Galvanized steel plates are divided into ordinary electrolytic plates and fingerprint-resistant electrolytic plates. The fingerprint-resistant board is based on the ordinary electrolytic board and adds a fingerprint-resistant treatment, which can resist sweat. It is generally used on parts that do not undergo any treatment. The grade is SECC-N. Ordinary electrolytic plates are divided into phosphating plates and passivation plates. Phosphating is more commonly used, and the brand name is SECC-P, commonly known as p material. Passivation plates are available with or without oil. Nominal wall thickness of galvanized steel pipe (mm): 2.0, 2.5, 2.8, 3.2, 3.5, 3.8, 4.0, 4.5. Galvanized steel pipe coefficient parameters (c): 1.064, 1.051, 1.045, 1.040, 1.036, 1.034, 1.032, 1.028. Galvanized steel plate is a welded steel plate with a hot-dip or electroplated zinc layer on the surface. It is generally widely used in construction, home appliances, vehicles and ships, container manufacturi…