The most common designs of steel wire rope used in lifting equipment are:
114-wire rope with a fibre core (diameter: approx. 3 to 8 mm)
216-wire rope with a fibre core (diameter: approx. 6 to 60 mm)
133-wire rope with a steel core, intended for hot environments.
265-wire rope with a steel core, intended for hot environments.
144-wire rope for use in shipping and disposable slings.
Further, the nominal breaking strain of individual wires in ropes must be 1770 N/mm2. The minimum wire filling in ropes must be 0.40.
Soft Lifting Equipment
Round slings consist of an endless load-bearing sling made of polyester fibre, protected from dirt and wear with a single- or double-layered cover of polyester fabric. There are two types of covers; sideseam with double cover which give a stiffer roundsling and the seamless for softer version.
Endless Webbing Slings