Zalieskis R. Integration of designing sheet steel products and their manufacturing processes : Master thesis of mechanical engineer / research advisor associate prof. habil. dr. A.Bargelis, Šiauliai university, department of technologic, department of mechanical engineering. – Šiauliai, 2006. – 38 p. Sheet steel is used wide in a modern manufacturing. In this paper I researched the work one of the factories manufacturing sheet steel products. It was analysed all manufacturing operations and equipment needed to make a box. I researched the designing of sheet steel products and their manufacturing processes on purpose to improve designing process. The designer can use results obtained from this paper and estimate outlay of newly designed product in early design stage. Scientific novelty of the work In this paper method of mathemamatical statistics was used and firstly created classificator of sheet steel products on purpose to estimate outlay of manufacturing.