DOUBLE WALL PIPE CONNECTION STRUCTURE OF SCREW CONNECTION WAY

摘要

The present invention is of a rectangular or circular hole on the inside of forming a double wall pipe that one or a plurality of molding so that when a separate connector can be easily connected without the need for a double-walled tube ; More specifically, each screw is a double-walled tube is a separate connector which is a female thread and male thread integrally molded into both sides of the tube without the screw connected easily by a method which will bond to the expression after forming a drill hole, and a portion of the double wall pipe connection structure of the threaded connection for the closure member to be fed into the hole connected to leak off. ; The present invention is internally threaded portion 90 is screw-molded double-walled tube (70) to and forming a male screw portion 91 on the outer wall to one side of the double-walled tube 72 and the inner wall 71 of the other side; ; The double-walled tube the screw 70 is continuously connected to the threaded portion 90 and the male thread portion 91 for connecting to a drill which is formed on the outer side of the female thread (90) hole (D) and the; ; is the drill hole (D) is supplied through the filling which is characterized by the Sikkim closure member (B) in the molded hollow space (31).