This paper deals with knowledge integration duringproduct design. The design process is presentedbased on six phases: the initial,design,Implementation, Monitor Control Phase,Test Phase, and close phase, and the detailed designphase. Each is design to perform a major task within the project at pre-defined time. The phases are the guide of the project from start to finish. It provides a way for the project team and management to track the progress of the project. It also provides a detailed list on what is scheduled during each phase.