Our ceiling T grid are made of hot dip galvanized steel with a zinc coating, Its one of the most popular ceiling system,permits easy installation and maintenance / fire resistance/high strength and good looking. Main product and sizes: ceiling T grids (groove black line,flat,middle line concave, alloy butt ended ) 38H 32H main tee: 38(32)*24*3600mm cross tee: 26*24*1200mm cross tee: 26*24*600mm wall angle:24*24*0.4*3000mm Thickness: 0.23 - 0.35mm 1.Superposition joint part between main carrier and vice carrier or vice carrier and carrier is called point lap. 2.It uses lap structure to assembly, connection between joints dovetail very well. The joint face unknits and have a nice appearance. 3.There is a barb at the vice carrier joint, it can avoid loosing and falling from the infection of outside force. 4.Soleplate of main and vice carrier is zincification armor plate, which meets the national GB standard demand. We use baked paint zincifcation armor plate as baked paint panel,whoes capacity of zincification is high. It meet the national GB standard demand.