1. Ordinary cold-rolled plate SPCC
SPCC refers to the continuous rolling of steel ingots by cold rolling mills into steel coils or sheets of required thickness. There is no protection on the surface of SPCC, and it is easily oxidized when exposed to the air. Especially in a humid environment, the oxidation speed is accelerated, and dark red rust appears. The surface should be painted, electroplated or otherwise protected during use.
2. Galvanized steel sheet SECC
The substrate of SECC is general cold-rolled steel coil, which becomes an electro-galvanized product after degreasing, pickling, electroplating and various post-treatment processes in the continuous electro-galvanizing production line. SECC not only has the mechanical properties and similar processability of general cold-rolled steel sheets, but also has superior corrosion resistance and decorative appearance.
⒊Hot-dip galvanized steel sheet SGCC
Hot-dip galvanized steel coil refers to the semi-finished product after hot-rolled pickling or cold-rolled, after cleaning, annealing, immersed in a molten zinc tank at a temperature of about 460 ° C, so that the steel sheet is coated with a zinc layer, and then quenched and tempered Leveled and chemically treated