标准号:IS 7587 Pt.6-1984
发布日期:1985/5/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:Covers the requirements of safety detaching hook (4 plates type) used in cage suspension gear for winding in mines.1.1 It also covers top, bottom and lifting shackles and pins used with detaching hooks.