Selection of puncture-proof safety shoes

According to "Safety Shoes Against Puncture" (GB12017-1989), safety shoes against puncture are made by placing steel sheets above the soles to prevent sharp objects from penetrating the soles and causing injuries to workers' soles. Puncture-proof safety shoes are used to protect the soles of feet and prevent them from being stabbed by various sharp and hard objects. They are mainly used in mining, machinery, construction, metallurgy, logging, transportation and other industries. Because the hardness of the steel nail is HRC52 and the diameter is 4. SMM is 25mm, the tip diameter is/kloc-0 1mm±0.02mm, the length is 60-70mm, it penetrates the sole at 25mm/min, and the puncture resistance is greater than or equal to 780N. Stacking in the workplace, such as operating mechanical equipment, transportation equipment, using materials and tools, may cause the danger of nails, metal chips or other sharp objects stabbing and cutting the soles of workers, and the injury situation is the same as that of mechanical trauma. Industries and jobs in contact with machinery and tool materials are extremely common. In addition to the machinery industry, other industries have similar injuries, such as transportation and warehousing.