An Uncoiler is the entry part of all coil processing lines. There are three main types of uncoilers: cone, single mandrel, and dual mandrel. Cone and dual mandrel uncoilers consist of two separate pieces on separate bases that slide into a coil’s ID to secure it. These are usually used for coils with higher thicknesses and weights. A single mandrel uncoiler is the most common type of uncoiler that you will see on slitting lines, cut to length lines, tube and pipe mills, galvanizing lines, multiblanking lines, pickling lines, and rollforming lines. A single mandrel uncoiler has a mandrel that expands and a hold down roll to secure the coil on it. A single mandrel uncoiler also usually has a sliding base to adjust material alignment in the line, a brake to keep tension, and a feed up drive to feed material into the rest of a line.