... ,PIERCING MILL,HOT ROLL MILL,REDUCING MILL,STRAIGHTENER. 1.Hot rolling seamless pipe mill Typical production flow : ACCU-roll mill, ... ASSEL mill, MPM tandem rolling mill.2. Piercing mill Type: According to the piercing mill ... chain-drum.3.Hot roll mill Type: there are automatic rolling machine, continous rolling machine, Accr-roll machine, Assel mill, push bench ...