HOT ROLLED (HR) FLAT PRODUCTS are produced by rolling of slabs/thin slabs at high temperature (Above 10000°C) in Hot Strip Mills (which produce plates) or in Hot Strip Mills (which produce strips). Hot Rolled Strips are cut into straight length to produce HR Sheets or Thin Plates.
COLD ROLLED (CR) STRIPS are produced by cold rolling of HR Strips in Cold Rolling Mills (normally at room temperature). CR Strips are cut to produce CR sheet. CR Strips/sheets are characterised by lower thickness, better/bright finish, closer dimensional tolerance and specific mechanical/metallurgical properties.