1. when the groove of checkered steel plate is bent, check whether the front is broken.

2. check whether the surface of the checkered steel plate is flat and smooth without ripple, bulge, shelter point and scratch.

3. drop butanone to identify the metal coating of fluorocarbon spraying on the outer wall panel, and drop xylene to identify the metal coating on the inner wall panel. Wipe off the reagent after 5 minutes to see if the bottom is exposed.

What do you need to know before you buy a checkered plate?

4. measure whether the checkered steel plate meets the international requirements. The inner wall plate is 3mm and the outer wall plate is 4mm or more, and the thickness must be 0.5mm.

5. check whether the material of checkered steel plate is adulterated.