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Created with Pixso. Hot Dipped Galvanized Steel Coil with Zinc Coating 30-600g/m² for Construction and Roofing Applications - ASTM A653 Standard

Hot Dipped Galvanized Steel Coil with Zinc Coating 30-600g/m² for Construction and Roofing Applications - ASTM A653 Standard

브랜드 이름: Sylaith
모델 번호: SGCC, SGHC, DX51D, Q195 등
모크: 1톤, 샘플 요청도 환영합니다.
가격: 협상 가능
배달 시간: 특정 요구 사항 및 수량에 따라 7-35일
지불 조건: 30% T/T 사전 + 70% T/T 잔액
자세한 정보
원래 장소:
중국
인증:
MTC, ISO 9001
제품명:
아연도금강판코일(GI코일)
기준:
ASTM / AISI / JIS / EN
코일 무게:
고객의 요청에 따라
아연 피막 중량:
30g/m2-600g/m2, 양면
표면 유형:
일반 스팡글, 작은 스팡글, 제로 스팡글
거래조건:
FOB/CIF/CFR/EXW
포장 세부 사항:
표준 수출 항해에 적합한 포장 또는 고객 요구에 따라
공급 능력:
1000+톤/월
제품 설명
Product Overview – High Quality Galvanized Steel Coil Manufacturer

Galvanized Steel Coil (GI Coil) is a high-performance steel product coated with a layer of zinc through a hot-dip galvanizing process. This zinc coating significantly improves corrosion resistance, durability, and service life.

Our galvanized steel coils are widely used in construction, roofing systems, automotive parts, home appliances, agriculture equipment, and industrial manufacturing.

As a professional galvanized steel coil supplier and manufacturer from China, we provide stable quality, competitive pricing, and fast delivery for global buyers.


Why Galvanized Steel Coil is Needed (Rust Protection Problem)

Raw steel is highly vulnerable to corrosion when exposed to:

  • Moisture and humidity
  • Rain and outdoor environments
  • Industrial chemicals
  • Coastal salt air

Without protection, steel will quickly rust, leading to:

  • Structural failure
  • High maintenance costs
  • Short product lifespan
  • Safety risks in construction applications

Our Solution – Hot Dipped Zinc Coating Protection

Galvanized steel coil solves corrosion problems through a hot-dip zinc coating process.

Key benefits:

  • Zinc acts as a protective barrier against oxygen and moisture
  • Sacrificial protection (zinc corrodes first, protecting steel underneath)
  • Long service life in harsh environments
  • Low maintenance and cost-efficient solution

This makes GI coil ideal for both indoor and outdoor applications.


Galvanized Steel Coil Specifications
ItemDetails
Product NameGalvanized Steel Coil (GI Coil)
Manufacturing ProcessHot Dipped Galvanizing / Cold Rolled
Steel GradesSGCC, SGHC, DX51D, Q195, etc.
StandardsASTM A653, JIS G3302, GB, DIN, AISI
Thickness0.12 – 6.0 mm
Width600 – 1500 mm (max up to 1650 mm)
Zinc Coating30 – 600 g/m² (both sides)
Coil Inner Diameter508 mm / 610 mm
Coil Weight3 – 10 metric tons
Surface TypeRegular Spangle, Small Spangle, Zero Spangle
Surface TreatmentOiled, Passivated, Anti-fingerprint
Edge TypeMill Edge / Slit Edge

Applications of Galvanized Steel Coil

Galvanized steel coils are widely used across multiple industries:

Construction Industry
  • Roofing sheets
  • Wall panels
  • Steel structures
  • Industrial buildings
Home Appliances
  • Refrigerator panels
  • Washing machine shells
  • Air conditioning systems
Automotive Industry
  • Car body parts
  • Chassis components
  • Anti-corrosion parts
Agriculture & Industry
  • Grain storage systems
  • Silos and tanks
  • Equipment housing
Packaging & Commercial Use
  • Storage containers
  • Transportation packaging
  • Metal enclosures

How Galvanized Steel Coil is Manufactured

The production process includes:

  1. Steel Cleaning (Pickling) – removes oxide and impurities
  2. Cold Rolling – improves thickness accuracy and surface quality
  3. Hot-Dip Galvanizing – steel passes through molten zinc bath
  4. Cooling & Solidification – zinc forms a bonded protective layer
  5. Surface Treatment – oiling or passivation for enhanced protection
  6. Coiling & Packaging – ready for shipment

This process ensures strong adhesion, smooth surface, and excellent corrosion resistance.


How to Choose the Right Galvanized Steel Coil

When selecting GI coil, consider the following factors:

  • Zinc coating weight (g/m²): higher coating = better corrosion resistance
  • Application environment: indoor, outdoor, coastal, industrial
  • Steel grade: SGCC for forming, DX51D for general use
  • Surface finish: zero spangle for painting, regular spangle for structure
  • Thickness requirement: structural strength vs lightweight usage
  • Processing needs: cutting, stamping, or roll forming

Choosing the correct specification ensures longer service life and better performance.


Why Choose Us as Your Galvanized Steel Coil Supplier
  • Large-scale production capacity
  • Stable stock availability
  • Fast delivery within 7 days
  • Strict quality control system (ISO/BV certified)
  • Competitive factory-direct pricing
  • Export experience in global markets

We are committed to providing reliable steel solutions for long-term cooperation.


FAQ – Galvanized Steel Coil
Q1: What is galvanized steel coil used for?

It is widely used in construction, automotive parts, home appliances, and industrial manufacturing due to its corrosion resistance.

Q2: How long does galvanized steel last?

Depending on coating thickness and environment, it can last 10–50 years.

Q3: Can galvanized steel be welded or painted?

Yes. It can be welded with proper treatment and painted after surface preparation, especially zero-spangle types.

Q4: What is your minimum order quantity (MOQ)?

Our MOQ is 1 ton, suitable for both small and large buyers. Small sample orders are also welcome.

Q5: What is your delivery time?

For stock items, delivery is usually within 7~20 days after payment confirmation.

Galvanized Steel Coil Manufacturing Process Galvanized Steel Coil Applications Galvanized Steel Coil Quality Inspection
좋은 가격  온라인으로

제품 세부 정보

Created with Pixso. Created with Pixso. 상품 Created with Pixso.
직류 전기로 자극된 코일
Created with Pixso. Hot Dipped Galvanized Steel Coil with Zinc Coating 30-600g/m² for Construction and Roofing Applications - ASTM A653 Standard

Hot Dipped Galvanized Steel Coil with Zinc Coating 30-600g/m² for Construction and Roofing Applications - ASTM A653 Standard

브랜드 이름: Sylaith
모델 번호: SGCC, SGHC, DX51D, Q195 등
모크: 1톤, 샘플 요청도 환영합니다.
가격: 협상 가능
포장에 대한 세부 사항: 표준 수출 항해에 적합한 포장 또는 고객 요구에 따라
지불 조건: 30% T/T 사전 + 70% T/T 잔액
자세한 정보
원래 장소:
중국
브랜드 이름:
Sylaith
인증:
MTC, ISO 9001
모델 번호:
SGCC, SGHC, DX51D, Q195 등
제품명:
아연도금강판코일(GI코일)
기준:
ASTM / AISI / JIS / EN
코일 무게:
고객의 요청에 따라
아연 피막 중량:
30g/m2-600g/m2, 양면
표면 유형:
일반 스팡글, 작은 스팡글, 제로 스팡글
거래조건:
FOB/CIF/CFR/EXW
최소 주문 수량:
1톤, 샘플 요청도 환영합니다.
가격:
협상 가능
포장 세부 사항:
표준 수출 항해에 적합한 포장 또는 고객 요구에 따라
배달 시간:
특정 요구 사항 및 수량에 따라 7-35일
지불 조건:
30% T/T 사전 + 70% T/T 잔액
공급 능력:
1000+톤/월
제품 설명
Product Overview – High Quality Galvanized Steel Coil Manufacturer

Galvanized Steel Coil (GI Coil) is a high-performance steel product coated with a layer of zinc through a hot-dip galvanizing process. This zinc coating significantly improves corrosion resistance, durability, and service life.

Our galvanized steel coils are widely used in construction, roofing systems, automotive parts, home appliances, agriculture equipment, and industrial manufacturing.

As a professional galvanized steel coil supplier and manufacturer from China, we provide stable quality, competitive pricing, and fast delivery for global buyers.


Why Galvanized Steel Coil is Needed (Rust Protection Problem)

Raw steel is highly vulnerable to corrosion when exposed to:

  • Moisture and humidity
  • Rain and outdoor environments
  • Industrial chemicals
  • Coastal salt air

Without protection, steel will quickly rust, leading to:

  • Structural failure
  • High maintenance costs
  • Short product lifespan
  • Safety risks in construction applications

Our Solution – Hot Dipped Zinc Coating Protection

Galvanized steel coil solves corrosion problems through a hot-dip zinc coating process.

Key benefits:

  • Zinc acts as a protective barrier against oxygen and moisture
  • Sacrificial protection (zinc corrodes first, protecting steel underneath)
  • Long service life in harsh environments
  • Low maintenance and cost-efficient solution

This makes GI coil ideal for both indoor and outdoor applications.


Galvanized Steel Coil Specifications
ItemDetails
Product NameGalvanized Steel Coil (GI Coil)
Manufacturing ProcessHot Dipped Galvanizing / Cold Rolled
Steel GradesSGCC, SGHC, DX51D, Q195, etc.
StandardsASTM A653, JIS G3302, GB, DIN, AISI
Thickness0.12 – 6.0 mm
Width600 – 1500 mm (max up to 1650 mm)
Zinc Coating30 – 600 g/m² (both sides)
Coil Inner Diameter508 mm / 610 mm
Coil Weight3 – 10 metric tons
Surface TypeRegular Spangle, Small Spangle, Zero Spangle
Surface TreatmentOiled, Passivated, Anti-fingerprint
Edge TypeMill Edge / Slit Edge

Applications of Galvanized Steel Coil

Galvanized steel coils are widely used across multiple industries:

Construction Industry
  • Roofing sheets
  • Wall panels
  • Steel structures
  • Industrial buildings
Home Appliances
  • Refrigerator panels
  • Washing machine shells
  • Air conditioning systems
Automotive Industry
  • Car body parts
  • Chassis components
  • Anti-corrosion parts
Agriculture & Industry
  • Grain storage systems
  • Silos and tanks
  • Equipment housing
Packaging & Commercial Use
  • Storage containers
  • Transportation packaging
  • Metal enclosures

How Galvanized Steel Coil is Manufactured

The production process includes:

  1. Steel Cleaning (Pickling) – removes oxide and impurities
  2. Cold Rolling – improves thickness accuracy and surface quality
  3. Hot-Dip Galvanizing – steel passes through molten zinc bath
  4. Cooling & Solidification – zinc forms a bonded protective layer
  5. Surface Treatment – oiling or passivation for enhanced protection
  6. Coiling & Packaging – ready for shipment

This process ensures strong adhesion, smooth surface, and excellent corrosion resistance.


How to Choose the Right Galvanized Steel Coil

When selecting GI coil, consider the following factors:

  • Zinc coating weight (g/m²): higher coating = better corrosion resistance
  • Application environment: indoor, outdoor, coastal, industrial
  • Steel grade: SGCC for forming, DX51D for general use
  • Surface finish: zero spangle for painting, regular spangle for structure
  • Thickness requirement: structural strength vs lightweight usage
  • Processing needs: cutting, stamping, or roll forming

Choosing the correct specification ensures longer service life and better performance.


Why Choose Us as Your Galvanized Steel Coil Supplier
  • Large-scale production capacity
  • Stable stock availability
  • Fast delivery within 7 days
  • Strict quality control system (ISO/BV certified)
  • Competitive factory-direct pricing
  • Export experience in global markets

We are committed to providing reliable steel solutions for long-term cooperation.


FAQ – Galvanized Steel Coil
Q1: What is galvanized steel coil used for?

It is widely used in construction, automotive parts, home appliances, and industrial manufacturing due to its corrosion resistance.

Q2: How long does galvanized steel last?

Depending on coating thickness and environment, it can last 10–50 years.

Q3: Can galvanized steel be welded or painted?

Yes. It can be welded with proper treatment and painted after surface preparation, especially zero-spangle types.

Q4: What is your minimum order quantity (MOQ)?

Our MOQ is 1 ton, suitable for both small and large buyers. Small sample orders are also welcome.

Q5: What is your delivery time?

For stock items, delivery is usually within 7~20 days after payment confirmation.

Galvanized Steel Coil Manufacturing Process Galvanized Steel Coil Applications Galvanized Steel Coil Quality Inspection