The sword metal stairs refer to the stairs where the bottom of the stairs is actually placed between the main structure of the metal stairs. In other words, the stair structure is attached to the bottom of the stairs from the sides, and these structures can be metal sheets, iron beams, studs, or any other profile, and the bottom of the stairs can be all kinds of metal sheets, profiles, or grating sheets. to be Stair swords can be simple short swords, short box swords, long swords, patterned long swords, etc.