn of in-service mineral turbine oil used for power plants 电厂用运行矿物汽轮机油 维护管理导则 |
China National Standards SiO |
English PDF |
| GB 7000.19-2005 |
Safety requirements for photo and film luminaires(non-profesSiOnal) 照相和电影用灯具(非专业用)安全要求 |
China National Standards SiO |
English PDF |
| GB/T 2423.53-2005 |
Environmental testing for electric and electronic products-Part 2:Test methods-Test Xb:AbraSiOn of markings and letterings caused by rubbing of fingers and hands 电工电子产品环境试验 第2部分:试验方法 试验Xb：由手的磨擦造成标记和印刷文字的磨损 |
China National Standards SiO |
English PDF |
| GB/T 5847-2004 |
DimenSiOnal chain--Methods of calculation 尺寸链 计算方法 |
China National Standards SiO |
English PDF |
| GB/T 6965-2004 |
Testing basic terms of materials for fishing gear--PretenSiOn 渔具材料试验基本条件 预加张力 |
China National Standards SiO |
English PDF |
| GB/T 19597-2004 |
Safety requirements for decommisSiOning of nuclear facilities 核设施退役安全要求 |
China National Standards SiO |
English PDF |
| GB/T 19567.2-2004 |
Bacillus thuringgiensis suspenSiOn concentrate 苏云金芽胞杆菌悬浮剂 |
China National Standards SiO |
English PDF |
| GB/T 18375.7-2004 |
Prosthetics--Structural testing of lower-limb prostheses--Part 7:Test submisSiOn document 假肢 下肢假肢的结构检验 第7部分:试验呈交文件 |
China National Standards SiO |
English PDF |
| GB/T 19554.3-2004 |
Textile machinery and accessories--Main dimenSiOns of open end loop flat steel healds and their corresponding heald-carrying rods--Part 3:Carrying rod for healds with C-and J-shaped end loops 纺织机械与附件 开口式综耳钢片综及相应穿综杆的主要尺寸 第3部分:C型和J型综耳钢片综用穿综杆 |
China National Standards SiO |
English PDF |
| GB/T 19554.2-2004 |
Textile machinery and accessories--Main dimenSiOn of open end loop flat steelhealds and their corresponding heald-carrying rods--Part 2:J-shapes end loops 纺织机械与附件 开口式综耳钢片综及相应穿综杆的主要尺寸 第2部分:J型综耳 |
China National Standards SiO |
English PDF |
| GB/T 19554.1-2004 |
Textile machinery and accessories--Main dimenSiOn of open end loop flat steelhealds and their corresponding heald-carrying rods--Part 1:C-shapes end loops 纺织机械与附件 开口式综耳钢片综及相应穿综杆的主要尺寸 第1部分:C型综耳 |
China National Standards SiO |
English PDF |
| GB/T 19552-2004 |
Textile machinery and accessories--Flat healds with closed end loops--DimenSiOns 纺织机械与附件 闭口综耳钢片综 尺寸 |
China National Standards SiO |
English PDF |
| GB/T 6374-2004 |
Shanks for rock drilling machines and pneumatic tools and fitting dimenSiOns of chuck bushings 凿岩机械与气动工具 尾柄和衬套配合尺寸 |
China National Standards SiO |
English PDF |
| GB/T 19532-2004 |
Packaging material--Volatile corroSiOn inhibiting film 包装材料 气相防锈塑料薄膜 |
China National Standards SiO |
English PDF |
| GB/T 6379.2-2004 |
Accuracy(trueness and preciSiOn)of measurement methods and results--Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method 测量方法与结果的准确度(正确度与精密度) 第2部分:确定标准测量方法重复性与再现性的基本方法 |
China National Standards SiO |
English PDF |
| GB/T 6379.1-2004 |
Accuracy(trueness and preciSiOn)of measurement methods and results--Part 1:General principles and definitions 测量方法与结果的准确度(正确度与精密度) 第1部分:总则与定义 |
China National Standards SiO |
English PDF |
| GB 3836.6-2004 |
Electrical apparatus for explosive gas atmospheres--Part 6:Oil-immerSiOn“o” 爆炸性气体环境用电气设备 第6部分:油浸型“o” |
China National Standards SiO |
English PDF |
| GB/Z 19511-2004 |
Industrial，scientific and medical equipment(ISM)--Guidelines for emisSiOn levels within the bands designated by the ITU 工业、科学和医疗设备(ISM) 国际电信联盟(ITU)指定频段内的辐射电平指南 |
China National Standards SiO |
English PDF |
| GB/T 19502-2004 |
Surface chemical analysis--Glowdischarge optical emisSiOn spectrometry(GD-OES)--Introduction to use 表面化学分析 辉光放电发射光谱方法通则 |
China National Standards SiO |
English PDF |
| GB/T 19494.3-2004 |
Mechanical sampling of coal--Part 3:Determination of preciSiOn and bias test 煤炭机械化采样 第3部分:精密度测定和偏倚试验 |
China National Standards SiO |
English PDF |
| GB/T 12689.12-2004 |
The methods for chemical analysis of zinc and zinc alloys—The determination of lead, cadmium, iron, copper, tin, aluminium, arsenic, stibium, magnesium lanthanum and cerium contents—The inductively coupled plasma-optical emisSiOn spectrometric method 锌及锌合金化学分析方法 铅、镉、铁、铜、锡、铝、砷、锑、镁、镧、铈量的测定 电感耦合等离子体--发射光谱法 |
China National Standards SiO |
English PDF |
| GB 1589-2004 |
Limits of dimenSiOns，axle load and masses for road vehicles 道路车辆外廓尺寸、轴荷及质量限值 |
China National Standards SiO |
English PDF |
| GB/T 6238-2004 |
Agricultural tractors--Operator’s workplace，access and exit--DimenSiOns 农业拖拉机驾驶室门道、紧急出口与驾驶员的工作位置尺寸 |
China National Standards SiO |
English PDF |
| GB/T 6235-2004 |
Agricultural tractors--Operator’s seating accommodation--DimenSiOns 农业拖拉机驾驶员座位装置尺寸 |
China National Standards SiO |
English PDF |
| GB/T 19481-2004 |
Qualifications to be certified as a hospitality profesSiOnal manager 饭店业职业经理人执业资格条件 |
China National Standards SiO |
English PDF |
| GB/T 12027-2004 |
Plastics--Film and sheeting--Determination of dimenSiOnal change on heating 塑料 薄膜和薄片 加热尺寸变化率试验方法 |
China National Standards SiO |
English PDF |
| GB/T 19463-2004 |
Blade length series and its connection dimenSiOns of wiper for passenger cars 乘用车用刮水器刮片长度尺寸系列及连接尺寸 |
China National Standards SiO |
English PDF |
| GB/T 4211.1-2004 |
High speed steel tool bits--Part 1:Types and dimenSiOns 高速钢车刀条 第1部分:型式和尺寸 |
China National Standards SiO |
English PDF |
| GB/T 19449.2-2004 |
Hollow taper interface with flange contact surface--Part 2:Receivers--DimenSiOns 带有法兰接触面的空心圆锥接口 第2部分:安装孔----尺寸 |
China National Standards SiO |
English PDF |
| GB/T 19449.1-2004 |
Hollow taper interface with flange contact surface--Part 1:Shanks--DimenSiOns 带有法兰接触面的空心圆锥接口 第1部分:柄部----尺寸 |
China National Standards SiO |
English PDF |
| GB/T 1442-2004 |
Driving tenons and sockets for parallelshank tools--DimenSiOns 直柄工具用传动扁尾及套筒 尺寸 |
China National Standards SiO |
English PDF |
| GB/T 1131.1-2004 |
Hand reamers--Part 1:Types and dimenSiOns 手用铰刀 第1部分:型式和尺寸 |
China National Standards SiO |
English PDF |
| GB/T 9485-2003 |
Radial turbochargers--Connection dimenSiOns 径流式涡轮增压器 联接尺寸 |
China National Standards SiO |
English PDF |
| GB/T 4983-2003 |
Vacuum technology--Quick release couplings--DimenSiOns--Part 2:Screwed type 真空技术 快卸连接器 尺寸 第2部分:拧紧型 |
China National Standards SiO |
English PDF |
| GB/T 4982-2003 |
Vacuum technology--Quick release couplings--DimenSiOns--Part 1:Clamped type 真空技术 快卸连接器 尺寸 第1部分:夹紧型 |
China National Standards SiO |
English PDF |
| GB/T 19408.1-2003 |
Agricultural vehicles--Mechanical connections between towed and towing vehicles--Part 1:DimenSiOns of hitch-hooks 农业车辆 挂车和牵引车的机械连接 第1部分:牵引钩尺寸 |
China National Standards SiO |
English PDF |
| GB/T 15169-2003 |
Qualification test of welders--FuSiOn welding forsteels 钢熔化焊焊工技能评定 |
China National Standards SiO |
English PDF |
| GB/T 18310.45-2003 |
Fibre optic interconnecting devices and passive components--Basic test and measurement procedures--Part 2-45:Tests--Durability test by water immerSiOn 纤维光学互连器件和无源器件 基本试验和测量程序 第2-45部分:试验 浸水耐久性 |
China National Standards SiO |
English PDF |
| GB/T 3382.2-2003 |
Technical requirements for group 3 facsimile apparatus used in public telephone network--Part 2:Procedures for document facsimile transmisSiOn in the general switched telephone network 文件传真三类机在电话网中的互通技术条件 第2部分:在公用电话交换网上的文件传真传输规程 |
China National Standards SiO |
English PDF |
| GB/T 3382.1-2003 |
Technical requirements for group 3 facsimile apparatus used in public telephone network--Part 1:Standardization of group 3 facsimile terminals for document transmisSiOn 文件传真三类机在电话网中的互通技术条件 第1部分:用于文件传输的三类传真终端的标准化 |
China National Standards SiO |
English PDF |
| GB/T 12690.5-2003 |
Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides--Determination of Al、Cr、Mn、Fe、Co、Ni、Cu、Zn、Pb content by inductively coupled plasma atomic emisSiOn spectrographic method--Determination of Co、M 稀土金属及其氧化物中非稀土杂质化学分析方法 铝、铬、锰、铁、钴、镍、铜、锌、铅的测定 电感耦合等离子体发射光谱法(方法1) 钴、锰、铅、镍、铜、锌、铝、铬的测定 电感耦合等离子 |
China National Standards SiO |
English PDF |
| GB/T 12690.13-2003 |
Chemical analysis methods for non-rareearth impurities of rare earth metals and their oxides--Determination of molybdenum and tungsten content--Induct-ively coupled plasma atomic emisSiOn spectrographic method and inductively coupled plasma mass spectrum 稀土金属及其氧化物中非稀土杂质化学分析方法 钼、钨量的测定 电感耦合等离子体发射光谱法和电感耦合等离子体质谱法 |
China National Standards SiO |
English PDF |
| GB/T 9128-2003 |
DimenSiOns of metallic ring-joint gaskets for use with steel pipe flanges 钢制管法兰用金属环垫 尺寸 |
China National Standards SiO |
English PDF |
| GB/T 8606-2003 |
Thread connectiong dimenSiOns andspecifications of hydraulic fluid power--Quick action couplings 液压快换接头 螺纹连接尺寸及技术要求 |
China National Standards SiO |
English PDF |
| GB/T 5860-2003 |
Hydraulic fluid power--Quick action couplings--DimenSiOns and requirements 液压快换接头 尺寸和要求 |
China National Standards SiO |
English PDF |
| GB/T 19385.2-2003 |
Textile machinery and accessories--Heald frames--Part 2:Heald-carrying rod fixed directly on the frame stave--Coordinated dimenSiOns 纺织机械与附件 综框 第2部分:穿综杆直接固定于综框横梁 相关尺寸 |
China National Standards SiO |
English PDF |
| GB/T 19385.1-2003 |
Textile machinery and accessories--Heald frames--Part 1:Heald-carrying rod fixed to the frame stave by rod support--Coordinated dimenSiOns 纺织机械与附件 综框 第1部分:穿综杆用托座固定于综框横梁 相关尺寸 |
China National Standards SiO |
English PDF |
| GB/T 19383-2003 |
Spinning machinery--Main dimenSiOns and designation of condenser rubbers for cards 纺纱机械 梳毛机用搓条胶板主要尺寸和标记 |
China National Standards SiO |
English PDF |
| GB/T 6981-2003 |
Test methods for water vapor transmisSiOn of rigid containers 硬包装容器透湿度试验方法 |
China National Standards SiO |
English PDF |
| GB/T 9792-2003 |
ConverSiOn coatings on metallic materials--Determination of coating mass per unit area--Gravimetric methods 金属材料上的转化膜 单位面积膜质量的测定 重量法 |
China National Standards SiO |
English PDF |
| GB/T 9791-2003 |
Chromate converSiOn coatings on zinc，cadmium，aluminium-zinc alloys and zinc-aluminium alloys--Test methods 锌、镉、铝-锌合金和锌-铝合金的铬酸盐转化膜 试验方法 |
China National Standards SiO |
English PDF |
| GB/T 5868-2003 |
Rolling bearings--Mounting dimenSiOns 滚动轴承 安装尺寸 |
China National Standards SiO |
English PDF |
| GB/T 19355-2003 |
Protection against corroSiOn ofiron and steel in structures--Zinc and aluminum coatings--Guidelines 钢铁结构耐腐蚀防护 锌和铝覆盖层 指南 |
China National Standards SiO |
English PDF |
| GB/T 19354-2003 |
Vitreous and porcelain enamels for aluminium--Determination of the adheSiOn of enamels on aluminium under the action of electrolytic solution (spall test) 铝搪瓷 在电解液作用下铝上瓷层密着性的测定(剥落试验) |
China National Standards SiO |
English PDF |
| GB/T 19353-2003 |
Vitreous and porcelain enamels--CorroSiOn tests in closed systems 搪玻璃釉 密闭系统中的腐蚀试验 |
China National Standards SiO |
English PDF |
| GB/T 19334-2003 |
DimenSiOn of low-voltage switchgear and controlgear--Standardized mounting on rails for mechanical support of electrical devices in switchgear andcontrolgear installations 低压开关设备和控制设备的尺寸 在成套开关设备和控制设备中作电器机械支承的标准安装轨 |
China National Standards SiO |
English PDF |
| GB 12045-2003 |
Specification of marine exploSiOn-proof light 船用防爆灯技术条件 |
China National Standards SiO |
English PDF |
| GB/T 5587-2003 |
Basic shapes，dimenSiOns，symbolsand notations of silver based electrical contacts 银基电触头基本形状、尺寸、符号及标注 |
China National Standards SiO |
English PDF |
| GB/T 3047.5-2003 |
Series of basic dimenSiOns of cabiners for vertical increment of 20mm 高度进制为20mm的台式机箱基本尺寸系列 |
China National Standards SiO |
English PDF |
| GB/T 3047.3-2003 |
Series of basic dimenSiOns of subracks and plug-in units for vertical increment of 20mm 高度进制为20mm的插箱、插件基本尺寸系列 |
China National Standards SiO |
English PDF |
| GB/T 19290.2-2003 |
Modular order for the development of mechanical structures for electronic equipment practices--Part 2: Sectional specification--Interface co-ordination dimenSiOns for the 25mm equipment practice 发展中的电子设备构体机械结构模数序列 第2部分: 分规范 25 mm设备构体的接口协调尺寸 |
China National Standards SiO |
English PDF |
| GB/T 3074.4-2003 |
Method for the determination of the coefficient of thermal expanSiOn of graphite electrodes 石墨电极热膨胀系数(CTE)测定方法 |
China National Standards SiO |
English PDF |
| GB/T 19292.4-2003 |
CorroSiOn of metals and alloys--Corrosivity of atmospheres--Determination of corrosion rate of standard specimens for the evaluation of corrosivity 金属和合金的腐蚀 大气腐蚀性 用于评估腐蚀性的标准试样的腐蚀速率的测定 |
China National Standards SiO |
English PDF |
| GB/T 19292.3-2003 |
CorroSiOn of metals and alloys--Corrosivity of atmospheres--Measurement of pollution 金属和合金的腐蚀 大气腐蚀性 污染物的测量 |
China National Standards SiO |
English PDF |
| GB/T 19292.2-2003 |
CorroSiOn of metals andalloys--Corrosivity of atmospheres--Guiding values for the corrosivity categories 金属和合金的腐蚀 大气腐蚀性 腐蚀等级的指导值 |
China National Standards SiO |
English PDF |
| GB/T 19292.1-2003 |
CorroSiOn of metals and alloys--Corrosivity of atmospheres--Classification 金属和合金的腐蚀 大气腐蚀性 分类 |
China National Standards SiO |
English PDF |
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