This part of ISO 1005 specifies requirements for the manufacture and supply of rolled or forged wheel centres for tractive and trailing stock, which are suitable for tyring and are made of unalloyed steels in accordance with table 1 and clause 4. Spoked wheel centres are not covered by this part of ISO 1005. 1.2 The quality requirements for tyres are given in ISO 1005/1 and the quality requirements for forged and rolled wheel centres are given in this part of ISO 1005. Quality requirements for cast wheel centres, if required, shall be subject to agreement between purchaser and manufacturer. 1.3 In addition to this part of ISO 1005, the requirements of ISO 404 are applicable.