Design and manufacture of necking-in machine CNG flow-forming necking-in machine designed and manufactured by our company has following advantages: Control system is stable and reliable; Programming, commissioning, operation and maintenance are quick and convenient. The stability and reliability can meet the requirements of the necking-in process for all types of cylinders. Description: The motor of the spinning machine is Hydraulic Servo Motor. Cylinder Feeding and unloading are controlled by PLC. Spinning machine for metallic liner: Necked in by programmable control, automatic loading and unloading through hydraulic pressure. Spinning machine for metallic cylinder: Necked in by programmable control, automatic loading and unloading through hydraulic pressure. Operation Time: 1 cylinder per 5 minutes Operation Diameter: Max. 420mm Power: 80 KW Specification: Length: 12m Width: 2.5m Height: 7m Weight: 8T Fuel: Oxygen and Propane Rotating Speed: 300r/min