How to run the gas pipeline on the roof of the shutter door?

There are two ways to walk the gas pipeline on the eaves with shutter doors: one is to push the shutter box directly to the bottom of the structural beam, that is, the pipeline cannot pass. The other is to fix the louver box at the bottom of an independent steel beam or other structure, which is equivalent to the method of the door lintel. There is a certain gap between the steel beam and the bottom of the structural beam, which can be separated or blocked by fire in the later stage, and can cross the pipeline, but it should be blocked by fire. The gas pipeline is a special pipeline for transporting combustible gas, and it is a kind of metal gas pipeline hose that replaces the traditional rubber hose with a snap mode, which can solve the defects of easy shedding, aging, insect bite and short service life of the rubber hose.