The quality of helmets directly affects head safety. As an important item for head protection, both purchase and use should be paid attention to.

After the helmet is impacted, no matter whether there are cracks or dents, it cannot be used. So, if the helmet has not received an impact, can it be used forever? the answer is negative. Safety helmets will gradually become damaged during use, especially improper use and maintenance. Therefore, it is necessary to check regularly for cracks, dents, wear, etc. If abnormalities are found, they need to be replaced immediately and cannot be used.

Even if the above situation does not occur, the helmet cannot be used all the time, because the helmet has a shelf life. According to the GB2811-2007 national standard for safety helmets, the expired safety helmets cannot be used anymore. They need to go to the relevant department for random inspection and testing. They can be used only after passing the inspection. The most common use period of a plastic safety helmet is 3 years, and a fiberglass safety helmet is two and a half years. What needs to be reminded here is that the production date of the helmet is calculated from the date of completion of manufacture, so even if the helmet is not in use, there is a shelf life.