A deterministic inventory model with constant demand and return on the base of economic order quantity (EOQ) is considered. We consider a firm that can manufacture new products and recover the value of a used product through remanufacturing with dismantling for parts. The firm provides product at a constant demand rate. Product consists of two parts. Each part is manufactured separately and placed in inventory, then two parts are assembled. The dismantling operation yields two spare parts. Products are returned according to the return rate, other products are disposed of. The returned product is dismantled for parts, any part is inspected whether it is usable or not and then is placed in inventory. Both parts are usable at the different rate. The usable parts are then remanufactured or directly reused, other parts are disposed of.