Spangle-Free Galvanized Steel Coil
Spangle-Free Galvanized Steel Coil employs specialized processes (e.g., air-knife-controlled zinc flow) to suppress zinc crystallization, resulting in a uniform matte surface. With a controlled roughness (Ra) of 0.5–1.2μm (per GB/T 2518-2019), it offers optimal adhesion for post-processing like painting or electroplating.
+86 19163584547
+86 19163584547
+86 19163584547
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Product Description

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Smooth Surface Finish

The spangle-free galvanizing process delivers a uniform, smooth surface without zinc crystallization patterns. This structure minimizes grain boundary corrosion risks, making it ideal for high-precision applications (e.g., home appliances, automotive components) where surface defects could compromise coating adhesion.


Superior Corrosion Resistance
The zinc coating bonds firmly and distributes evenly on the steel substrate, effectively blocking oxygen and moisture to extend service life. In corrosive environments (e.g., coastal areas, industrial facilities), its performance far surpasses plain steel, proving ideal for outdoor applications like ventilation ducts and solar mounting systems.


Consistent Workability
During stamping, bending, or other cold-forming processes, the spangle-free galvanized coil maintains coating integrity, ensuring stable product quality. For instance, automotive-grade spangle-free galvanized steel retains both surface finish and anti-corrosion properties even after complex shaping processes.


Product NameSpangle-Free Galvanized Steel Coil
StandardGB,JIS,DIN,AISI,ASTM etc
GradeSPCC,SPCD,SPCE,ST12-15,DC01-06,Q195A-Q235A,Q195AF-Q235AF,Q295A(B)-Q345A(B) etc
Thick0.12-2mm or Customer needs customization
Width600-1500 mm or Customer needs customization
Length2000-12000mm or customized
Zinc Coating30-275g/m2,G30/G40/G60/G90/G120
Coil Weight3-5 Tons
HardnessSoft hard(HRB60),medium hard(HRB60-85),full hard(HRB85-95)
Surface TreatmentChromated/Non-Chromated, Oiled/Non-oiled, Skin pass
Payment TermsT/T, D/A, D/P, L/C, Western Union, MoneyGram or according to customer requirements
Regular Order25 tons or one container, for less quantity, to contact with us for details
MOQ3 ton
Delivery TimeUsually within 7 days, the time depends on the number of products.
PackingPlastic film + water proof paper + steel plate+ packing steel strip,Customer needs customization
ApplicationContainer Plate,Boiler Plate,Building materials,Flange Plateand so on


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Product Show

详情标题1-产品详情1


Our galvanized steel coils (GI) comply with ASTM A653, EN 10346, and JIS G3302 standards, featuring Z60-Z275 zinc coatings for superior corrosion resistance. Available in thicknesses ranging from 0.12mm to 4.0mm (±0.03mm tolerance) and widths of 600mm to 1500mm (custom trimming available), with surface treatment options including regular spangle, minimal spangle, or spangle-free. Widely used in roofing, automotive, and HVAC applications.


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详情标题1-产品详情2


Manufactured using continuous galvanizing lines (CGL) equipped with precision zinc coating control systems (air knife system with ±5g/m² accuracy) and advanced annealing processes (hydrogen atmosphere furnaces ensure formability). Integrated with online thickness monitoring and surface scanners for full-process quality control. Annual production capacity exceeds 500,000 metric tons, supporting custom coil weight, ID/OD specifications.


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详情标题1-产品详情3


In order to ensure product quality, we will arrange professional personnel to check product quality, packaging, weight, hardness, etc., according to customer requirements of product specifications, looking for high-quality and cheap cooperative factories in China, to provide customers with one-stop procurement services and quality assurance.


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详情标题1-产品详情4


Excellent packaging: waterproof paper and plastic film + iron cover + at least three strapping straps + strapping straps fixed on iron or wood pallets can effectively protect products from corrosion and various climate changes during transportation. Generally speaking, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. We have worked with many experienced shipping companies for a long time to find the most suitable mode of transportation for you.


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