Perforated Screens fit all types of vibrating equipment and are being used extensively in the following industries: - Crushed Stone Quarries - Copper Mines - Clay, Asbestos and Gypsum - Iron Ore Mines - Sand and Gravel Plants - Slag Plants Phosphate Rock - Lightweight Aggregates - Coal Preparation Plants - Barite Extra Long Screen Life - Screens are heat-treated after perforating, for hardness and abrasion resistance. More Accurate Screening - Perforations remain uniform. - Choice of Square...Round...Hexagonal...Slotted Perforations. Excellent Screening Efficiency - Perforations are available in a variety of shapes to best suit screening requirements. - Perforations are staggered in the direction of the flow of material ensuring greater screening efficiency. Less Chance of Blinding -Perforations are slightly tapered to resist blinding and plugging. Metals Available: 1. Standard - Rockwell B85. Best for normal usage and high impact situations. 2. High Abrasion - Rockwell B240 Minimum. Best in high abrasion, lower impact situations. Work Hardens. 3. Other - Other metals available for special applications.