The pump crank is a vital component within pump spare parts, constructed from casted alloy steel using the water glass casting process. Known for its exceptional strength and durability, this crank undergoes a comprehensive manufacturing procedure. The process begins with investment casting to create intricate and precise geometries, followed by precision machining to meet exacting specifications. To achieve the necessary hardness and mechanical properties, the crank is further subjected to carbonization. Additionally, surface treatment is applied to enhance its overall quality. This meticulous approach results in a high-quality pump crank that ensures the reliable and efficient operation of pumps in various applications, where durability and mechanical performance are paramount.