The coating adhesion of the cast iron enamel pot is a very important parameter, which is related to the durability of the enamel pot. For the convenience of testing, we used a simple method to test the adhesion of surface enamel:
We use a 210g ball and make it freely fall from a height of 80cm. If the coating doesn’t drop off ot there is no cracks on the pot, then it’s qualified.
And if you have higher requirements, we also can do the test for you.