It is made from steel or stainless steel plate cold forming. For all types of machine tools to provide the appropriate type of guard rails (horizontal, vertical, diagonal, horizontal). According to the running speed rail steel shield structure is also different. Under the running speed of 10 m / min, equipped with poly resin or brass slider. Equipped with rollers under the medium speed 30m / min. Driver board, scraping plates and sucking board need to use a buffer system, the aim is to reduce the collision, noise and friction. The number of sections of the steel shield its proportions, weights and operating characteristics are important.