• EN 12390-3 2019 Testing hardened concrete - Part 3 Compressive strength of test specimens.pdf   
• BS EN ISO 15614-1 2017/A1 2019 Specification and qualification of welding procedures for metallic materials. Welding procedure test. Arc and gas welding of steels and arc welding of nickel and nickel alloys.pdf   
• ASTM E1606-20 用于电气目的的铜和铝重拉杆的电磁（涡流）检验标准实践.pdf   
• BS EN ISO 898-3 2018/A1 2021 Fasteners. Mechanical properties of fasteners made of carbon steel and alloy steel - Flat washers with specified property classes.pdf   
• BS EN 1337-6 2004 Structural bearings - Rocker bearings.pdf   
• BS EN1822-2-1998 High efficiency air filters （HEPA and ULPA）. Aerosol production, measuring equipment, particle counting statistICS.pdf   
• BS EN ISO 7093-2 2000 Plain washers. Large series - Product grade C.pdf   
• EN 746-2-2010 Industrial thermoprocessing equipment-Safety requirements for combustion and fuel handling systems.pdf   
• BS EN 1993-1-6：2007-中文版（钢结构壳体）.pdf   
• BS EN 17088-2021 侧帘通风系统 安全.pdf   
• BS EN 13445-1：2009 无燃烧压力容器 第1部分：概述.pdf   
• BS EN ISO 14732 2013 Welding personnel. Qualification testing of welding operators and weld setters for mechanized and automatic welding of metallic materials.pdf   
• BS EN IEC 60974-5 2019 Arc welding equipment. Wire feeders.pdf   
• ASTM D4206-96 （2018） Standard Test Method forSustained Burning of Liquid Mixtures Using the Small ScaleOpen-Cup Apparatus1.pdf   
• BS EN 10216-1 2013 Seamless steel tubes for pressure purposes. Technical delivery conditions. Non-alloy steel tubes with specified room temperature properties.pdf   
• BS EN 1118-1999 热交换器.冷却液制冷器.性能确定的试验方法.pdf   
• ISO-4892-1PlastICS -Methods of exposure tolaboratory light sources.pdf   
• ASTM D 86 - 16a Standard Test Method for Distillation of Petroleum Products and Liquid Fuels at Atmospheric Pre.pdf   
• EN 50173-2 2018 Information technology - Generic cabling systems - Part 2 Office spaces.pdf   
• BS EN IEC 61784-3-8-2021 工业通信网络 配置文件 第3-8部分：功能安全现场总线 CPF8 的附加规范.pdf   
• EN1994 组合结构设计规范（合集）Design of composite steel and concrete structures   
• BS EN 1822-5-2000 High efficiency air filters （HEPA and ULPA）. Determining the efficiency of filter element.pdf   
• EN 22553-1995(Welding Symbol)-欧标钢结构节点示意图   
• AASHTO T 106M/T 106-21 Standard Method of Test for Compressive Strength of Hydraulic Cement Mortar （Using 50-mm or 2-in. Cube Specimens）.pdf   
• BS EN 1092-1-2002 中文版 按PN标注的管、阀门、配件及其附件用圆形法兰 第1部分：钢法兰.pdf   
• EN 12390-1 2012 Testing hardened concrete - Part 1 Shape, dimensions and other requirements for specimens and moulds.pdf   
• EN 54 Fire detection and fire alarm systems 火灾探测和火灾报警系统（英文）.pdf   
• BS EN 751-2 1997 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water. Non-hardening jointing compounds.pdf   
• ASTM D 5210 - 92 standard Test Method forDetermining the Anaerobic Biodegradation of PlasticMaterials in the Presence of Municipal Sewage Sludge1.pdf   
• BS EN 206 2013/A2 2021 Concrete. Specification, performance, production and conformity.pdf   
• ASTM F1611-20 髓内钉的标准规格.pdf   
• BS EN 10025-1 2004 Hot rolled products of structural steels. General technical delivery conditions.pdf   
• BS EN 1092-2 1997 Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, PN designated - Cast iron flanges.pdf   
• BS EN 1992-1-1 2004/A1 2014 Eurocode 2 Design of concrete structures. General rules and rules for buildings.pdf   
• BS EN 1994-1-1：2004中文版（钢和混凝土组合结构设计）.pdf   
• BS EN 10088-1 2014 Stainless steels - List of stainless steels.pdf   
• BS EN ISO 14945-2021 小艇. 建造者铭牌.pdf   
• BS EN 1993-1-9：2005-中文版（钢结构疲劳设计）.pdf   
• BS EN 1995-1-1：2004-中文版（木结构设计）.pdf   
• ASTM F3543-22 与狩猎鞍有关的标准术语.pdf   
• BS EN IEC 60974-7 2019 Arc welding equipment. Torches.pdf   
• ISO ASTM 52942-2020 添加剂制造 鉴定原则 航空航天用激光金属粉末床熔合机和设备的合格机器操作员.pdf   
• BS EN 1994-2：2005-中文版（钢和混凝土桥）.pdf   
• EN 60754-1-2014 IEC 60754-1 2011 C1 2013 NEN-EN-IEC 60754-1 2014.pdf   
• BS EN 10217-1 2019 Welded steel tubes for pressure purposes - Technical delivery conditions. Part 1 Electric welded and submerged arc welded non-alloy steel tubes with specified room temperature properties.pdf   
• BS EN 60825-1-2014 Safety of laser products Part 1Equipment classification and requirements.pdf   
• BS EN 1993-1-11-2006中文版（钢结构受拉构件设计）.pdf   
• BS EN 1993-1-12：2007中文版.pdf   
• BS EN ISO 8503-3 2012 Part 3 Method for the calibration of ISO surface profile comparators and for the determination of surface profile — Focusing microscope procedure.pdf   
• ASTM D2487-17 Standard Practice for Classification of Soils for Engineering Purposes （Unified Soil Classification System）.pdf   
• BS EN 17483-1-2021 私人保安服务 关键基础设施的保护 第1部分：一般要求.pdf