304L stainless steel rolls are stainless steel with low carbon content and are used in applications where welding is required. The lower carbon content minimizes the amount of carbide precipitated in the thermal impact zone close to the weld, while the precipitation of carbides may result in intergranular corrosion (weld erosion) of stainless steel in some environments.
304L stainless steel coil due to the existence of processing hardening phenomenon. So that the amount of deformation in the process of pulling the core rod can not give too much. And the heat loss is large. Therefore, it is necessary to take shape under the teaching of multiple fires. If the high temperature insulation stage is not handled well, it will cause coarse crystals.