... ~35tCoil ID: Φ760 mm; Material: Q235; Q345B; 2,Finished productRound pipe: 6 "~16"(Φ159~Φ406mm)Cut-to-length: 6~13.5mWelding ... ~35m/minIf solid state high frequency welder of 800kW is used, welding speed is estimated as follows: Designing guideline: To improve ... : More shared rolls, easy adjustment, high quality weld seam, sturdy machine frame, easy operation and maintenance. You are welcomed to visit ...