Assembling and welding method for container rudder cylinder

The invention relates to the technical field of ships, in particular to a container rudder cylinder assembling and welding method which comprises the following steps: step 1, determining an installation position on a ship section; the rudder cylinder to be installed is installed to the installation position; 2, determining the center line of the rudder tube; 3, a first welding point set is determined for the rudder tube, and a second welding point set is determined for the position, corresponding to the first welding point set, of the ship segment; fourthly, the center line datum is kept, and the first welding point set and the second welding point set are welded; the first welding point set and the second welding point set are welded through the multiple welding areas. According to the container ship rudder tube assembling and welding method, through reasonable preparation before welding, a reasonable welding method, selection of the welding position and setting of the welding sequence, the center line preci