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Cold Rolled Q195 Q235 Q235B Galvanized Steel Coil with Z81-Z120 Zinc Coating for Construction and Industrial Use

Name: Cold Rolled Q195 Q235 Q235B Galvanized Steel Coil with Z81-Z120 Zinc Coating for Construction and Industrial Use
Brand: Wuxi Sylaith Special Steel Co., Ltd.
SKU: Q195, Q235, Q235B
Price: 20.00 USD
Availability: InStock

Brand Name:	Sylaith
Model Number:	Q195, Q235, Q235B
MOQ:	1 Ton
Price:	Negotiable
Delivery Time:	7-15 days
Payment Terms:	30% T/T Advance + 70% T/T Balance

Detail Information

Product Description

Detail Information

Place of Origin:

China

Certification:

MTC

Product Name:

Galvanized Steel Coil / GI Metal Strip

Standard:

ASTM / AISI / JIS / EN

Base Material:

Q195, Q235, Q235B (Cold Rolled Technology)

Thickness:

0.3 Mm - 2.0 Mm

Width:

700 Mm - 2000 Mm (custom Sizes Available)

Length:

Customized

Zinc Coating:

Z81 - Z120 (30-275 G/m² Available)

Hardness:

Hard

Surface:

Galvanized, Spangle Optional

MOQ:

1 Ton, We Can Accept Sample Order

Payment Term:

30% T/T Advance + 70% T/T Balance

Packaging Details:

Standard export sea-worthy packing or as customers required

Supply Ability:

1000+tons/month

Highlight:

Z81-Z120 Zinc Coating Galvanized Steel Coil

Q195 Q235 Q235B Base Material GI Metal Strip

Cold Rolled Technology Galvanized Coil

Product Description

Attribute	Detail
Product Name	Galvanized Steel Coil / GI Metal Strip
Type	Steel Coil
Base Material	Q195, Q235, Q235B (Cold Rolled Technology)
Thickness	0.3 mm - 2.0 mm
Width	700 mm - 2000 mm (custom sizes available)
Length	Customized
Zinc Coating	Z81 - Z120 (30-275 g/m² available)
Standard	ASTM / AISI / JIS / EN
Hardness	Hard
Surface	Galvanized, spangle optional
Skin Pass	Yes
Processing Service	Welding, Punching, Cutting, Bending, Decoiling
Color (for PPGI)	Customized per RAL or customer sample

Product Description

Galvanized Steel Strip Coils are carbon steel strips coated with a protective layer of zinc through a hot-dipping process, providing excellent corrosion resistance and extended service life. Manufactured by Wuxi Sylaith Special Steel Co., Ltd in Jiangsu, China, these coils combine the strength of Q195/Q235/Q235B base materials with advanced cold rolling technology and uniform zinc coating (Z81-Z120), making them the preferred choice for construction and industrial applications.

Our Prime Galvanized Steel Coils are produced from high-quality cold-rolled steel strips, ensuring consistent mechanical properties, precise dimensional accuracy, and superior surface finish. Whether you need material for pipe manufacturing, roofing sheets, or general fabrication, this product delivers reliability and versatility.

Why Choose Sylaith Galvanized Steel Coils?

Superior Corrosion Resistance: Z81-Z120 zinc coating protects against rust and harsh environments
Excellent Formability: Cold rolled technology enables easy bending, punching, and cutting
Consistent Quality: Manufactured under strict quality control with multiple international certifications
Hard Hardness Grade: Suitable for applications requiring higher strength and durability
Flexible MOQ: Starting from 1 ton, sample orders accepted

Applications

The versatility of Sylaith Galvanized Steel Coils makes them suitable for numerous industries and applications:

Pipe Manufacturing

Ideal base material for manufacturing welded pipes, conduits, and tubing used in construction, water supply, and infrastructure projects.

Roofing & Construction

Perfect for corrugated roofing sheets, wall panels, purlins, and building cladding systems.

Container Manufacturing

Used for shipping containers, storage tanks, and industrial containers requiring corrosion protection.

Fencing & Guardrails

Ideal for highway guardrails, security fencing, garden fences, and agricultural enclosures.

General Fabrication

Suitable for making small tools, machine parts, electrical cabinets, and stamped components.

Cutting Sheets

Can be slit and cut into sheets for various industrial and manufacturing applications.

Automotive Components

Used for underbody parts, brackets, and structural components requiring strength and rust resistance.

Working Principle: How Galvanized Steel Coils Are Made

Cold Rolled Galvanized Steel Coils are produced through a precise manufacturing process:

Step 1: Cold Rolling Base Material Preparation

High-quality Q195/Q235/Q235B hot rolled steel strips undergo cold rolling to achieve precise thickness (0.3-2.0mm), improved surface finish, and enhanced mechanical properties. Cold rolling also increases strength and hardness (Hard grade).

Step 2: Surface Cleaning

The cold rolled strip is thoroughly cleaned through:

Degreasing: Removes rolling oils and contaminants
Pickling: Removes iron oxides and scale
Fluxing: Prepares the surface for optimal zinc adhesion

Step 3: Hot Dip Galvanizing

The cleaned strip passes through a bath of molten zinc at approximately 450°C-460°C. A metallurgical bond forms between the steel and zinc, creating a corrosion-resistant layer. The coating weight is precisely controlled to Z81-Z120 (grams per square meter).

Step 4: Cooling & Finishing

After coating, the strip is cooled, then may undergo skin pass or tension leveling to improve flatness and surface quality.

Step 5: Inspection

Every coil is inspected for:

Coating thickness and uniformity
Surface quality and appearance
Mechanical properties
Dimensional accuracy (thickness, width)

Step 6: Coiling & Packaging

The finished product is recoiled, weighed, and packaged with waterproof paper and steel strips for safe ocean transport.

FAQ (Frequently Asked Questions)

Q1: What is the difference between Q195, Q235, and Q235B?

Q195 has lower carbon content (≤0.12%), making it softer and more formable—ideal for complex bending and light applications.
Q235 has medium carbon content (≤0.22%) for higher strength—suitable for general structural use.
Q235B is a variant of Q235 with guaranteed impact toughness at 20°C, making it suitable for colder environments and load-bearing applications.

All three are low-carbon steels with excellent weldability and formability.

Q2: What does "Z81-Z120" zinc coating mean?

A: "Z" stands for Zinc, and the number indicates the coating weight in grams per square meter (total both sides). Z81-Z120 means the coil has a zinc coating of 81-120 g/m². Higher coating weights offer better corrosion resistance. For comparison:

Z60-Z80: Standard interior applications
Z81-Z120: Exterior and moderate corrosion environments
Z180-Z275: Heavy-duty, marine, and high-corrosion environments

Q3: What is the advantage of "cold rolled technology"?

A: Cold rolling offers several benefits over hot rolled:

Tighter thickness tolerances (±1%)
Smoother surface finish for better coating adhesion
Improved mechanical properties (higher strength, better hardness)
More uniform thickness across the strip
Better flatness for precision applications

Q4: What does "Hard" hardness mean?

A: "Hard" hardness indicates the coil has been cold rolled to achieve higher strength and resistance to deformation. This is suitable for applications requiring:

Higher load-bearing capacity
Wear resistance
Structural rigidity
Reduced spring-back during forming

Q5: What is your delivery time?

A: We offer fast delivery within 7 days after order confirmation for standard specifications. Custom orders may require additional time depending on quantity and processing requirements.

Q6: Can you provide samples before bulk order?

A: Yes, samples are available upon request. We welcome trial orders to test our quality before committing to larger volumes. MOQ for trial orders can be flexible.

Q7: What payment terms do you accept?

A: We accept T/T (30% deposit + 70% balance before shipment). Other terms can be negotiated for long-term partnerships.

Q8: Is this product suitable for outdoor applications?

A: Yes. With Z81-Z120 zinc coating, these coils provide excellent corrosion protection for outdoor applications like roofing, fencing, and construction. For harsh coastal or industrial environments, higher coating weights (Z180+) are recommended.

Q9: Can you customize the width and length?

A: Absolutely! We offer customized width (700-2000mm) and length based on your requirements. For PPGI products, we also offer custom RAL colors matching your samples.

Q10: What is the difference between GI and PPGI?

GI (Galvanized Steel): Zinc-coated only, silver-gray appearance
PPGI (Pre-Painted Galvanized Steel): GI coil with an additional color coating layer, available in various RAL colors

We supply both options based on your needs.

Q11: How do you ensure product quality?

A: We implement strict quality control throughout production:

Raw material inspection
In-process monitoring (thickness, coating weight)
Final inspection before packaging
Full traceability with Mill Test Certificate (MTC)

Q12: What is your packaging for export?

A: We use standard seaworthy packaging or as customers required.

Q13: Do you offer processing services?

A: Yes, we provide various processing services:

Welding
Punching
Cutting (slitting, cut-to-length)
Bending
Decoiling

Tags:

GI Coil

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Cold Rolled Q195 Q235 Q235B Galvanized Steel Coil with Z81-Z120 Zinc Coating for Construction and Industrial Use

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Cold Rolled Q195 Q235 Q235B Galvanized Steel Coil with Z81-Z120 Zinc Coating for Construction and Industrial Use

Brand Name:	Sylaith
Model Number:	Q195, Q235, Q235B
MOQ:	1 Ton
Price:	Negotiable
Packaging Details:	Standard export sea-worthy packing or as customers required
Payment Terms:	30% T/T Advance + 70% T/T Balance

Detail Information

Product Description

Detail Information

Place of Origin:

China

Brand Name:

Sylaith

Certification:

MTC

Model Number:

Q195, Q235, Q235B

Product Name:

Galvanized Steel Coil / GI Metal Strip

Standard:

ASTM / AISI / JIS / EN

Base Material:

Q195, Q235, Q235B (Cold Rolled Technology)

Thickness:

0.3 Mm - 2.0 Mm

Width:

700 Mm - 2000 Mm (custom Sizes Available)

Length:

Customized

Zinc Coating:

Z81 - Z120 (30-275 G/m² Available)

Hardness:

Hard

Surface:

Galvanized, Spangle Optional

MOQ:

1 Ton, We Can Accept Sample Order

Payment Term:

30% T/T Advance + 70% T/T Balance

Minimum Order Quantity:

1 Ton

Price:

Negotiable

Packaging Details:

Standard export sea-worthy packing or as customers required

Delivery Time:

7-15 days

Payment Terms:

30% T/T Advance + 70% T/T Balance

Supply Ability:

1000+tons/month

Highlight:

Z81-Z120 Zinc Coating Galvanized Steel Coil

Q195 Q235 Q235B Base Material GI Metal Strip

Cold Rolled Technology Galvanized Coil

Product Description

Attribute	Detail
Product Name	Galvanized Steel Coil / GI Metal Strip
Type	Steel Coil
Base Material	Q195, Q235, Q235B (Cold Rolled Technology)
Thickness	0.3 mm - 2.0 mm
Width	700 mm - 2000 mm (custom sizes available)
Length	Customized
Zinc Coating	Z81 - Z120 (30-275 g/m² available)
Standard	ASTM / AISI / JIS / EN
Hardness	Hard
Surface	Galvanized, spangle optional
Skin Pass	Yes
Processing Service	Welding, Punching, Cutting, Bending, Decoiling
Color (for PPGI)	Customized per RAL or customer sample

Product Description

Why Choose Sylaith Galvanized Steel Coils?

Superior Corrosion Resistance: Z81-Z120 zinc coating protects against rust and harsh environments
Excellent Formability: Cold rolled technology enables easy bending, punching, and cutting
Consistent Quality: Manufactured under strict quality control with multiple international certifications
Hard Hardness Grade: Suitable for applications requiring higher strength and durability
Flexible MOQ: Starting from 1 ton, sample orders accepted

Applications

The versatility of Sylaith Galvanized Steel Coils makes them suitable for numerous industries and applications:

Pipe Manufacturing

Ideal base material for manufacturing welded pipes, conduits, and tubing used in construction, water supply, and infrastructure projects.

Roofing & Construction

Perfect for corrugated roofing sheets, wall panels, purlins, and building cladding systems.

Container Manufacturing

Used for shipping containers, storage tanks, and industrial containers requiring corrosion protection.

Fencing & Guardrails

Ideal for highway guardrails, security fencing, garden fences, and agricultural enclosures.

General Fabrication

Suitable for making small tools, machine parts, electrical cabinets, and stamped components.

Cutting Sheets

Can be slit and cut into sheets for various industrial and manufacturing applications.

Automotive Components

Used for underbody parts, brackets, and structural components requiring strength and rust resistance.

Working Principle: How Galvanized Steel Coils Are Made

Cold Rolled Galvanized Steel Coils are produced through a precise manufacturing process:

Step 1: Cold Rolling Base Material Preparation

Step 2: Surface Cleaning

The cold rolled strip is thoroughly cleaned through:

Degreasing: Removes rolling oils and contaminants
Pickling: Removes iron oxides and scale
Fluxing: Prepares the surface for optimal zinc adhesion

Step 3: Hot Dip Galvanizing

Step 4: Cooling & Finishing

After coating, the strip is cooled, then may undergo skin pass or tension leveling to improve flatness and surface quality.

Step 5: Inspection

Every coil is inspected for:

Coating thickness and uniformity
Surface quality and appearance
Mechanical properties
Dimensional accuracy (thickness, width)

Step 6: Coiling & Packaging

The finished product is recoiled, weighed, and packaged with waterproof paper and steel strips for safe ocean transport.

FAQ (Frequently Asked Questions)

Q1: What is the difference between Q195, Q235, and Q235B?

Q195 has lower carbon content (≤0.12%), making it softer and more formable—ideal for complex bending and light applications.
Q235 has medium carbon content (≤0.22%) for higher strength—suitable for general structural use.
Q235B is a variant of Q235 with guaranteed impact toughness at 20°C, making it suitable for colder environments and load-bearing applications.

All three are low-carbon steels with excellent weldability and formability.

Q2: What does "Z81-Z120" zinc coating mean?

Z60-Z80: Standard interior applications
Z81-Z120: Exterior and moderate corrosion environments
Z180-Z275: Heavy-duty, marine, and high-corrosion environments

Q3: What is the advantage of "cold rolled technology"?

A: Cold rolling offers several benefits over hot rolled:

Tighter thickness tolerances (±1%)
Smoother surface finish for better coating adhesion
Improved mechanical properties (higher strength, better hardness)
More uniform thickness across the strip
Better flatness for precision applications

Q4: What does "Hard" hardness mean?

A: "Hard" hardness indicates the coil has been cold rolled to achieve higher strength and resistance to deformation. This is suitable for applications requiring:

Higher load-bearing capacity
Wear resistance
Structural rigidity
Reduced spring-back during forming

Q5: What is your delivery time?

A: We offer fast delivery within 7 days after order confirmation for standard specifications. Custom orders may require additional time depending on quantity and processing requirements.

Q6: Can you provide samples before bulk order?

A: Yes, samples are available upon request. We welcome trial orders to test our quality before committing to larger volumes. MOQ for trial orders can be flexible.

Q7: What payment terms do you accept?

A: We accept T/T (30% deposit + 70% balance before shipment). Other terms can be negotiated for long-term partnerships.

Q8: Is this product suitable for outdoor applications?

Q9: Can you customize the width and length?

A: Absolutely! We offer customized width (700-2000mm) and length based on your requirements. For PPGI products, we also offer custom RAL colors matching your samples.

Q10: What is the difference between GI and PPGI?

GI (Galvanized Steel): Zinc-coated only, silver-gray appearance
PPGI (Pre-Painted Galvanized Steel): GI coil with an additional color coating layer, available in various RAL colors

We supply both options based on your needs.

Q11: How do you ensure product quality?

A: We implement strict quality control throughout production:

Raw material inspection
In-process monitoring (thickness, coating weight)
Final inspection before packaging
Full traceability with Mill Test Certificate (MTC)

Q12: What is your packaging for export?

A: We use standard seaworthy packaging or as customers required.

Q13: Do you offer processing services?

A: Yes, we provide various processing services:

Welding
Punching
Cutting (slitting, cut-to-length)
Bending
Decoiling

Tags: