High quality(pass ISO:2000)and reasonable price ceiling keel system products always do according to custsomer's demand. Detail information of the ceiling steel keel system as follows, pl feel free contact with me for more.Material: Q195,Q235GalvanizedHanger:D38,D50,D60 Main products: DU38,DU50,DU60,DC50,DC60,Baking ceiling keelBaking ceiling keel:minor groove plane baking keel,three-dimensional ...