The full name should be \"continuous hot dip galvanized sheet steel\".
Continuous hot dip galvanized sheet steel and steel strip
1. Complete mark: Dimensions (thickness × width × length)
0.7×700×2000 - jy-275-z-y - b gb \/ t 2518-1988
2. Usually marked:
Hot-dip galvanized steel plate 0.7 -- JY -- 275 GB 2518-1988
3. Simplify labeling:
Hot-dip galvanized steel plate 0.7-JY-275
4. Specification range: (thickness × width × length)
(0.25~2.5) ×(700~1500) ×(1000~6000)
Continuous hot dip galvanized thin steel sheet referred to as galvanized sheet or sheet iron sheet, is a thickness of 0.25~2.5mm cold rolled continuous hot dip galvanized thin steel sheet and steel strip, steel strip first through the flame heating preheating furnace, burn the surface residual oil, while generating iron oxide film on the surface, and then enter the reduction annealing furnace containing H2, N2 mixed gas heating to 710~920℃, The iron oxide film is reduced to sponge iron, the surface activated and purified strip steel is cooled to a temperature slightly higher than that of molten zinc, and enters the zinc pan at 450~460 ° C, and the surface thickness of the zinc layer is controlled by an air knife. Finally, it was passivated by chromate solution to improve the resistance to white rust.
The surface of the steel plate is beautiful, there are blocky or leaf plated crystal patterns, and the coating is firm, and has excellent atmospheric corrosion resistance, at the same time, the steel plate has good welding performance and cold processing molding performance. Compared with the electrogalvanized sheet surface, its coating is thicker, mainly used for the metal plate requiring strong corrosion resistance.
Applicable grades: Zn100-PT, Zn200-SC, Zn275-JY
Structure classification code: Z-normal zinc flower: zinc flower obtained by crystallization at normal cooling speed, can be used for general purposes: X-small zinc flower: cooling speed is specially controlled, zinc flower size is smaller than normal zinc flower, suitable for painting and other occasions where normal zinc flower does not meet the requirements; Gz-finished zinc flower: Small zinc flower after finishing treatment, suitable for deep drawing and ultra deep drawing processing and surface roughness requirements low occasions.
Processing performance code: PT- general purpose, JY- Mechanical bite, SC- deep drawing, CS- Super deep drawing, JY- Structure.
Zinc weight code: Z100, Z200, Z275; The weight of the galvanized layer refers to the total amount of zinc contained on both sides of the steel plate, expressed by the number of grams of zinc contained on the steel plate per square meter (g\/m2), such as Z100 means that its zinc content is not less than 100g\/m2.
Marking example: zinc layer weight 275g\/m2, processing performance JY, surface structure Z, surface treatment Y, dimensional accuracy B, length × width × height 0.70mm×700mm×2000mm steel plate marked as:
Steel plate: 275-JY-Z-Y-B-0.70×700×2000-GB2518-81.
Sheet iron, the full name should be \"continuous hot dip galvanized sheet steel\".
The full name should be \"continuous hot dip galvanized sheet steel\". 1. Complete mark: Dimension (thickness × width × length) 0.7×700×2000 -- JY -- 275 -- Z -- Y -- B GB\/T 2518-19882. Usually marked: hot-dip galvanized steel plate 0.7 -- JY -- 275 GB 2518-19883. Simplified marking: hot-dip galvanized steel plate 0.7-JY-2754. Specification range: (thickness × width × length) (0.25 ~2.5) ×(700 ~ 1500) ×(1000 ~ 6000) continuous hot dip galvanized thin steel sheet referred to as galvanized sheet or sheet iron sheet, is the thickness of 0.25~2.5mm cold rolled continuous hot dip galvanized thin steel sheet and steel strip, steel strip first through the flame heating preheating furnace, burn the surface residual oil, At the same time, the iron oxide film is generated on the surface, and then it is heated to 710~920℃ in the reduction annealing furnace containing H2 and N2 gas mixture, so that the iron oxide film is reduced to sponge iron, the surface activated and purified strip steel is cooled to a temperature slightly higher than the molten zinc, and it is entered into the zinc pan at 450~460℃, and the surface thickness of the zinc layer is controlled by an air knife. Finally, it was passivated by chromate solution to improve the resistance to white rust. The surface of the steel plate is beautiful, there are blocky or leaf plated crystal patterns, and the coating is firm, and has excellent atmospheric corrosion resistance, at the same time, the steel plate has good welding performance and cold processing molding performance. Compared with the electrogalvanized sheet surface, its coating is thicker, mainly used for the metal plate requiring strong corrosion resistance. Applicable grade: Zn100-PT, Zn200-SC, Zn275-JY Structure classification code: Z-normal zinc flower: zinc flower obtained by crystallization at normal cooling rate, can be used for general purposes: X-small zinc flower: cooling rate is specially controlled, zinc flower size is smaller than normal zinc flower, suitable for painting and other occasions where normal zinc flower does not meet the requirements; Gz-finished zinc flower: Small zinc flower after finishing treatment, suitable for deep drawing and ultra deep drawing processing and surface roughness requirements low occasions. Processing performance code: PT- general purpose, JY- Mechanical bite, SC- deep drawing, CS- Super deep drawing, JY- Structure. Zinc weight code: Z100, Z200, Z275; The weight of the galvanized layer refers to the total amount of zinc contained on both sides of the steel plate, expressed by the number of grams of zinc contained on the steel plate per square meter (g\/m2), such as Z100 means that its zinc content is not less than 100g\/m2. Marking example: zinc layer weight 275g\/m2, processing performance JY, surface structure Z, surface treatment Y, dimensional accuracy B, length × width × height 0.70mm×700mm×2000mm steel plate is marked as: steel plate: 275-JY-Z-Y-B-0.70×700×2000-GB2518-81.