This article describes the practical application of computer simulation of the manufacturing system. The field of modelling and simulation is as diverse as a group of people. Each discipline has developed or is developing its own models and their own approaches and tools for exploring these models. The simulation includes generating and observation of artificial history of system, whereby is possible to derive conclusions concerning the operating characteristics of a real system that is represented by the simulation. In this article is an example of the practical application of simulation approach for simulating the transport of semi-finished products on pickling line.