| 摘要 |
PURPOSE: An inspection box for facility is provided to prevent the excessive rotation of a cover and to make an inspector quickly inspect the facility by easily separating the cover. CONSTITUTION: An inspection box for facility comprises a body(21) and a cover(11). A gas piping accessory structure is installed in the body. The cover is coupled to the body to be opened and closed. The top of the body is opened. The body of which top is opened has a receiving space for receiving the gas piping accessory structure. An annular mounting sill(25) is formed on the inner circumference of the top of the body. Locking grooves(22) are formed in the mounting sill at a predetermined interval. Protrusions(24A,24B) are formed on the underside of the mounting sill on both sides of the locking grooves. Grooves(23) are formed on the mounting sill at a predetermined interval to couple a control ring. |
