Tower crane: tower crane, tower crane main hoist rope (tower crane wire rope, tower crane wire rope) use 6*19W-12.5mm, tower crane special rope is very many, the earliest is the most common variety: 6*19,6*37, high-end tower crane wire rope: 35W*7,18*7 (also called non rotation but expensive), 6*29Fi, but a lot of sites, but many sites The boss and the contractor have such complaints: the quality of the workers is too poor, not the use of the tower crane wire rope, including the other production equipment is the same, and the good tower crane wire rope is also a waste, but to buy ordinary rope 6*19,6*37 is not safe enough, and the durability is not enough, sometimes a project is not finished, rope is not finished. The son has changed several times, not knowing what to do, not only to consider the durability, but also to consider the cost. It is a common demand of the market. Here, the engineer strongly recommends 6*19W-12.5mm, Valen swallowing wire rope, to be a steel wire rope standard in Germany, the inner structure of the wire rope: line contact. The rope density is higher than 6*19,6*37, the breaking force is high, and the fatigue resistance is strong. The cost of the wire rope of the tower crane is lower than the high end rope, and the operation requirements of the workers are not high.