MachineU > China Products > Minerals & Metallurgy > Carbon Steel > Coated Flat Steel Products > Galvanized Steel Products
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
Specifications
Brand Name :
Wuxi Talat
Model Number :
GI
Certification :
manufacture certificate
Place of Origin :
China
MOQ :
5tons
Price :
negotiated
Payment Terms :
T/T,Western Union,L/C
Supply Ability :
100,000tons
Delivery Time :
7-15days
Packaging Details :
Standard seaworthy export packing or as customer demands
Item :
Galvanized steel coils
Surface treatment :
Chromated / Oiled / Anti-fingerprint
Zinc Layer :
30-275g
Surface :
Big Spangle / Regular / Zero Spangle
Thickness :
0.12mm~3.0mm
Edge :
Mill Edge Slit Edge
Material :
Cold rolled steel base
Grade :
DX51D, DX52D, SGCC, G550
Description
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
Product Overview

Galvanized steel coil (GI coil) is a carbon steel sheet coated with a protective layer of zinc through a hot-dip galvanizing process. This zinc layer provides excellent corrosion resistance, making it suitable for both indoor and outdoor applications.

Compared with untreated steel, galvanized steel significantly improves durability, reduces maintenance costs, and extends service life, especially in humid or coastal environments.

Technical Specifications
Item Value
Standard AiSi, ASTM, BS, DIN, GB, JIS
Place of Origin China
Zinc Coating Z30~275
Type Steel Coil
Technique Cold Rolled
Surface Treatment Chromated / Oiled / Anti-fingerprint
Application Roofing sheets / corrugated sheets / Steel structures
Special Use High-strength Steel Plate
Width 0.6m-3m or as required
Length 4m-12m or as required
Tolerance ±1%
Type Hot-Galvanized Steel Coils
Grade DX51D, SGCC, ASTM A653
Product Display
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
Key Benefits
Long-Term Corrosion Protection

The zinc coating acts as a barrier and sacrificial layer, protecting the steel from rust and oxidation.

Cost-Effective Solution

Galvanized steel offers a lower lifecycle cost compared to stainless steel or coated alternatives.

Versatile Processing Performance

Suitable for:

  • Roll forming
  • Cutting
  • Punching
  • Welding
Multiple Surface Options
  • Big Spangle (visible pattern, decorative use)
  • Regular Spangle (standard industrial use)
  • Zero Spangle (smooth surface for painting)
Applications

Our galvanized steel coils are widely used across multiple industries:

  • Construction: Roofing sheets, wall panels, corrugated sheets, gutters, and ventilation ducts
  • Industrial: C purlins, steel structures, highway guardrails
  • Automotive: Car body parts, chassis components
  • Home Appliances: Back panels of refrigerators, washing machines, electrical cabinets
Quality Assurance

We strictly control the production process from raw material selection to final packaging. All products undergo rigorous testing including:

  • Tensile Strength Test
  • Zinc Coating Uniformity Test (Preece Test)
  • Salt Spray Corrosion Test
Packaging & Shipping

To ensure the product arrives in perfect condition:

  • Inner Packaging: Anti-rust oil film + water-proof kraft paper
  • Outer Packaging: Galvanized steel sheet wrapping + iron rings reinforcement
  • Loading: Standard export sea-worthy packaging

Port of Loading: Tianjin / Shanghai / Qingdao, China

Delivery Time: 15-25 days after receiving deposit or LC

Frequently Asked Questions
Q1: What does the zinc coating weight "Z275" or "G90" mean?

A:

  • Z275 (according to EN standard) means the total zinc coating weight on both sides is 275 grams per square meter (approximately 138g/m² per side)
  • G90 (according to ASTM standard) means the total zinc coating weight is 0.90 ounces per square foot, which is approximately 275g/m² as well

In simple terms, the higher the number, the thicker the zinc layer and the better the rust protection. Common options range from Z40 (light protection, suitable for indoor use) to Z275 (heavy protection, suitable for outdoor roofing)

Q2: Can you provide materials suitable for deep drawing or bending?

A: Yes. We offer various grades to meet different forming requirements:

  • DX51D / SGCC: Suitable for simple bending and general forming
  • DX52D / SGCD: Suitable for moderate drawing and forming
  • DX53D / DX54D: Suitable for deep drawing and complex shapes

Please inform us of your specific application, and we will recommend the most suitable grade and temper

Q3: What surface treatments are available? What is "anti-fingerprint"?

A: We offer three common surface treatments:

  1. Oiled: A thin layer of oil is applied to prevent rust during storage and transportation. Suitable for most industrial applications
  2. Non-oiled / Dry: No oil applied. Suitable for applications that require immediate painting or welding without degreasing
  3. Anti-fingerprint (AFP): A transparent protective coating is applied to the surface, which resists fingerprints, improves corrosion resistance, and provides a smoother touch. This is commonly used for home appliances and decorative applications
Q4: How do you ensure the quality of the galvanized steel coil?

A: We have a strict quality control system. Before shipment, each batch undergoes:

  • Spectrometer analysis: To verify chemical composition
  • Tensile testing: To ensure yield strength and elongation meet the standard
  • Salt spray test: To verify the uniformity and corrosion resistance of the zinc coating
  • Third-party inspection: We welcome inspections by SGS, BV, or any other accredited agency at the buyer's request
Q5: What is your minimum order quantity (MOQ)?

A: Our standard MOQ is 25 tons (one 20-foot container). However, for samples or trial orders, we can accommodate smaller quantities such as 5-10 tons to help new customers evaluate our product quality. Please contact us to discuss your specific needs

Send your message to this supplier
Send Now

GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction

Ask Latest Price
Watch Video
Product Detail
Brand Name :
Wuxi Talat
Model Number :
GI
Certification :
manufacture certificate
Place of Origin :
China
MOQ :
5tons
Price :
negotiated
Contact Supplier
video
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction
GI Coil Zinc Coated Steel Sheet Z40–Z275 DX51D SGCC for Roofing & Construction

Wuxi Talat Steel Co., Ltd.

Verified Supplier
1 Years
jiangsu, wuxi
Since 2013
Business Type :
Manufacturer, Distributor/Wholesaler
Main Products :
Stainless Steel Sheet, Steel Tin Plate, Electrolytic Tinplate Coil
Total Annual :
4000,000-6000,000
Employee Number :
50~60
Certification Level :
Verified Supplier
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products Galvanized Steel Coils
MachineU China Products Minerals & Metallurgy Carbon Steel Coated Flat Steel Products Galvanized Steel Products
Contact Supplier
Submit Requirement