| 摘要 |
PURPOSE: A pipe assembly for drilling is provided to allow a user to rapidly perform a connection work of a pipe which is drilled during a drilling work by easily extending a length of the pipe assembly in a method in which an inner pipe is connected by being drawn from the inside of an outer pipe. CONSTITUTION: A pipe assembly (10) for drilling comprises an outer pipe (20), an inner pipe (30), a first connection socket (40), and a second connection socket (50). The outer pipe includes a first connection screw unit (21) and a second connection screw unit on the outer surface of both ends. The inner pipe is connected to the inside of the outer pipe to be able to slide and includes a first male screw unit (52) and a second male screw unit (32). The first connection socket includes a third connection screw unit (41) connected by corresponding to the first connection screw unit and a first female screw unit (42) connected to the first male screw unit. The second connection socket includes a fourth connection screw unit (51) connected by corresponding to the second connection screw unit and a second female screw unit (52) connected to the second male screw unit. |
