First of all, according to the industry standard, the thickness of gusset plate should not be less than 1 mm: especially the products of pvc ceiling material manufacturers with decorative surfaces must meet this requirement. When purchasing, the user only needs to measure the wall thickness of the profile with a ruler.

Secondly, look at the roughness of the kerf and the inner surface of the plate: a good quality gusset plate has good strength and toughness. When sawing, there will be no cracks on the board surface and the inner rib, the kerf will be flush without burr cracks, and the cross section of the inner surface and the inner rib will be smooth without obvious bubbles. However, there will be burrs on the saw mouth of inferior pinch plate, cracks and cracks on the top and bottom of the plate, rough inner surface and many bubbles on the inner ribs.

The third is to take a pinch plate: grab it with both hands and bend it vertically and horizontally. If it is inferior pvc ceiling material, it is easy to break, while high-quality board will not, even if it is permanently deformed. This is the simplest and most effective way to check the internal quality of pinch plate.