Classification of steel coil:
1.Hot rolled steel coil,which is based on the slab (mainly Billet) as raw material, heated by a roughing mill and finishing mill group made of steel.From the last finishing mill stand out of the hot strip laminar cooling through to the set temperature, the coiling machine rolled strip steel roll cooled, according to the different needs of users with different finishing line (flat, straightening, transverse or longitudinal, inspection, weighing, packing and marking etc.) processing and become steel, flat steel product volume and slitting.
Material: Q235B, Q345B, SPHC, Q345A, Q345E
2.Cold rolled steel coil,used in the steel industry, different from the hot rolled coil. Refers to the room temperature directly roll into a certain thickness and the rolling machine roll of rolled strip. Compared to hot rolled coil, the surface of cold rolled coil is bright, smooth and bright, but it will produce more internal stress, often in cold rolling after annealing treatment.
Type:SPCC SPCD SPCE
3.Galvanized steel coil,Zinc coating is a surface treatment technology which refers to the surface of metal, alloy or other material to be plated with a layer of zinc. Now the main method is hot dip galvanized.
The production process: the original board preparation — pre plating treatment—hot dip plating—postprocessing—product inspection
4.Galvalume steel coil,structure compositionof aluminum zinc alloy, composed of 55% aluminum, 43% zinc and 2% silicon solidified at high temperature of 600 degrees C, and the whole structure is composed of aluminum iron silicon zinc, a kind of alloy which forms a dense four element crystal.
Postprocessing: DRY dry; OIL oiler; Chromate chromate; AFP/Galva clean antifingerprint; Non-Gr, Gr-free antifingerprint cd.
5.Color steel coil,coated with various colors of organic coating color steel.The use of hot dip galvanized steel strip as the substrate of the color coated steel strip in addition to the zinc layer protection, the zinc layer on the organic coating on the cover and protection, to prevent rust, the service life is long, about 1.5 times.With light weight, beautiful appearance and good corrosion resistance, color coated rolls can be directly processed, mainly used in construction industry, home appliance industry, electrical appliance industry, furniture industry and transportation industry.