This International Standard specifies the requirements for the material and marking of single-piece metal blades for portable hand-held brush cutters as well as the basic dimensions and tolerances for saw blades for portable hand-held brush saws.
BS ISO 7113:1999 history
0000 BS ISO 7113:1999(2000)
1999BS ISO 7113:1999 Portable hand-held forestry machines - Cutting attachments for brush cutters - Single piece metal blades