The utility model relates to a make production line that four -way reversing valve D took over belongs to tubular product processing processing technique field. The production line includes feeding system and processing forming system, the feeding system includes long tube material loading unit, saw cuts unit and clean unit, processing forming system includes two sets of above units that shape that carry out the shaping processing of independently processed to the nozzle stub section, it includes return bend unit and compound pipe end unit to shape the unit, be equipped with on the productionline and move a tub arm -and -hand system, move tub arm -and -hand system including being used for with the nozzle stub duan yizhi that saws out clean unit and the first manipulator unit of transferring according to the preface between the subelement and being used for the second manipulator unit with the pipe fitting through behind the cleaning distributes to according to preface samsara ground that each group shapes the unit and the subelement is transferred according to the preface within a definite time in this shapes the unit in clean unit. This manufacturing automation degree is high, and effectual its production efficiency and the flexibility of having improved, can be applied to manufacturing technical field such as air conditioner widely.