After the humans learned to create and cast iron and steel smelting, learned, and include up to now learn to exercise on cold-rolled flat steel. Because at the beginning with good chemical and physical conditions, so this training technology can be widely used. But there is a problem in the output above is a little limited, but after the industrial revolution in the 18th century, above the steel has been fast development.
In the classification category above is of steel cold-rolled flat steel, it had better steel and cold-rolled flat steel on steel surface roughness is better, and the intensity of precipitation hardening stainless steel is relatively high, no longer need to be heat treated to get a higher strength.
Typically, cold rolled flat steel factory in cold rolled flat steel production will have a standard, based on the specific requirements of businesses adjust actual production capacity for cold-rolled production.