Steel coil, also known as coil steel.
The steel is formed into rolls by hot pressing and cold pressing. In order to facilitate storage, transportation and various processing (such as processing into steel plates, steel strips, etc.). Formed coils are mainly hot rolled coils and cold rolled coils. Hot rolled coils are processed products before recrystallization of billets. Cold rolled coil is the follow-up processing of hot rolled coil. The general weight of steel coil is about 15-30T.
Spiral steel is a kind of deformed steel bars, which refers to ribbed steel bars with spiral transverse ribs on the steel surface, and also refers to deformed steel bars coiled together like wire rods, which can be cut as required.