BS EN 50134-5-2021 报警系统 社会报警系统 第5部分：互连和通信.pdf PDF 13.73MB 27页 EN 12390-1 2012 Testing hardened concrete - Part 1 Shape, dimensions and other requirements for specimens and moulds.pdf PDF 1006.13KB 18页 NF EN 197-1-2012 Cement - Part 1 composition, specifications and conformity criteria for common cements - Ciment.pdf PDF 544.82KB 42页 BS EN ISO 9015-1 2011 Destructive tests on welds in metallic materials. Hardness testing. Hardness test on arc welded joints.pdf PDF 883.79KB 24页 EN 12390-15 2019 Testing hardened concrete - Part 15 Adiabatic method for the determination of heat released by concrete during its hardening process.pdf PDF 751.84KB 18页 BS EN 10088-1 2014 Stainless steels - List of stainless steels.pdf PDF 1.71MB 72页 BS EN 50525-2-81 2011 Electric cables - Low voltageenergy cables of rated voltagesup to and including 450/750 V（U0/U） Part 1 General requirements.pdf PDF 864.86KB 18页 BS EN 1092-1-2007 法兰及其连接 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Flanges and their joints - Circular flanges for pipes valves fittings and accessories PN designated - Part 1 Steel flanges.pdf PDF 3.57MB 126页 BS EN 1092-3 2003 Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, PN designated - Copper alloy flanges.pdf PDF 565.19KB 38页 BS EN 10311 2005 Joints for the connection of steel tubes and fittings for the conveyance of water and other aqueous liquids.pdf PDF 334.21KB 30页 EN 13055 2016 Lightweight aggregates.pdf PDF 1.93MB 54页 BS EN IEC 60974-11 2021 Arc welding equipment - Electrode holders.pdf PDF 849.64KB 22页 BS EN 10277 2018 Bright steel products. Technical delivery conditions.pdf PDF 1.11MB 56页 BS EN ISO 2063-2 2017 Thermal spraying. Zinc, aluminium and their alloys - Execution of corrosion protection systems.pdf PDF 2.59MB 48页 BS EN 1337-4 2004 Structural bearings - Roller bearings.pdf PDF 355.24KB 34页 BS EN 1822-5-2000 High efficiency air filters （HEPA and ULPA）. Determining the efficiency of filter element.pdf PDF 391.52KB 24页 BS EN 681-1 1996 Elastomeric seals. Material requirements for pipe joint seals used in water and drainage applications. Vulcanized rubber.pdf PDF 782.47KB 24页 BS EN 1337-2 2004 Structural bearings - Sliding elements.pdf PDF 1.43MB 74页 BS EN 50525-1 2011 Electric cables. Low voltage energy cables of rated voltages up to and including 450-750 V （U0-U）. General requirements.pdf PDF 1.02MB 38页 BS EN 1337-3 2005 Structural bearings - Elastomeric bearings.pdf PDF 1.13MB 98页 BS EN ISO 22476-1 2012 Geotechnical investigation and testing. Field testing. Electrical cone and piezocone penetration test.pdf PDF 1.26MB 46页 BS EN ISO 7093-2 2000 Plain washers. Large series - Product grade C.pdf PDF 110.94KB 14页 NF EN ISO 17892-3-2015 Geotechnicalinvestigation and testing -Laboratory testing of soil-Part 3 determination of particle density.pdf PDF 5.18MB 26页 BS EN 10025-5 2019 Hot rolled products of structural steels - Technical delivery conditions for structural steels with improved atmospheric corrosion resistance.pdf PDF 964.23KB 40页
