The combination of a four-wheel semi-trailer mobile pump with a centrifugal open impeller pump offers a powerful and efficient pumping solution. This configuration provides numerous advantages, including high efficiency, a wide performance range, smooth operation, low noise, and easy installation and maintenance. It is suitable for transporting clear water or water-like liquids and can be adapted to handle hot water, oils, corrosive liquids, or media with abrasive particles. With applications in firefighting systems, industrial water supply, and hot water circulation, this equipment ensures reliable and efficient pumping performance. By choosing this combination, users can enhance productivity, reliability, and safety in their pumping operations.