Reliable GI Steel Plate Supplier for Global Projects – Large Inventory & Competitive Price

Overview

As a galvanized steel plate supplier, CJM provides a wide range of hot dipped galvanized steel plates, coils, and sheets for structural, fabrication, and industrial use. Whether you need GI sheet galvanized steel coil for building construction, welded parts, or OEM components, we ensure consistent quality, accurate thickness, and reliable global delivery.

What Is Galvanized Steel Plate?

Galvanized steel plate refers to carbon steel sheet or coil coated with a protective layer of zinc through hot-dip galvanizing. The zinc coating prevents corrosion and extends the service life of the steel in both indoor and outdoor applications.

Our product range includes:

👉 PPGI / PPGL Coated Steel Sheet

👉 Pattern Prepainted Galvanized Sheets for Decoration

👉 Color Coated Aluminum Plate

Available Sizes & Thickness of GI Sheet

We supply galvanized steel plate coil in a wide range of thicknesses and widths to match diverse application requirements.

Thickness (mm)	Inch Equivalent	Common Applications
1.6 mm	1/16″ galvanized steel plate	HVAC, ducting, brackets
3.2 mm	1/8″ galvanized steel plate	Framing, fabrication
6.4 mm	1/4″ galvanized steel plate	Heavy structures
12.7 mm	1/2″ galvanized steel plate	Industrial base plates

Custom sizes available upon request.

Product Specifications – GI Steel Coil & Zinc Coated Sheet

Item	Details
Standard	ASTM A653, JIS G3302, EN 10346
Base Material	SPCC, SGCC, DX51D, Q195–Q235
Zinc Coating*	40–275 g/m² (Z40–Z275)
Width	600–1500 mm
Length	Custom cut or coil
Surface	Spangle / Zero spangle / Oiled / Dry
Edge	Mill edge / Slit edge
Packing	Standard seaworthy export packing

*Zinc coating weight can be specified as single-side or double-side, according to customer requirements.

Mechanical Properties – Galvanized Steel Plate & Coil

Grade	Standard	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation (%)	Notes
SGCC	JIS G3302	≥ 205	270–500	≥ 22	General commercial use
DX51D+Z	EN 10346	≥ 195	270–500	≥ 22	Widely used in construction & fabrication
Q195–Q235	GB/T 700 (Base Material)	195–235	315–450	≥ 26	Structural applications
CS Type A/B	ASTM A653	≥ 205	270–440	≥ 20	Meets ASTM coating standards

Notes:

• Typical values for common thickness ranges. Properties are thickness-dependent (thicker plates may have slightly lower elongation and yield strength).
• SGCC corresponds to JIS G3302; DX51D+Z corresponds to EN 10346.
• Mechanical properties comply with international standards. Customized grades are available upon request.

Advantages of Hot Dipped Galvanized Sheet

• Corrosion Resistance: Zinc coating protects steel from rust and oxidation.
• Versatility: Suitable for fabrication, framing, HVAC, electrical and more.
• Weldability: Can be welded with appropriate ventilation or pre-treatment.
• Cost-Effective: Long-term protection with minimal maintenance.

Looking for 1/4 galvanized steel plate for welding or 1/16 GI sheet for ducting? We’ve got you covered.

Applications of Galvanized Steel Plate & Coil

• Structural support frames & beams
• HVAC and air ducting
• Trailers, containers, and chassis parts
• Cable trays and electrical panels
• Fencing, gates, and guard rails
• Flooring and anti-slip platforms
• General fabrication

For flooring and anti-slip applications, we also supply hot dip galvanized checkered plates in both coil and sheet formats.

Why Choose CJM Steel as Your Galvanized Steel Plate Supplier?

• Large inventory of GI steel coil and galvanized sheet
• Flexible MOQ & customized cutting services
• Zinc coating and thickness options from 1/16″ to 1/2″ galvanized steel plate
• Export experience to Southeast Asia, Middle East, Africa, and South America
• Competitive price with fast delivery

Packing & Shipping

• Standard export packaging: Waterproof paper + steel strapping
• Custom packaging solutions available
• Container loading optimization for cost efficiency
• Experienced in handling all shipping documentation
• Flexible shipping terms (FOB, CIF, etc.)

FAQs About GI Sheet & Galvanized Coil

• Q: What is the typical thickness of GI sheet?
  A: From 0.3 mm to 12.7 mm, with common options like 1/16″, 1/8″, 1/4″, and 1/2″ galvanized steel plate.
• Q: What’s the difference between galvanized sheet and PPGI?
  A: Galvanized sheet (GI) has only zinc coating, while PPGI includes an extra layer of paint.
• Q: Do you supply galvanized steel plate coil for industrial use?
  A: Yes, we offer both coil and cut sheet formats suitable for industrial processing, welding, and forming.

Get a Quote Today

Need galvanized steel plate for your construction project or OEM manufacturing? Contact us for a free quote now. Request a Quote

Related Article: Understanding Galvanized Steel Thickness and Sizes: A Comprehensive Guide

Q: What is your company’s main products/services?

A: We are a professional manufacturer for Carbon Steel, Alloy Steel and Profile products. We have the experience of steel business for more than 10 years and our products are exported to Mid East,South America,Southeast Asia,Africa,South and East Asia etc.

Q: Can I go to your factory for a visit?

A: Of course, we welcome customers from all over the world to visit our factory.

Q: What are your terms of payment?

A: 30% T/T deposite and 70% balance before shipment.

Q: What is your delivery time?

A: For stocks,we could transport the goods to loading port within 7 days after we received the deposit; For production,it usually takes about 15-30 days after receiving the deposit.

Q: Do you provide samples? Are they free or paid?

A: Samples are available for free,but the courier freight will be covered by customer account.

Q: Do you accept the third party inspection?

A:Yes, we fully accept ‌third-party inspections.

Q: Why should I buy from you not from other suppliers?

A: Integrating the superior resources of China’s steel industry, we provide customers with high-quality steel products at preferential prices, and can ensure that the goods are delivered to customers in a timely manner.

Q:How can you guarantee quality?

A: Always a pre-production sample before mass production;Always 100% inspected before shipment