標準號：BS 4449-2005+A2-2009
中文標準名稱：混凝土增強鋼.可焊接增強鋼.棒材、卷材和拆卷產(chǎn)品.規(guī)范
英文標準名稱：Steel for the reinforcement of concrete - Weldable reinforcing steel - Bar, coil and decoiled product - Specification
標準類型：H44
發(fā)布日期：2005/9/30 12:00:00
實施日期：2006/1/1 12:00:00
中國標準分類號：H44
國際標準分類號：77.140.15;91.080.40
引用標準：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
適用范圍：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.