Q355+AZ Galvalume Steel Coil | High Strength Aluzinc GL Coil

Galvalume Steel Coil - GL Galvalume Steel Coil - GL

Q355+AZ Galvalume Steel Coil | High Strength Aluzinc GL Coil

  1. High yield strength ≥355MPa for heavy load structural applications
  2. Aluzinc 55% Al-Zn coating for long anti-corrosion outdoor lifespan
  3. Equivalent cross standard: GB Q355+AZ, EN Q355+AZ, ASTM SS Grade50
  4. Reduce material thickness while maintain load capacity, save raw material cost
  5. Custom slitting, cut sheet and multiple surface treatment options
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Product Overview

Q355+AZ Galvalume Steel Coil is high strength structural aluzinc GL coil under GB/T14978 and EN10346 standard. It uses low alloy high strength steel substrate with hot-dipped 55% Al-Zn-Si alloy coating. Q355+AZ grade has minimum yield strength ≥355MPa, for heavy load structural projects.

Coating weight AZ50~AZ200g/m², available surface options: passivation, chromium-free passivation, anti-rust oil and anti-fingerprint AF treatment. Thickness range 0.18–2.5mm, mainstream thickness 0.2–1.5mm, standard widths:914,1000,1219,1250mm. Custom slitting narrow strip and cut-to-length sheet service available.

Q355+AZ aluzinc coil owns high mechanical strength, allows thinner gauge design to reduce overall weight and material cost for heavy load structure. Widely applied in heavy-duty photovoltaic brackets, large span building frames, heavy load wall support, industrial equipment structural frame, agricultural silo support. Aluzinc coating provides superior corrosion resistance for long-term outdoor exposure. MTC certificate can be supplied.

Galvalume Steel Coil - GL

Chemical & Mechanical Property Snapshot

Grade Standard C Max (%) Mn Max (%) P Max (%) S Max (%) Yield Strength Rp0.2 (MPa) Tensile Strength Rm (MPa) Elongation A80 (%)
Q355+AZ GB/T14978 & EN10346 0.20 1.60 0.040 0.040 ≥355 470–630 ≥21
Equivalent SS Grade50 ASTM A792 0.20 1.60 0.040 0.040 ≥355 470–630 ≥21

Detailed Technical Specifications

Specification Item Available Specification
Product Name Q355+AZ Galvalume Steel Coil
Alternative Name Q355+AZ High Strength Structural Aluzinc GL Coil
Manufacturing Process Hot-dip 55% Al-Zn-Si coating on Q355 low alloy high strength steel substrate
Coating Composition 55% Aluminum / 43.4% Zinc / 1.6% Silicon
Applicable Standards GB/T14978, EN10346, ASTM A792/A792M
Grade Q355+AZ
Equivalent Grades ASTM SS Grade50
Thickness Range 0.18–2.5 mm
Mainstream Thickness 0.2–1.5 mm
Standard Widths 914 / 1000 / 1219 / 1250 mm
Coating Weight AZ50, AZ70, AZ100, AZ150, AZ200 g/m²
Surface Treatment Passivation / Chromium-Free Passivation / Oil-Based Anti-Rust / Anti-Fingerprint AF
Standard Coil Inner Diameter 508 mm
Processing Options Slitting into narrow strips, Cut-to-length flat sheets
Quality Documentation Mill Test Certificate (MTC), third-party inspection available
Packing Waterproof paper + galvanized steel strap + seaworthy export wooden pallet
MOQ 5 Ton
Payment Terms T/T, L/C at Sight
Delivery Time 7–15 working days after receiving deposit

Product Comparison Table

Specification / Feature Q355+AZ Galvalume Steel Coil Equivalent Grade Cross Reference Buyer Selection Consideration
Common Name Q355+AZ High Strength Aluzinc GL Coil GB:Q355+AZ; EN:Q355+AZ; ASTM:SS Grade50 High strength structural grade for heavy load structure
Base Material Q355 low alloy high strength steel substrate High strength structural steel High yield strength for heavy load support
Coating System 55% Al +43.4% Zn +1.6% Si Aluzinc alloy coating Outdoor long-term corrosion protection
Standards GB/T14978, EN10346 ASTM A792/A792M Suitable for heavy load global construction & PV projects
Thickness 0.18–2.5 mm 0.2–1.5mm mainstream Can use thinner gauge to reduce material cost
Width 914 /1000 /1219 /1250 mm Slit narrow strip available Custom width for heavy structural roll forming
Coating Weight AZ50~AZ200 g/m² AZ100+ recommended for coastal heavy load PV project Higher AZ weight for salt fog & harsh environment
Surface Treatment Passivation / Cr-Free Passivation / Oil / Anti-Fingerprint AF AF prevent fingerprint marks Suitable for manual handling during fabrication
Coil ID 508 mm standard Custom ID available Compatible with standard uncoiler machine
Processing Slitting, Cut-To-Length Custom dimension service Can produce high strength narrow aluzinc strip
Typical Applications Heavy-duty PV brackets, large span building frames, heavy load wall support, industrial equipment frame, grain silo support Heavy load structural metal profiles Select Q355+AZ when high load bearing required

App Market

Reliable Steel Coil Solutions For Diverse Industrial Applications

Product Packaging

Secure Export Packaging For Safe Handling And Delivery

FAQs

Equivalent ASTM SS Grade50, high strength structural grade with yield strength ≥355MPa

Q355+AZ yield strength higher, suitable for heavy load projects. Q235+AZ for normal load PV brackets and building frames.

Yes, it can be roll formed, suitable for heavy load solar mounting structure.

Yes, chromium-free passivation surface is available for environmental requirement.

MOQ 5 ton, delivery time 7–15 working days after deposit received.

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