There is no manganese-based phosphating wear-resistant protective coating on the surface of the steel wire. It is a smooth steel wire rope. It is an obsolete product produced with backward technology. Of course, the smooth steel wire rope is not a famous brand. Which picture tube TV have you heard of? Famous brand? They have been eliminated. Phosphate-coated steel wire rope is an invention patent in China. Relevant information can be found on the website of the Patent Office of the State Intellectual Property Office. The patent rights for phosphate-coated steel wire rope belong to natural persons. That is to say, if a company wants to produce phosphate-coated steel wire rope, All steel wire rope manufacturers must obtain the patentee's permission before they can produce legally. All steel wire rope manufacturers must obtain the patentee's permission and pay patent fees before they can produce legally. Otherwise, they may be suspected of patent infringement and face huge financial compensation and administrative penalties. Fatigue test data proves that the fatigue life of manganese-based phosphating wear-resistant coated steel wire ropes is much longer than that of smooth steel wire ropes. It is the most advanced technology in the world's steel wire rope manufacturing industry. Phosphating includes many formulas. Among them, manganese phosphating has the strongest wear resistance and anti-corrosion capabilities. Manganese phosphating coated steel wire ropes can greatly improve the fatigue life of steel wire ropes. Manganese phosphating coated steel wire ropes have a longer service life. Longer and lower unit cost, it is an upgraded product for all types of smooth steel wire ropes. When purchasing manganese phosphate coated steel wire ropes, the main technical indicator is the weight of the manganese phosphate coating. Most of the phosphate coatings currently on the market are between 15-30 grams/square meter. The greater the weight of the phosphate coating, the more beneficial it is. To improve the service life, the phosphating coated steel wire rope with a film weight less than 3 grams/square meter is not a phosphating coated steel wire rope. It is recommended to call the company's sales manager and ask to see if they produce manganese-based phosphating wear-resistant coated steel wire ropes. It is certain that manganese phosphating wear-resistant coated steel wire ropes will replace smooth steel wire ropes.