In the process of shipbuilding outfitting period accounted for the largest,which in the whole pipe outfitting.Due to the manufacturing accuracy of pipe fittings,the deformation of the total block and the installation error and other factors,Lead in pipe outfitting,adjusting pipes are widely used to realize the transfixion of the whole pipeline system,increase the workload of outfitting tube. In this paper,the problem of the adjusting pipe in the double bottom section closure of a series of LPG ships is anal...