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The pinch leveler pinches and levels strip steel, and emphasizes on leveling the head and tail of strip steel, in order to prepare for butt welding. When the head and tail of strip steel passes, the upper leveling rolls hold down properly to reduce the space between upper and lower rolls, while during other time, the upper leveling rolls lift appropriately for slight leveling. The pinch roll pinches strip steel forward, clamps strip steel and sends into the leveler, and provides power for strip steel to move forward. The pinch leveler also plays a role of locating the head of strip steel at the butt welder.