The supplied Piercer Mill is a plant known as the piercing mill, which consists of a number of dies, of which, two primary contoured work rolls rotate in the same direction with their axes at 3 to 6 degree with respect to the horizontal stock plane. The process is also known as rotary piercing or seamless tubing. The mill includes a mill housing having a base, an open top and an open interior defined by a plurality of vertically extending mill posts and interconnecting side portions. The offered Piercer Mill is very efficient and made for commercial uses.