HB series double-shell segmented multi-stage pumps are horizontal, multi-stage, radially split, double-shell, two-end supported centrifugal pumps. The impellers are arranged in series or back-to-back, and the pump body is supported by the center, which is API610 standard BB5 pump type. It is suitable for conveying high temperature, high pressure and clean medium, especially when conveying flammable and toxic medium, it is more reliable.