Galvalume Coil/Aluzinc Steel Coil

Yearly capacity: 700,000 tons
Thickness: 0.16-2.5mm
Aluzinc coating: AZ30 – AZ185


Galvalume is steel coil with a lamination of Al-zinc alloy. Currently, 55% Al-zinc is most widely used. In Jianglin, we are one of the leading manufacture of Al Zn billet.
With the different factory requirement, Al-zinc alloy formula can be different, which can increase the galvaluming process meanwhile, reduce the chance for stopping the production line.

The Basic Parameters


GradeDC51D+AZ, DC53D+AZ, S250GD+AZ,S300GD+AZ, S350GD+AZ, S550GD+AZ
Inside Diameter(mm)508/610mm
Outside Diameter(mm)2000mm
Weight≤25ton per coil
Spangleregular spangle, small spangle, big spangle
Surface Treatmentchromated, oil, Chemical treatment and oil, dry, anti-finger print
Aluzinc thickness30/30, 40/40, 50/50, 60/60, 75/75, 90/90, 110/110

Comparison between Galvanized coil and Galvalume coil

1. Coating type

Aluzinc coating is 55% Al-zinc content, Galvanized coil is pure zinc.
Aluzinc coil can have better anti corrosive ability, based on research.


2. Better production efficiency

For producing Galvanized coil, the furnace need be higher temperature than Galvalume coils. When producing Galvanized coil, the furnace need twice cleaning process at least each month. However, when producing galvalume coil, there is less chance for cleaning the furnace, which can save factory much cost.


Application Guidance:

DC51D+AZ and DC52D+AZ are mainly used for normal cold processing , most widely commercial products including home appliance, furniture. S250GD, S300GD, S350GD, S550GD are mainly used for structure, or construction.


Jianglin Corportion has 3 Production Lines.

SpecificationRolling productionGalvanizing productionPPGI &PPGL production
Installation time200220082012
Capacity700,000 tons650,000 tons350,000 tons
Thickness0.12-5.0mm(mostly 0.3-0.8mm)
Coil weight3-15 tons
Base materialCold rolled, GI, Aluzinc coil
Paint TypePE, SMD, HDP, PVDF
Function SurfaceDifferent printed pattern(marble, wooden grain), antifinger, static free, chameleon

1.Cold Rolling Production

Jianglin is equiped with 3 production lines of 6 rolls rolling machinery guarantee the precise thickness of the coils. Yearly processing capacity is more than 700,000 tons.

2.Galvanizing Production Line

Jianglin is equipped with 3 production lines of galvanizing including one Zinc coating line and two Aluzinc production line. Yearly production is around 600,000 tons. Some of the cold rolled coils are sold to different factories.
For thickness, we focus on 0.3-0.8mm. Most of Shandong market galvanized coil are from Jianglin.

3.PPGL and PPGI Production Line

Jangling PPGI &PPGL is mostly for oversea clients, which has high quality requirement on zinc coating thickness.


Jianglin Steel corporation is strictly applying 6S management system. For past 5 years, though the global steel market is under very tough environment, we have reached up to 5%-9% revenue increase.



There are basically two kinds of packing methods.

Standarded sea freight packageSimple package for short delivery



For each and every batch of GI, PPGI, PPGL, we will check all the thickness, surface, and other parameters, just to guarantee the quality. Meanwhile, we have compelte order tracking system to make every coil trackable. Any mistake happening, we will be responsible.


Jianglin with production capacity of 700,000 tons per year, we have been collaborating the listed shipping companies in the world including COSCO, WORLD WIDE LOGISTICS, CMA, and other shipping companies. During the peak season when containers are hard to book, we always enjoy the previlige to book the shipment with a suitable price and schedule

Payment Terms

Jianglin is ready to accept any reasonable payment terms including LC , just hope for a win win situation. Meanwhile, we also collaborate with Alibaba. Alibaba safety guarantee order is welcome.


1.What is the minimum order quantity (MOQ)?
– Normally, the MOQ for one coil 1 ton.

2.What is the payment method?
– For new customers: 30%T/T deposit 70%T/T Before shipment.
– For partners and distributors, 30%T/T deposit 70% T/T Against B/L Copy.

For strategic partner, we can accept 30days LC.

3.What is the acceptable currency?
– We accept USD, EUR and RMB.

4.What is the delivery time?
– 5-10 days in advance depending on the stock status.

5.Where is the loading port?
– Normally, our loading ports are Tianjin, and Shandong. Or client can assign any port in China.

6.What is the delivery term?

7.Do you offer free samples?
– Yes, based on our stock status, we will send our customer free samples. The express fee is to be paid by our customers.

Production Quality Problem

Jianglin Steel is guaranteed for quality problem, and provide client with worry free solution. From production process to quality control, our QC will be fully responsible for removing this problem.

1.Galvanized Coil Problem

For galvanized coil, the most common problem is the RUST.

The problem pictures are as followed:

galvanized coil problem

galvanized coil problem

The reason leading to this problem is mainly due to two aspects.

  1. ZINC COATING. If the zinc coating is low and the humidity of container or environment will rust all the surface.
  2. PACKING. Without cooling down will result with steam water into the coil, after several layer of package which will make this situation worse.

2. Galvanized Corrugation Problem

The problem pictures are as followed:

galvanized corrugation problem
galvanized corrugation problem

After corrugation, the zinc coating will come out, the reason to this problem is mainly due to the corrugation machine and the zinc coating process has some problem.

3. GI Pipe Rust Problem

The problem pictures are as followed:

GI pipe rust problem

This kind of rust is mainly due to the zinc coating is too low, Chinese lower cost zinc coating cannot resist any corrosion environment.

4. Galvanized Strip Edge Problem

The problem pictures are as followed:

galvanized strip edge problem

Galvanized strip for tubing, after slitting, the edge will be exposed to air, therefore, rust is is normally produced, normally we will paint a thin layer of silver paint to cover the exposed edge to get rid of the rust.