An efficient and quick conveyance of heavy charges, as it is for instance requested in heat-treating shops, foundries ond forges, is realized by the heavy-duty belts. They are adapted to the specific application. Wether used in industrial furnaces at temperatures up to 1200°C ore in aggressive atmospheres where normal steel does not resist, the ROTHSTEIN heavy-duty belts do fit reliably to every use, also under the hardest conditions. Cross bar belts with spirals and lateral chain edges are for instance suited for thwe conveyance of charges with large surfaces. In case of big belt widths we recommand an additional central chain. A solid plate belt with chain edges too should be used when the belt is stressed in points.