ANDRITZ METALS Sundwig produces various types of cold rolling mills for carbon steel, stainless steel and non-ferrous metals. Coiler of Rolling Mill during Rolling Process Cold Rolling Mills for reducing, coating, and fi...... ANDRITZ METALS Sundwig produces various types of cold rolling mills for carbon steel, stainless steel and non-ferrous metals. Coiler of Rolling Mill during Rolling Process Cold Rolling Mills for reducing, coating, and finish rolling (skinpass and temper rolling) on 12-high, 20-high, 2-high, 4-high, 2-high/4-high mills or combined 4-high/S-high mills, available as one-way, reversing or tandem mills.