1. Look at the color of the table legs. Brown wooden legs are wooden ones, while silver or gold legs are steel ones.
2. Listen to the sound and hit the cue ball towards the side vault. A hard "dong" sound indicates a steel vault, and a "bang" sound indicates a wooden vault.
3. The leather of the billiard table with a wooden frame is relatively rough, while that with a steel frame feels more comfortable to the touch.
4. The base of a wooden warehouse is made of wood, while that of a steel warehouse is made of steel, and so on.
5. The simplest way is to check if the billiard table has steel plates.
