Common  nail  and steel nail the biggest difference lies in the use of the difference. Common Nails are generally used for wooden parts of the connection, it is made of General low-carbon steel, simple processing, low cost. The steel nail material can be quenched to improve its strength and hardness, processing relatively complex, high production costs. Because of its high strength and hardness, it can be used to connect metal parts, concrete, brick. APPEARANCE: Steel Nails are relatively thick, common nails are thin. The steel nails are usually galvanized, the color is dark white, the common nails are galvanized and not galvanized, galvanized color is generally relatively bright, there are also hot galvanized, the color is not so white, is also dark white or gray, but such are relatively thick, there are galvanized or passivated. Steel nails are steel wire products used to fasten objects. Widely used in industry, agriculture, construction, civil and other aspects, mainly used for the axial separation force smaller radial shear force is not large fixed objects, with simple processing, easy to use, nail fast and so on. The variety of steel nail is various, the shape is different, may choose according to the different use goal and the request. The main varieties are round nails, flat nails, flat head nails, riding nails, twist nails, nails, cement nails, nails, roofing nails, corrugated nails and so on. Product name has the general according to the shape, also according to the surface has a coating to distinguish (such as galvanized nails, polished nails, etc.) . The most widely used and most widely used is the general purpose ordinary round nail.