

Forming coil is mainly hot rolled coil and cold rolled coil. Hot rolled coil is the processed product before recrystallization of billet. Cold rolled coil is the follow-up processing of hot rolled coil. The general weight of steel coil is about 15-30T. China's hot rolling production capacity is expanding, there have been dozens of hot rolling production lines, and some projects will be built or put into operation. General users do not have uncoiling equipment or limited amount. Therefore, the subsequent processing of steel coil will be a very promising industry. Of course, at present the larger steel mills have their own unwinding and leveling projects. Surface quality is divided into two levels: Normal accuracy: thin oxide sheet, rust, rough surface due to the peeling off of oxide sheet and other local defects whose height or depth exceeds the allowable deviation are allowed on the surface of the steel plate.