Lehr Rolls, Pyrotek. Inc. Covered Furnace Rolls Lehr Rolls Pyrotek provides flat glass manufacturers with a range of materials suitable for covered and collared rolls. Non-asbestos Pyrotek millboard materials offer the smoothest, most durable millboard covered roll available to the industry. Precision-ground donut collared roll materials are available machined to your exact specifications.
Mandril shafts are also available.
Plus, Pyrotek offers stress relieving of existing shafts, roll straightening and journal repair, disposal of asbestos roll coverings, and precision-cut roll disks. The following is a list of other products available through Pyrotek.