During the construction of a certain factory building, it is necessary to equip a cooling system for high-temperature equipment.In order to transport the circulating water with a flow of 37m3/h to the cooling bed and complete the cooling task of the material tray,it is necessary to select a suitable pump and pipeline. The pipeline route is preset according to the layout in the workshop. Through relevant theoretical calculation, the inlet pipe specification of the pump is selectedФ 102×4mm; the outlet pipe size isФ73×4mm; the pump model is ISGB65-12.5 (I). Finally pipeline design and pump selection are completed.