• GB 151-1999 tubular heat exchangers.pdf
• BS EN 14705-2005 热交换器.湿冷却塔热性能的评价和测量方法.pdf
• NF EN 934-2/IN1-2012 Admixtures for concrete, mortar and grout - Part 2 concrete admixtures - Definitions, requirements, conformity, marking and labelling.pdf
• EN 50561-1 2013 Power line communication apparatus used in low-voltage installations - Radio disturbance characteristICS - Limits and methods of measurement - Part 1 Apparatus for in-home use.pdf
• EN 13055 2016 Lightweight aggregates.pdf
• EN 12390-1 2012 Testing hardened concrete - Part 1 Shape, dimensions and other requirements for specimens and moulds.pdf
• BS EN ISO 683-5 2021 Heat treatable steels, alloy steels and free-cutting steels - Nitriding steels.pdf
• BS EN ISO 22476-1 2012 Geotechnical investigation and testing. Field testing. Electrical cone and piezocone penetration test.pdf
• BS EN ISO 17892-12 2018/A1 2021 Geotechnical investigation and testing. Laboratory testing of soil. Determination of liquid and plastic limits 岩土调查和测试 土壤的实验室测试 液体和塑料极限的确定.pdf
• BS EN ISO 1461 2009 Hot dip galvanized coatings on fabricated iron and steel articles. Specifications and test methods.pdf
• BS EN ISO 1452-2 2009 PlastICS pipingsystems for watersupply and for buriedand above-grounddrainage and sewerageunder pressure-Unplasticizedpoly（vinyl chloride）（PVC-U） Part 2 Pipes （ISO 1452-22009）.pdf
• 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
• 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
• BS EN 206 2013/A2 2021 Concrete. Specification, performance, production and conformity.pdf
• BS EN 1337-3 2005 Structural bearings - Elastomeric bearings.pdf
• BS EN 10300 2005 Steel tubes and fittings for onshore and offshore pipelines. Bitumen hot applied materials for external coating.pdf
• BS EN 10278 1999 Dimensions and tolerances of bright steel products.pdf
• BS EN 10277 2018 Bright steel products. Technical delivery conditions.pdf
• BS EN 10210-1 2006 Hot finished structural hollow sections of non-alloy and fine grain steels. Technical delivery requirements.pdf
• BS EN 10025-1 2004 Hot rolled products of structural steels. General technical delivery conditions.pdf