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G300 G550 Hot Dip DIN Galvanized Iron Coil Coating Z30-Z275g

Categories Galvanized Steel Coils
Brand Name: Wuxi Talat
Model Number: GI
Certification: Manufacture certificate
Place of Origin: China
MOQ: 5 tons
Price: negotiate
Payment Terms: T/T,Western Union,L/C
Supply Ability: 10000tons per month
Delivery Time: Negotiated
Packaging Details: Standard seaworthy export packing or as customer demands
Item: Hot-dipped Galvanised Steel Coil
Sample: Sample Freely
Price Term: FOB CIF CFR
Coil Width: 600-1500 mm
Spangle: Regular/Zero/Big
Surface Finish: Spangle or Non-Spangle
Surface Treatment: galvanized
Thickness: 0.12-6mm or customer's requirement
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G300 G550 Hot Dip DIN Galvanized Iron Coil Coating Z30-Z275g

G300 G550 Hot Dip DIN Galvanized Iron Coil Coating Z30-Z275g
Product Specifications
StandardAISI, ASTM, BS, DIN, GB, JIS
TypeHot Dipped
SurfaceGalvanized Coated
Surface StructureNormal spangle coating(NS), minimized spangle coating(MS), spangle-free(FS)
Zinc Coating15-275g/m²
Thickness0.12mm-4.0mm
Width600mm-1250mm
Coil Weight3-5 Tons or Required
Coil ID508mm/610mm
CoatingPE/PVDF/HDP/SMP
Top Painting10-35 Microns
Back Painting5-35 Microns
MOQ5 Tons (1 20ft FCL)
Payment TermT/T (30% Deposit + 70%)
Product Display
Galvanized steel coil product display Close-up view of galvanized steel surface
Key Advantages
  • Low processing cost: Hot-dip galvanizing rust prevention costs are lower than other paint coatings
  • Multi-faceted protection: All parts of plated components receive zinc coating, including recesses, sharp corners, and hidden areas
  • Simple inspection: Hot-dip galvanized layers can be tested visually and with simple non-destructive coating thickness gauges
Applications

Galvanized steel coil products are mainly used in construction, light industry, automotive, agriculture, animal husbandry, and fishing industries. Applications include building roofs, highway guardrails, sheet metal processing, roof grilles, household appliance enclosures, ventilation ducts, chimneys, kitchen utensils, grain storage and transportation, and frozen processing of meat and aquatic products.

0.6m Width Dx51 Spcc Grade Galvanized Steel Coils
Packaging & Shipping

Product packaging can be customized according to customer requirements and factory standards.

Galvanized steel coil packaging example 1 Galvanized steel coil packaging example 2
Frequently Asked Questions
What does zinc coating weight mean? What options do you offer?

Zinc coating weight (also called zinc mass) is measured in g/m² (both sides total). It determines the corrosion resistance lifespan of the steel.

Coating Mass (g/m²)Typical Application
40-80Indoor use, light protection
100-140General construction, roofing
180-275Heavy industry, structural components
350-450Coastal areas, high-corrosion environments

Note: Higher coating weight = longer service life = higher cost. We recommend selecting based on your actual environmental conditions.

What standards do you follow?

Our galvanized steel coils comply with major international standards:

  • ASTM A653 - American Standard
  • JIS G3302 - Japanese Standard
  • EN 10346 - European Standard
  • GB/T 2518 - Chinese Standard

All products come with Mill Test Certificates (MTC) that can be provided upon shipment.

What is spangle? Regular spangle vs zero spangle - which should I choose?

Spangle refers to the visible crystal patterns on the surface of galvanized steel, formed during the solidification of the zinc coating.

TypeDescriptionBest For
Regular SpangleVisible snowflake-like crystalsApplications where appearance is not critical; prepainted base
Zero SpangleSmooth, uniform surface with no visible crystalsPainting applications, prepainted steel, automotive parts where surface smoothness matters

Recommendation: If you plan to paint directly on the surface, zero spangle is strongly recommended for better paint adhesion.

Does galvanized steel rust?

While galvanized steel offers excellent corrosion protection, white rust (zinc oxide) can occur under certain conditions:

  • Poor ventilation during storage
  • High humidity or condensation
  • Direct contact with rainwater
How to prevent white rust?

Prevention methods:

  • Passivation treatment - We apply chromate or chromium-free passivation before shipment
  • Oil coating - Anti-rust oil can be applied for ocean freight shipments
  • Proper storage - Store in a dry, ventilated warehouse; avoid outdoor storage
Buy G300 G550 Hot Dip DIN Galvanized Iron Coil Coating Z30-Z275g at wholesale prices
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