(1) Surface condition: The surface condition of the galvanized sheet is different due to the different treatment methods in the coating process, such as ordinary spangles, fine spangles, flat spangles, zinc-free and phosphated surfaces. German standards also provide for surface grades.
(2) The galvanized sheet shall have a good appearance, and shall not have defects harmful to the use of the product, such as no plating, holes, cracks and scum, excessive plating thickness, scratches, chromic acid dirt, white rust, etc. Foreign standards are not very clear about specific appearance defects. Some specific defects should be listed in the contract when ordering.
