Specification for designation of perforations in industrial plate screens
工业平板筛孔的命名规范
1984-09-28
BS 7579-1992
Specification for designation and nominal sizes of openings for woven wire cloth, perforated plate and electroformed sheet for industrial screens
工业筛网用编织丝布、穿孔板和电铸板开口的名称和标称尺寸规范