The main varieties of steel wire ropes in China are as follows:
1. Phosphate coated steel wire ropes (patented in China). After being phosphatized by manganese series and zinc-manganese series, the wear resistance and corrosion resistance of steel wire ropes have jumped in an all-round way, and it is not easy to wear and rust, which makes the fatigue life of phosphate coated steel wire ropes 3-4 times that of smooth steel wire ropes with the same structure (under comparable conditions in the laboratory), surpassing imported steel wire ropes, and phosphate coated steel wire ropes are completely replacing all kinds of smooth steel wires. It can also be used instead of galvanized steel wire rope with thin zinc layer after plating (the corrosion resistance can be tested by salt spray test). Because of its long service life, the average daily use cost is only 3-45% of that of smooth steel wire rope, and its quality stability and reliability are better.
2. galvanized steel wire rope, including hot dip galvanizing and electro-galvanizing. The thicker the galvanized zinc layer, the stronger the corrosion resistance. The thickness of the zinc layer is expressed in grams per square meter.
3. Stainless steel wire rope, mainly made of 34 or 316 stainless steel, has excellent anti-corrosion effect but is expensive
4. Plastic-coated steel wire rope and carbon steel wire rope are coated with polyethylene, polypropylene or nylon
5. Smooth steel wire rope has a short service life and the market demand is greatly reduced, which is being completely eliminated by phosphating coated steel wire rope.
for hoisting machinery used in atmospheric environment, manganese phosphating coated steel wire rope is preferred, hot dip galvanized-phosphating double-coated steel wire rope is preferred in heavy corrosive environment, and marine steel wire rope is preferred in seawater. Please note that the name of the wire rope, such as phosphating coated wire rope or 316 stainless steel wire rope, must be indicated in the purchase invoice to prevent illegal enterprises from infringing their legitimate rights and interests with counterfeit products. In addition, patented products are generally marked with the patent number on the outer packaging of the wire rope, and the warranty should have the main technical indicators, such as the type and weight of phosphating film (the phosphating film has an important impact on the service life of the wire rope, such as wear resistance and corrosion resistance), for reference only.