Is pickling classified as cold rolling or hot rolling?
Is cold forming classified as cold rolling or hot rolling?
Is hard rolling the same as cold rolling?
These are the tortures that hit the soul in trade. Confusing categories can easily lead to trade risks and disputes and claims.
Product definition
When analyzing the varieties, the first thing to clarify is the definition of these products. These common names usually refer to low carbon steel coils:
Pickling: usually refers to products in which hot-rolled steel coils undergo a pickling unit to remove surface oxide scale.
Hard rolling: usually refers to the hot-rolled steel coil that has been pickled and then thinned by a cold rolling mill, but has not been annealed.
Cold rolling: usually refers to the product of hard rolled coils that have been completely or incompletely annealed.
Cold forming: usually refers to hot-rolled pickled thin strip produced through ESP continuous casting and rolling process.
The term "cold forming" is explained in this way in the ESP product manual and technical standards of Rizhao Steel Plant.
