Low carbon steel plate is a kind of material that is used a lot, which is divided into ordinary low carbon steel plate and special steel plate, including low alloy high strength steel and corrosion and heat resistant laminated steel plate. Ordinary low carbon steel plate is divided into cold rolled and hot rolled two, cold rolled steel plate surface quality is good, thickness and size is accurate, and it is used for manufacturing body and so on. Hot-rolled plates are often used to make car frames.

Profile refers to a solid straight bar with a certain section shape and size after plastic processing of metal. There are many kinds and specifications of profiles, and they are widely used, and they play a very important role in rolling production.