In the precedence rigging of shipbuilding, most of the man-hour of rigging consists of piping work. Therefore it is important how the rigging of pipes is performed efficiently. Currently, all pipes which rigged in the engine room are distributed on the same working space in the target shipyard. There are two problems; One is the distributed pipes occupy a wide space to stock until installation, the other is it takes long time to find target pipes from distributed pipes. We propose a new system which divides the pipes into several groups considering the assembling order that skilled workers adopt. The number of the groups depends on the period of the piping works. Our system enables to reduce the burden of workers, reduce temporary space which placed pipes, and improve efficiency of the piping work. We show a demonstration of the proposed system through simulation using real ships' data.