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840 Box Profile Metal Roofing Sheet Machine Roof Panel Roll Forming Machine. High-Grade Steel Construction: Rollers made of high-grade 45# steel with hard chrome plating for durability and stability. Precision PLC Control: Full PLC control with LCD touch screen for precise length and quantity settings. Customizable Design: Color, logo, design, and package can be customized according to customer requirements. Robust Cutting System: Servo tracking hydraulic shear with 60 HRC hard steel for burr-free cutting. Stable Frame Structure: 350# steel main frame and 20mm middle plate ensure machine stability without shaking. Versatile Coil Handling: Supports coil inner diameter 480-560mm and max outer diameter 1300mm with manual expansion.