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Rectifier roll is also called hole roll. The rectifier roll making the pulp flowing seems to regard the flowing going through two drilled plates, the flowing first goes into the roll center, and then split away in the radial direction. When the flowing went through the roll, it forms small vortex for tiny movement so that the fiber decentralized to better evenness.
Mostly roll material: stainless steel, opening ratio 30%~55%