Comifo beading machine,also called five grooving machine,pipe grooving machine The latest design in beading technology is now available. Designed to meet the requirements of SMACNA, this ductwork prep machine produces 5 beads on 4’ or 5’ centers. A convenient handwheel raises or lowers the top roller to set depth of bead. Model No.Max Coil WidthThickness RangeCBM-1.2*13001300mm0.4-1.2mm18 - 27 GaCBM-1.2*16001600mm More Detailed Pictures: