| 摘要 |
PURPOSE: An auxiliary cap for a pipe is provided to simplify the structure of the cap by coupling the auxiliary cap to a connection pipe without a packing and to smoothly discharge water when a water leak is tested. CONSTITUTION: An auxiliary cap for a pipe opens and closes a connection pipe(2) of a pipe(1). The auxiliary cap is composed of a body(5). A screw part(4) of the body is screwed in a pipe hole. The pipe hole is exposed to the outside the connection pipe. Threads are formed on the inner surface of the pipe hole. A coating layer is integrally formed in the screw part using a dual injection method.
|
