More shared rolls, easy adjustment, good weld seam quality, rigid machine structure, easy operation and 711 Parameters Specification:Φ711×25Pipe Diameter:Φ224.5~Φ711mmPipe Thickness:4.0~25mmPipe Materials:Q235,Q345B,J55, X40-X80,H40,K55,N80Welding Speed:10~40m/minDesigning guidelineTo improve the serviceability and productivityTo meet safety requirements of multi-product small-batch productionTo ...