BS 4449:2005+A3:2016,Steel for the reinforcement of concrete – Weldable reinforcing steel – Bar, coil and decoiled product – Specification.BS 4449:2005+A3:2016 pdf free download.
BS 4449:2005+A3:2016 specifies requirements for ribbed weldable reinforcing steel used for the reinforcement of concrete structures. The standard covers steel delivered in the form of bars,coils and decoiled products. The standard contains provisions for three steel grades, all of 500 MPa characteristic yield 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, and
in particular the carbon equivalent value.
Steel bars produced by re-rolling finished products, or by rolling material of which the metallurgical history
is not fully documented or not known, are not covered by this British Standard.
6 Steelmaking and manufacturing processes
The melting process and type of deoxidation of the steel shall be at the discretion of the steel producer.
The manufacturing process for the production of coils and bars shall be at the discretion of the manufacturer. It shall be reported to the purchaser.
Decoiling of coil material shall be done by a machine made for this purpose.