Wash -over milling fishing integrated tool

The utility model discloses a wash -over milling fishing integrated tool, axially extending bore's tool body is offered to the instrument including the center, wherein, tool body includes top connection, thread making salvage portion and the cover portion of milling that top -down connected gradually, internal diameter top -down is crescent in thread making salvage portion, and the inboard wall of reducer institute one -tenth tapering is 1: 15~1: 20, processing has the triangle -shaped internal thread on the inner wall of thread making salvage portion, the cover all has wolfram steel fragment layer along the circumferencial direction build -up welding on milling the inside and outside wall in a bottom, this wash -over milling fishing integrated tool simple structure, it adopts female coupling tap mode to salvage, and is easy and simple to handle, the back -off success rate high, is applied to and salvages the great fish of external diameter, coordinates corresponding fishing operation method to bore for one t