This Standard specifies the hot-rolled steel plates and hot-rolled atmospheric corro-
sion resisting1) steel plates (hereafter referred to as "steel plates") having high yield
point or proof stress to be mainly used for bridges, that are imparted with characteris-
tically excellent weldability.
Note 1) The term "atmospheric corrosion resistance" means the protective
characteristics impervious to corrosion when exposed to the atmos-
phere in the natural environment.