One of the main stock materials of spring mattress production is bonnell spring. M-60 bonnell coil spiral machine transforms 2.2 and 2.4 mm steel wire into bonnell coil. It produces springs of 100mm-170 mm height and of 82-96mm spring diameter. It can be made suitable for spring production with 2mm wire for smaller diameters on user demand. The form and knot smoothness of the spring frame is increased thanks to the high-quality steel and diamond tools used on our machine, and also collapses on spring is minimized with thermo processing. Thanks to these features, M-60 Bonnell coil machine is preferred by many mattress manufacturers.