Serpentine tubes adopt automatic argon arc welding, which are performed X-ray real-time imagingto prevent unqualified welds from entering the bend process.
ZOZEN gasfired (oil-fired) organic heat carrier boiler adopts the three-pass circular coil tube structure, and the coil tube is produced by the fully automatic CNC coil tubes production line, which is once-forming and does not need to be re-formed.
