... 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, ... Head debender and straightener: 1 unit4. Shear and weld machine:1set5. Horizontal accumulator:1set6. Forming and sizing unit: 1 ...