During construction work, it is impossible not to use fasteners and other products, which in the future can be very difficult to remove from the surfaces of the walls, floor or ceiling. As a rule, they include nails, screws, screws. Nails, as a rule, are made of steel or steel wire. When marking nails, the diameter and length of the nail is indicated. Nails are screw, threefold, corrugated. If the nails are subjected to heat treatment, these are hardened nails. They are made of steel, and they can even be clogged into brick or concrete. However, such nails are attributed to the category of fragile nails.
