(d) Metallic Belt Conveyor: This is a flat belt conveyor where the flexible belt is replaced by a cold rolled carbon or stainless steel strip belt of thickness from 0.6 mm to 1.2 mm. The ends of the steel strip are lap joint riveted with a single row of special wide flat head rivets. A steel belt runs flat on cylindrical idlers or runs troughed on resilient idlers (made by suitable length of springs). Apart from all rolled strip steel belts, wire-mesh, belts of different designs have been used. The entire length is made up of short length sections. One of the designs is made up of flat wire spiral sections, shown in Fig. 6.1.4. The wire-mesh belts are more flexible and the design considerations are similar to a rubberized textile belt conveyors