Exactly located novel immersed pipe for construction

The utility model discloses a pile-forming device of a sinking pipe prefabricated steel concrete expanded bore pile in particular to a sinking pipe used for buildings, which is matched with various inking pipe prefabricated steel concrete expanded bore piles. The sinking pipe is formed bby a hollow tubular pipe body (1), a bottom and a metal pile head (4), wherein, the inside of the bottom is provided with a positioning groove (9) matched with the positioning steel feet of an excavation device, the front end of the metal pile head (4) is provided with a metal probe (7), and the metal probe is designed into a shuttle shape. Because the sinking pipe eliminates the guiding groove, the manufacturing cost can be reduced and the manufacturing art can be simplified, and the proportion between the tubular pipe body and the inner diameter of the bottom can be ensured. The positioning steel feet on the excavation and expanded bore device insert into the groove easily with exact positioning, stability and reliability, s