This station is to seal and weld the taper after transfer from bending station. The welding seam also single weld and double sides forming,which reduces the welding seam inside of the tank, reduces the labor intensity of the personnel, and regulates the tank welding effect, etc. The station adopts single side opening plate automatic welding machine. Take the taper into the automatic welding machine from the opening end, position the welding seam, lock the pressing beam, and start the pressing plate on both sides of welding seam. The welding walking trolley start, and start welding. After the welding machine is completed, the mechanisms are reset, the opening of the automatic welding machine is opened, the taper is taken out from the opening, and transported to the next process. Figure 7