What is the meaning of the hot rolling process in stainless steel pipe fittings

Simply put, the process of heating the steel and controlling it above the recrystallization temperature for rolling is called hot rolling. The process of rolling below the recrystallization temperature, including normal temperature, is called cold rolling.
Hot-rolled steel has good plasticity and is easy to form. After forming, the steel has no internal stress, which is convenient for processing in the following processes. For example, steel bars for construction, steel plates for stamping, and steels for machining and heat treatment are all hot-rolled steels.
Cold rolled steel has the properties of cold work hardening. Because cold rolling has better mechanical properties, many directly used sheets of steel use cold rolled steel. Such as cold-rolled steel bars, cold-rolled twisted steel bars, cold-rolled steel wires, cold-rolled steel plates, etc.