Grade: Lockforming Quality (LFQ) GI Coil for HVAC Systems
Seam Performance: Excellent flexibility for 180 Pittsburgh lockseaming without zinc peeling.
Surface Finish: Bright regular spangle with vanishing DOS oil protection against condensation.
Quick Supply: Standard HVAC gauges (26, 24, 22 Gauge) ready for rapid container vessel booking.
Engineered as the ultimate base material for high-end paint lines and powder coating applications, our Zero-Spangle Galvanized Steel Coil features a completely smooth, crystal-free surface matrix. By utilizing advanced zinc bath cooling technology and specialized skin-pass rolling mills, we suppress zinc crystal growth, resulting in an exceptionally uniform surface free of spangle relief or surface roughness variations.Hot rolled galvanized steel, rolled galvanized steel, cold dip galvanized, hot rolled galvanized steel, rolled galvanized steel.
Backed by 30 years of manufacturing experience and 20 years supplying global coil coaters, our factory ensures the zinc surface is chemically ultra-clean, free of carbon residues, and processed with controlled surface micro-roughness . This delivers mechanical interlocking for paint primers, preventing micro-bubbling, paint peeling, or delamination in downstream PPGI manufacturing.Hot rolled galvanized steel, rolled galvanized steel, cold dip galvanized, hot rolled galvanized steel, rolled galvanized steel.
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Technical Parameter |
Specification & Manufacturing Range |
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Spangle Status |
Absolute Zero Spangle (Extra Smooth Surface) |
|
Surface Roughnes |
Smooth Surface |
|
Steel Grade |
DX51D+Z, SGCC, CS Type B |
|
Thickness Range |
0.10 mm – 3.50 mm |
|
Zinc Mass Range |
Z30 to Z600 |
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Surface Quality |
Grade B (FB) / Grade C (FC) high-grade finish |
|
Oil & Chemical Treatment |
Dry, Chromated, or Fingerprint-Resistant Organic Coating |


PPGI/PPGL Feedstock : Premium base substrate for continuous prepainted steel coil (Color Coated) production lines.
Home Appliances : Refrigerator side doors, freezer cabinets, washing machine housings, and air conditioner panel
Precision Metal Trim: Venetian blind slats, acoustic ceiling tiles, and high-end office furniture.
Packaged to ensure zero surface contamination or mechanical abrasion:
Non-Marking Wrapping: Smooth inner plastic wrapping to prevent friction marks on the zero-spangle surface
Reinforced Steel Shell: High-rigidity steel outer casing prevents outer layer coil deformation.
Rigid Skid Mounting: Standardized wooden skids ensuring zero ground moisture contact during warehouse storage.
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We provide global clients with stable supplies, rigorous quality control, and customized solutions. For inquiries or quotations, please contact us:
Sales Specialist : Ms. Lina
Email: lina@authsteel.com
Phone: +86-137 5206 8850
WhatsApp: +86-137 5206 8850
We will respond within two working hours with professional advice and a quotation.