The internet has become the prime driver of contemporary E-commerce. E-procurement is important aspect of e-commerce where exchange of the information about the order is done. Data Interchange to the internet, the focus is still on the technology required to exchange information rather than supporting process crossing organizational borders. Selection of the supplier is the most important aspect of both the traditional EDI and B2B E-commerce. In this paper we design an workflow model of e-procurement for selection of the supplier is done by considering the traditional aspects of performance quality and performance analysis tool work flow ne a concept of Petri net.