Because it is produced through applying Zn coat on both faces by hot dip process. It enjoys both the physical protective feature
and the electrochemical protective property of Zn.
>>Machinability: It can satisfy the processing requirements of rolling, coiling and others processes alike.
>>Thermal resistance: Common HDG steel plate normally works under 230℃, and has its color changed at 250℃, however, Galvanized
steel plate can sustain the environment at 315℃ for long time.
>>High reflectivity: Reflection ability of heat and light is twice as much as those of hot-dip zinc steel sheet, and its
reflectivity is more than 0.70, which is an ideal construction materials of saving energy
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Galvanized steel coil is to immerse a thin steel plate in molten zinc, so that a layer of zinc is attached to the surface. It is
an effective anti-corrosion method and can provide a long service life of metal materials.
A:surface General pattern: After galvanizing, the steel plate has no natural pattern formed by any treatment, also known as normal pattern. Fine pattern: reduce the lead content in the zinc solution or install a device for spraying zinc powder above the zinc tank to inhibit the growth of zinc flowers Ultra-smooth pattern: On top of the tiny pattern, it is quenched and tempered by a tempering machine, so that it can get a uniform and smooth surface on the surface.
B:Coil grades available: general grade, lock forming grade, structural grade, stamping grade
Normal spangle
Through addition of certain heavy metal element into molten zinc bath, regular spangle pattern is produced on Hot-dip zinc-coated steel sheet.
Minimized spangle
The zinc layer(coating) does Not contain Lead(Pb), which complies with EU WEEE and RoHS directives. This is a non-toxic and environmental friendly material.
Spangle-free
During hot-dip galvanizing, only a certain amount of aluminum is added to the zinc solution, and lead-free, antimony, and tin are not added to produce spangle-free products.
Galvanized steel coil products are mainly used in construction, light industry, automobile, agriculture, animal husbandry, fishery and other industries. Such as building roofs, highway guardrails, sheet metal processing, roof grilles, household appliance enclosures, ventilation ducts, chimneys, kitchen utensils, grain storage and transportation, frozen processing of meat and aquatic products, etc.
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