Keel is an indispensable part of the ceiling decoration, including wood keel and steel keel. Use wood keel to pay attention to wood must be dry. The use of steel keel, pay attention to the thickness of the keel is best not less than 0.6 mm. The ceiling metal keel is usually made of light steel and aluminum alloy. It has the characteristics of light weight, high rigidity, good fireproof and anti-seismic performance, and easy processing and installation. According to the profile section, there are U-type keel and T-type keel. In addition, the difference between the original plated galvanized keel and the rear galvanized keel is not easy to be noticed during the decoration. The original plated galvanized keel, commonly known as "snowflake board", has a snowflake-like pattern and is stronger than the later galvanized keel. Entrance decoration restaurant decoration aluminum decoration ceiling Waist Tape Measure,Retractable Measure Tape,Self-adhesive Tape Measure HENAN BONTHE MEASURING TOOLS. CO., LTD , https://www.tapemeasureb.com