Seven roll straightening machine is multi roll straightening for bar or tube whose original straightness is bigger and cant enter into peeling machine . Advantages: 1. Optimum straightening effect, even with high strength materials. 2. Rollers are adjustable to the desired position. Their hyperbolic shape ensures a long contact with the rod. 3. The machines can be offered with stepless variable speed. The speed can be adjusted smoothly . Our after sale-service is guaranteed. If necessary, we can dispatch our well-trained and professional engineers to our customer’s factories to help them with the machine installation and commissioning .