Hot Sales 4mm Galvanized Steel Coil Coil Gi High Quality Dx51d+Z275/ ASTM A653 Galvanized Steel Coil Gi Coils/Sheets L Galvalume Steel Coil Az100 Az200 for Roof

Product Description

Galvanized sheet is a thin steel plate with a zinc layer from hot-dip galvanizing to boost corrosion resistance and lifespan.

Specification

Product Name	Galvanized Steel Coil
Standard	EN10346, JIS G3302, ASTM A653,AS 1397,GB/T 2518
Thickness	0.1-100mm or customization
Diameter	500-2000mm or customization
Color	Natural color or customization
Material	Q235A, Q235B, Q235C, Q235D, Q345, SS400, St33, SPHC, A36
Surface treatments	Customization
Package	Standard seaworthy packaging for steel pipe
Certificate	CE, ISO9001
Payment term	30%T/T Advance + 70% Balance
Service	Provide Customize Service

Product Description

gi sheet galvanized coil

Galvanized Steel Coil from cold/hot-rolled sheets, zinc-coated via HDG or EG, offers strong corrosion resistance, cost-effectiveness, and processing ease.

I. Core Processes and Features

II. Common Specs (Reference)

1. Hot-dip Galvanizing (HDG, main)
Process: Steel strip dipped in 460°C zinc forming zinc-iron alloy + pure zinc.
Zinc Layer: Z80–Z350 g/m² (double), thick and robust.
Surface: Zinc granules (ordinary/small/none).
Advantages: Strong corrosion resistance (10–20 years), cathodic protection.
Applications: Construction, photovoltaics, guardrails, containers.
2. Electro-galvanizing (EG)
Process: Electrolytic zinc deposition.
Zinc Layer: Z10–Z50 g/m², thin and uniform.
Surface: Smooth, no zinc granules, high precision.
Advantages: Good appearance, ideal for deep drawing/precision processing.
Applications: Appliance shells, car panels, electronic enclosures.

Thickness: 0.12–6.0 mm
Width: 600–1500 mm (common 1000/1250 mm)
Coil inner diameter: 508 mm (20 inches)
Material: DX51D/SGCC (general), DX54D/SGCD (deep drawing)
Zinc code: Z120 (120g/m²), Z275 (275g/m²)

Advantages Summary

Corrosion resistance: Zinc layer as sacrificial anode extends lifespan vs. ordinary steel.

Processability: Easy to cut, bend, stamp, weld.

Low cost: More economical vs. stainless/aluminum sheets.

Aesthetic surface: Use directly or post-treat (color coating).

Selection Points

Process: For outdoor use/high corrosion, choose hot-dip (Z180+); for looks, pick electro-galvanizing.

Zinc Layer: Choose based on environment (coastal/heavy corrosion, choose Z275).

Base Material: For stamped parts, select deep drawing grade (DX54D/SGCD).

Surface: For appliances, choose zinc-free finish + passivation/anti-fingerprint.

Packing & Delivery

Company Profile

Shenggang (Shandong) Steel Group Co., Ltd. specializes in carbon steel, galvanized, PPGI PPGL, stainless steel sales/service. Located in Jinan, Shandong, with easy access. Products sold to 100+ countries in East China, Europe, Middle East, SE Asia. Annual sales 50M+ tons. Accepts OEM/ODM orders, with 20 years in steel industry. We adhere to global quality standards and mutual benefit. Welcome visits; offer airport pick-up, accommodation, meals. For catalog selection or custom needs, contact us. Our 24/7 sales team provides tailored quotes and delivery plans.

FAQ

Is galvanized steel as strong as steel?
Generally, galvanized steel is cheaper than stainless and easier to manipulate, retaining strength but not as strong as stainless. Its appearance is notably variable.
What are galvanized coils used for?
Used in roofing due to weather-resistant coating, galvanized coils resist rust/corrosion. Available in various dimensions.
1)Pre-sale Service
1.Sample available.
2. Full stock for quick delivery. Many styles available.
3. Accept OEM/ODM orders, logos/designs available.
4. Quality + Factory Price + Quick Response + Reliable Service
5. Professionally made products by expert team, ensuring service reliability.
2) After you choose
1. Calculate cheapest shipping and invoice promptly.
2. Recheck quality, dispatch in 1-2 days post-payment.
3. Provide tracking number and assist until parcel arrives.
3) After-sale choose
1. We appreciate customer suggestions on pricing and products.
2. For inquiries, contact us freely via E-mail or Telephone.