G550 Az150 Az120 Aluminum Zinc Coated Aluzinc Gl PPGL Galvalume Steel Coils

Product Description

 

GALVALUME STEEL COIL

Product Parameters

 

Our aluminized zinc coils: The king of cost-effectiveness for outdoor high corrosion resistance, coastal salt spray, color-coated substrates, building envelopes, and long-term maintenance-free applications. This product uses an industry-standard 55% aluminum + 43.5% zinc + 1.5% silicon alloy hot-dip process, which distinguishes it from ordinary galvanized coils with pure zinc coating and pure aluminized coils with pure aluminum coating. It has the dual advantages of aluminum layer's isolation and corrosion resistance, heat resistance and oxidation resistance, and zinc layer's cathodic self-healing protection. 

55% AL Galvalume steel coils
Base material	CR Full hard steel coils
Standards	GB, ASTM, EN, JIS
Grade	DX51D, DX52D, DX53D, DX54D
	S250GD, S280GS, S300GD, S320GD, S350GD, S550GD
	CS type A, CS type B, FS, DS, EDDS
	Grade 33, Grade37, Grade40, Grade50, Grade80
	SGCC, SGCH, SGC340, SGC400, SGC440, SGC570
Thickness	0.25-1.2mm
Width	720-1250mm
Zinc coating	AZ30-AZ150 g/m2
Spangle	Regular spangle
Surface treatment	Chromated, Oiled, AFP (anti-finger print)
Coil weight	3-25MT
Coil ID	508 or 610mm

Galvalume steel is also called Aluminum-Zinc Alloy Coated Steel, Zinc-alu steel, aluminized zinc steel (aluzinc steel), SGLC, The galvalume metal is composed of 55% aluminium, 43.4% zinc and 1.6% silicon solidified at 600 ~C. Its whole structure consists of aluminium-iron-silicon-zinc, forming a compact quaternary crystal alloy. The surface of the galvalume steel sheet is characterized by smooth, flat and gorgeous stars, and its base color is silver white. The special coating structure makes it have excellent corrosion resistance. The normal service life of galvalume steel sheet is up to 25a, and its heat resistance is good. It can be used in high temperature environment at 315 C. The adhesion between coating and paint film is good, and it has good processing performance. It can be punched, sheared and welded. The surface conductivity is very good.

Product Description

 

Advantages

The normal service life of galvalume steel sheet is up to 25a, and its heat resistance is good. It can be used in high temperature environment at 315 C. The adhesion between coating and paint film is good, and it has good processing performance. It can be punched, sheared and welded. The surface conductivity is very good.

Main Features

1.Corrosion resistance:When zinc is abraded, aluminum forms a dense layer of alumina that prevents further corrosion of the corrosive material inside.
2.Heat resistance:Aluminum zinc alloy steel has good heat resistance and can withstand high temperatures of more than 300 degrees Celsius. 3.Thermal reflexes:The heat reflectivity of Al Zn steel plate is very high, which is two times that of galvanized steel sheet.
4.Economical Efficiency:Since the density of 55% AL-Zn is smaller than the density of Zn, the aluminum-zinc-plated steel sheet is more than 3% larger than the area of the plated steel sheet when the weight is the same and the thickness of the gold-plated layer is the same.

We can also produce the Pre-painted galvalume steel coil as customer needs. 

Our advantages in aluminum-zinc coated coils:

1. Automatic Rust Prevention at Cut Edges:
Self-healing of cut, bent, and drilled surfaces, solving the common problem of rust at sheet metal cut edges.
2. Salt Spray and Outdoor Resistance:
Stable in coastal, acid rain, and sun-exposed environments, preventing powdering, whitening, and delamination.
3. Strong Coating Adhesion:
Uniform and dense crystallization on the sheet surface, a dedicated substrate for high-end color steel sheets and printed sheets, preventing paint peeling and flaking.
4. Flawless Surface:
No blackening, watermarks, unplated areas, or zinc slag; aesthetically pleasing finish requiring no secondary polishing.
5.High-Quality Materials:
Compliant coating ratios and sufficient weight; supports spectral testing and salt spray re-inspection.
6. In-Stock and Fast Delivery:
Massive stock of standard specifications; same-day invoicing and shipping; expedited customization supported.

Product Application

 

Packing and Shipping

 

Quality Control

 

Company Profile

 

About us

ZK Steel Group is a large multinational steel resource group based in Shandong, China. Founded in 2010 and exporting worldwide since 2016, the Group achieves an annual turnover of RMB 5 billion, with each branch maintaining a stable monthly export volume of 20,000-40,000 tons - ranking among the leading steel exporters in Shandong.

FOUNDED	2010	EXPORT SINCE	2016
ANNUAL TURNOVER	RMB 5 Billion	MONTHLY EXPORT / BRANCH	20,000-40,000 tons
COUNTRIES SERVED	50+	HEADQUARTERS	Shandong, China

Global Industrial Layout  

• Domestic network - four branch offices in Guangzhou, Hainan, Suzhou & Yiwu, plus a self-owned modular house factory in Dezhou.
• Overseas presence - self-built steel pipe production bases in Egypt & Syria; direct offices in Peru & Iran, covering the Middle East and South America.

Full Self-owned Production Capacity  

• Self-production of galvanized (GI) and PPGI / PPGL steel coils.
• Stainless steel deep processing - precision cutting, film lamination & surface treatment.
• Customized steel structures & modular houses - integrated design and manufacturing.

First-tier Authorized Agent of Top Steel Mills 

• Direct supply from Nippon Steel, Shougang, Rizhao Steel & Laigang (full product range).
• Core products: HRC, CRC, stainless steel, steel pipes, H-beams & steel profiles.
• Special materials - tool steel, silicon steel, alloy steel & complete supporting accessories.

Core Positioning 
As a full-industry-chain steel resource integration specialist, We connects direct mill sourcing, self-owned manufacturing, multi-category deep processing, nationwide warehousing, local overseas production and global project installation. One partner, one-stop solutions - from material selection and customized processing to bulk export and on-site installation - saving customers time on communication, comparison, logistics and after-sales, while leveraging group-scale advantages for stable quality, punctual delivery and competitive pricing.
Stable steel solutions for clients in more than 50 countries - for over a decade.

Our Cooperation

 

Q1 : What is your payment terms?
A1 : 30% deposit & balance against B/L or L/C at sight.
 

Q2 : What is your delivery time & loading port?
A2 : Generally it is within 7 days after received advance payment or L/C. If the goods is not in stock , according to the quantity
it is within 15 days. Loading port:QINGDAO or TIANJIN.

Q3 : Do you have MOQ request ? Can offer free samples?
A3 : Our MOQ is usually ONE ton. Free samples is ok but need pay thecourier charge. Charge can be deduct in future orders.

Q4 : What are your company's main products?
A4 : Our main products are Aluminum products, Steel products, Stainless steel products, Galvanized steel products, Colorized steel Coil, etc.

Q5 : Are you a factory or trading company?
A5 : We have both factory and trading company,own branch factory and warehouse in Shandong Province to provide you nice
goods with best price and good quality.