Galvalume Steel Coil Slitting
- 55% Al + 43.5% Zn + 1.5% Si alloy coating for 2-6x stronger corrosion resistance than galvanized steel.
- Withstands temperatures up to 300℃; ideal for high-heat working conditions.
- Excellent formability: no coating peeling or cracking during bending, stamping & shearing.
- Sleek silver-grey metallic finish; perfect base for PPGL color coating with superior adhesion.
- Cost-effective alternative to aluminum & stainless steel with longer service life.
- Strict incoming inspection: thickness, coating weight & surface quality verification.
- Precision slitting with ±0.1mm width tolerance via adjustable circular knives.
- Edge deburring & flattening to ensure burr-free, straight & smooth strips.
- Customized coil winding (by length/weight) & seaworthy packaging for safe delivery.
- Building Hardware: Light steel keels, door/window frames, guardrail brackets.
- Home Appliances: Shells & inner supports of refrigerators, air conditioners & washing machines.
- Auto Parts: Door frames, trunk brackets & chassis components.
- Solar PV Mounts: 20+ years of outdoor service life in coastal/humid areas.
- Warehouse Racks: Load-bearing beams & columns for light/medium duty storage systems.
- Tailor-made slitting sizes to meet diverse industry requirements.
- Special edge treatment to prevent rusting after slitting; full-body corrosion protection.
- Burr-free, flat strips ready for secondary processing (bending, welding, stamping).
- Unbeatable cost-performance ratio vs. stainless steel & aluminum sheets.
- Versatile for both indoor & outdoor applications (coastal, high-temperature & industrial sites).
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Galvalume Slitting Quotation Template (By Application Scenarios)
1. Application Scenario: Solar PV Mounts (Optimal Parameter Combination)
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Parameter Category
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Specific Items
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Optimal Parameters
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Standard/Remark
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Basic Dimension
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Thickness
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0.8-1.2mm
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Adapt to outdoor load-bearing requirements
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Slitting Width
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80mm/100mm/120mm
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Customizable by bracket design
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Width Tolerance
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±0.08-±0.1mm (Precision Grade)
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Ensure welding accuracy
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Coil Inner Diameter
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508mm/610mm
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Universal for PV mount production lines
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Coating Parameter
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Coating Type
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AZ (55% Al + 43.4% Zn + 1.6% Si)
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Hot-dip aluminum-zinc coating
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Coating Weight
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AZ100-AZ150 (50-75g/m² per side)
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25+ years outdoor service life, salt spray test ≥1000h
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Mechanical Property
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Base Material Grade
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S350GD+AZ/S550GD+AZ
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Q/BQB 425 Standard
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Yield Strength
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≥350MPa (S350GD+AZ)/≥550MPa (S550GD+AZ)
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Resist wind load and deformation
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Elongation
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≥16%
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GB/T 228.1 Standard
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Slitting Precision
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Edge Treatment
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Deburring + Passivation
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Prevent edge rusting
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Flatness
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≤1.5mm/m
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Ensure bracket assembly accuracy
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Packaging
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Packaging Method
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Moisture-proof paper + Film wrapping + Steel strapping + Wooden pallet
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Seaworthy for export
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2. Application Scenario: Home Appliance (Refrigerator Back Panel/Air Conditioner Shell)
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Parameter Category
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Specific Items
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Optimal Parameters
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Standard/Remark
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Basic Dimension
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Thickness
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0.25-0.6mm (Ultra-thin)
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Reduce overall appliance weight
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Slitting Width
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600mm/800mm/1000mm
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Adapt to appliance mold size
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Width Tolerance
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±0.1mm
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Ensure stamping precision
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Coil Inner Diameter
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508mm
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Fit home appliance stamping lines
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Coating Parameter
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Coating Type
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AZ (55% Al + 43.4% Zn + 1.6% Si)
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Hot-dip aluminum-zinc coating
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Coating Weight
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AZ50-AZ80 (25-40g/m² per side)
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Meet indoor/outdoor anti-rust requirements
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Mechanical Property
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Base Material Grade
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DX51D+AZ/DX52D+AZ
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Q/BQB 425 Standard, suitable for cold forming
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Yield Strength
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250-340MPa
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Good stamping formability
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Elongation
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≥22%
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Avoid cracking during deep drawing
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Slitting Precision
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Edge Treatment
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Deburring + Flattening
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Prevent scratching during assembly
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Surface Finish
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Minimized Spangle + Chromium-free Fingerprint Resistant
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Eco-friendly, RoHS Certified
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Packaging
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Packaging Method
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Film wrapping + VCI paper + Wooden pallet
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Prevent surface scratch and rust
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3. Application Scenario: Construction (Light Steel Keel/Building Envelope)
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Parameter Category
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Specific Items
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Optimal Parameters
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Standard/Remark
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Basic Dimension
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Thickness
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0.6-2.0mm
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0.6-0.8mm for keel; 1.0-2.0mm for envelope
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Slitting Width
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50mm/75mm/100mm/120mm
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Customizable by construction design
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Width Tolerance
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±0.1-±0.15mm
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Meet cold bending forming requirements
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Coil Inner Diameter
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610mm
|
Universal for construction steel processing lines
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|
Coating Parameter
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Coating Type
|
AZ (55% Al + 43.4% Zn + 1.6% Si)
|
Hot-dip aluminum-zinc coating
|
|
Coating Weight
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AZ100-AZ150 (50-75g/m² per side)
|
20+ years service life in coastal/humid areas
|
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Mechanical Property
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Base Material Grade
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S250GD+AZ/S350GD+AZ
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Q/BQB 425 Standard, structural grade
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Yield Strength
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≥250MPa (S250GD+AZ)/≥350MPa (S350GD+AZ)
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Bear construction load
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Elongation
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≥16%
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GB/T 228.1 Standard, good cold bending performance
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Slitting Precision
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Edge Treatment
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Deburring + Rounded Edge (Optional)
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Safe for on-site construction
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Surface Finish
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Regular Spangle/Chromium-free Passivation
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Adapt to outdoor weather conditions
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Packaging
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Packaging Method
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Moisture-proof paper + Steel strapping + Wooden pallet
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Seaworthy, suitable for long-distance transportation
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