... , belt retractor, belt swinging mechanism, main drive mechanism, feed mechanism, machine body, clamp and electronic control system. belt specifications( girth × width ... ) mm (182-1250)×50Range of pipe bent mmφ≥63-600 L≤1500Surface roughness Ra≤0.1-0.4Power380V/220V/24VThe ... × width × high ) mm3500×1150×1700 2MA5260 precise surface Internal grinding machine