This standard specifies the main technical conditions and inspection methods for the design, manufacture and use of general portable light metal folding ladders to ensure the safety of users.
GB 7059.3-1986 history
2007GB 12142-2007 Safety requirements for portable metal ladders
1986GB 7059.3-1986 Safety standard for light metals portable stepladder
GB 7059.3-1986 Safety standard for light metals portable stepladder was changed to GB 12142-2007 Safety requirements for portable metal ladders.