A. The fact is not so, anything can play its real utility in a reasonable range, rivets are also so, the too thick wall will directly affect the riveting effect of rivets, lead to riveting not open or even deformation, thus affecting the performance of the whole product. B. General semi-hollow rivet wall thickness of 0.3-0.5mm is more suitable, aluminum rivet because of its soft material, can be appropriately thick. You can contact us for any details.