Brad-generally used for connection of wooden pieces, usually made of low carbon steel for it, simple processing, and low cost.
Material steel nails to be quenched in order to improve its strength and hardness, and relatively complex processing, production costs are high. Because of its hardness and high strength and can be used for metal connections, metal, brick and concrete connection.
Steel nails, hard texture. Its function is to nail in some quite hard on the other nails do not object. Because the material is much different than common nails, are special nails.
Hardness of cement nails is very large, thick and short, strong ability to achieve.