Do you install firewood in the door frame when installing the fire door? There is nothing related to the helium trace grams of grams of long-haun glory magic norms clearly can not or can. What is the specification number? (03j609 Atlas shows C20 cement mortar) Thank you more
The use of inorganic materials or refractories should be possible.
Since the implementation of the new fire door standard in 2008 after the implementation of the fire door (including the door frame filled) in the non-helium trace grams of the United States and the United States and the United States and the use of rock wool or aluminum silicate cotton and other harmful fiber filler The The relevant environmental requirements of the country also have the same requirements.
If there is no local norms, issued a separate request, then refer to the national standard atlas "fire doors and windows" to carry out; . the door frame to be filled with non-combustible materials, see note; . 30 album, filler C20 concrete
