标准号:IS 1726 Pt.7/Sec.2-1974
发布日期:1974/9/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:This standard (Part VII/Scc 2 ) lays down requirements of materials, dimensions, tolerances, weights and marking of light duty square type with double seal manhole covers and frames.