This paper presents a complete case study for designing and manufacturing chain parts for scraper chain conveyor (SCC) for a real client (chicken’s dietary supplements company). The chain of the SCC is dilapidated due to joints and pins deterioration. The Productivity was reduced as a result of operating at low capacity load and repeated maintenance. The condition of chain was too worse and not able to be repaired. Furthermore, the chain was non-standardized. Therefore, a complete design is required to replace the damage parts of the chain. The design procedures are: (1) calculation of the expected loads that exert on the chain during operation, (2) selection of materials, (3) designing the different parts of the chain taking into account safety, assembly process and economic considerations. The final design was justified and validated. The SCC is working properly and safety under various load capacities.