It is used to decorate non-load-bearing walls and building roofs
with light boards such as paper-faced gypsum board and decorative
gypsum board. It is suitable for the shape decoration of the roof
of a variety of buildings, the inner and outer walls of the
building and the basic material of the scaffolding ceiling.
According to the purpose, there are ceiling keels and partition
keels. According to the cross section, there are V-shaped,
C-shaped, T-shaped and L-shaped keels.