BS 4449-2005+A2-2009 混凝土增强钢.可焊接增强钢.棒材、卷材和拆卷产品.规范

标准号：BS 4449-2005+A2-2009
中文标准名称：混凝土增强钢.可焊接增强钢.棒材、卷材和拆卷产品.规范
英文标准名称：Steel for the reinforcement of concrete - Weldable reinforcing steel - Bar, coil and decoiled product - Specification
标准类型：H44
发布日期：2005/9/30 12:00:00
实施日期：2006/1/1 12:00:00
中国标准分类号：H44
国际标准分类号：77.140.15;91.080.40
引用标准：BS EN 1766-2000;BS EN 10020;BS EN 10080-2005;BS EN 10025-1;BS EN 10079;BS EN 12390-3;BS EN ISO 15630-1-2002
适用范围：This British Standard specifies requirements for ribbed weldable reinforcing steel used for thereinforcement of concrete structures. The standard covers steel delivered in the form of bars, coils anddecoiled products. The standard contains provisions for three steel grades, all of 500 MPa characteristicyield strength, but with different ductility characteristics. The three grades are B500A, B500B and B500C.The weldability requirements for all grades of steel are specified in terms of the chemical composition, andin particular the carbon equivalent value.Steel bars produced by re-rolling finished products, or by rolling material of which the metallurgical historyis not fully documented or not known, are not covered by this British Standard.NOTE Flash welds in lengths of bar are permissible under this standard, provided all the mechanical requirements are met.However, for some purposes, purchasers might specifically require bars without flash welds, and if so this ought to be stated at thetime of enquiry and/or order.