Single-strand rope: also known as single-twist rope, which is made by twisting the rope-making steel wire around the central wire or hemp core, and can twist one or more layers of steel wires.

Double-twisted rope: It is made by twisting a double-stranded rope around the core (steel core or fiber core). It can twist one or more layers of steel wires. It is a widely used variety of steel wire ropes.

Three-twisted rope: Double-twisted rope is twisted around the core of the rope. It is mainly used for steel wire ropes with a diameter of 60mm or more.