What rope is used in commercial playground climbing nets?
The standard is 6-strand steel-cable-core rope, usually 16 mm or 18 mm diameter, with a galvanised or stainless steel cable core covered by polyester or UV-stabilised polypropylene. The steel core carries the structural load and limits stretch; the polymer outer provides grip and protects the cable. Rope without a steel core is not appropriate for commercial play structures.