Galvanized Steel Sheet GI Supplier & Manufacturer

Galvanized Steel Sheet (GI)

Multiple steel grades cater to stamping, deep drawing and structural load-bearing working conditions.
Adjustable zinc coating weight, flexible anti-corrosion lifespan selection for different environments.
Precise thickness tolerance, great bending & deep drawing performance for secondary processing.
Uniform zinc layer effectively blocks moisture & oxygen, long-term rust prevention.
Complete sheet & coil supply, customized slitting & cutting service available

Product Overview

Galvanized Steel Sheet (GI) is a hot-dipped galvanized steel sheet produced by coating a low carbon steel substrate with a uniform pure zinc layer through a continuous hot-dip galvanizing process. Manufactured according to ASTM A653, JIS G3302, EN 10346, and GB/T2518 international standards, it provides reliable corrosion protection, stable processing performance, and flexible solutions for global industrial buyers.

The product covers multiple grade systems including Commercial Grade CS Type A/B/C, Forming Grade FS, Structural Grades SS230/SS340/SS550, and Deep Drawing Grades DDS/EDDS, meeting different requirements for stamping, forming, and structural applications.

Available with Z40–Z275g/㎡ zinc coating, thickness from 0.15mm to 3.5mm, and width from 600mm to 1500mm, Galvanized Steel Sheet (GI) can be supplied in both flat sheet and coil forms with customized slitting and cutting services. It is widely used in HVAC ventilation systems, light steel keels, home appliance casings, electrical distribution cabinets, and hardware stamping parts.

Galvanized Steel Sheet (GI)

Chemical & Mechanical Property Snapshot

Grade	C Max (%)	Mn Max (%)	P Max (%)	S Max (%)	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation Min (%)
CS Type A	0.15	0.60	0.05	0.05	—	270–410	≥20
CS Type B	0.15	0.60	0.04	0.05	140–300	270–410	≥22
FS	0.12	0.50	0.04	0.04	140–270	270–380	≥24
SS230	0.18	1.20	0.04	0.05	≥230	310–450	≥18
SS340	0.25	1.40	0.04	0.05	≥340	410–560	≥16
SS550	0.25	1.40	0.04	0.05	≥550	≥570	≥2
DDS	0.08	0.40	0.03	0.03	120–220	270–350	≥28
EDDS	0.01	0.30	0.02	0.02	100–180	260–340	≥32

Detailed Technical Specifications

Category	Item
Product Name	Galvanized Steel Sheet (GI)
Product Type	Hot-Dipped Galvanized Steel Sheet
Base Material	Low Carbon Steel Substrate
Manufacturing Process	Continuous Hot-Dip Galvanizing Process
Applicable Standards	ASTM A653, JIS G3302, EN 10346, GB/T2518
Commercial Grades	CS Type A/B/C
Forming Grade	FS
Structural Grades	SS230, SS340, SS550
Deep Drawing Grades	DDS, EDDS
Zinc Coating Weight	Z40–Z275g/㎡
Main Specification	G90 Mainstream Specification
Thickness Range	0.15–3.5mm
Width Range	600–1500mm
Supply Form	Flat Sheet and Galvanized Steel Coil
Coating Performance	Uniform zinc coating with strong adhesion
Processing Performance	Suitable for bending, folding, stamping, punching, welding and assembly
Corrosion Protection	Zinc layer isolates moisture and oxygen to prevent oxidation
Customization Service	Customized slitting and cutting available
Quality Documents	Official Mill Test Certificates available
Main Applications	HVAC pipes, light steel keels, home appliance casings, electrical cabinets, hardware stamping parts
MOQ	5 Ton
Payment Terms	T/T, L/C at Sight
Delivery Time	7–15 working days after receiving deposit
Package	Waterproof paper + plastic film + wooden pallet, seaworthy export packing

Product Comparison Table

Representative Grades	Main Characteristics	Recommended Applications	Remarks
CS Type A/B/C	Good surface quality and general processing performance	General blanking, simple bending parts	Suitable for non-critical forming applications
FS	Improved formability for stamping operations	Conventional formed components	Better ductility than CS grades
SS230 / SS340 / SS550	Higher yield strength for load-bearing applications	Light steel structures, structural components	SS = Structural Steel; available in different yield strength levels
DDS / EDDS	Excellent ductility for complex deep forming	Home appliance shells and deep-drawn parts	EDDS features ultra-low carbon content for extreme deep-drawing applications
Z180–Z275	Enhanced corrosion resistance for demanding environments	Humid, outdoor, and coastal environments	Longer service life under coastal and rainy conditions
Z40–Z140	Balanced corrosion protection and cost efficiency	General construction and industrial products	Economical and widely used coating grades

App Market

Reliable Steel Coil Solutions For Diverse Industrial Applications

HVAC Ducts GI Steel

Keels Steel Framing GI Steel

Home Appliance Casings GI Steel

Appliance casing

Electrical Distribution Cabinets GI Steel

Product Packaging

Secure Export Packaging For Safe Handling And Delivery

FAQs

What is Galvanized Steel Sheet (GI)?

Galvanized Steel Sheet (GI) is carbon steel coated with a pure zinc protective layer through hot-dip galvanizing technology to improve corrosion resistance.

What standards does GI galvanized steel sheet comply with?

The product complies with ASTM A653, JIS G3302, EN 10346, and GB/T2518 standards.

What zinc coating weight options are available?

The zinc coating weight ranges from Z40g/㎡ to Z275g/㎡, with G90 as a commonly used specification.

What grades are available for different applications?

Available grades include CS Type A/B/C, FS forming grade, SS230/SS340/SS550 structural grades, and DDS/EDDS deep drawing grades.

Can galvanized steel sheet be supplied in customized sizes?

Yes. GI sheet can be supplied in flat sheets or coils with customized slitting and cutting services.

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Galvanized Steel Sheet GI Supplier & Manufacturer