Classification

Zinc-Alum Steel Series
  • Name:
    Galvalume steel sheet
  • Model: SGLCC
  •   Contact Us
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Production Introduction

Galvalume steel is the plating coat of aluminum-zinc alloy armor plate,and its composition is 55% Al,43.3% Zn and 1.6% Si.The plate with smooth surface and excellent corrosion resistance of the atmosphere,which is 2 to 6 times higher than hot-dip galvanized sheet of the same thickness of coating.After through three processes,including payoff reel,crop shear and welding,enter into the continuous annealing furnace.During the annealing process,strips are heated closer to the recrystallizing temperature,and then heated to 20~50 above the recrystallizing temperature in the reducing furnace.After keeping the same temperature for 170s,strips are naturally cooled to the normal temperature in the slow cooling process.Afterward,strips enter into the ZN-AL pot through the elephant's trunk and begin in the hot-dip coating process.The optimum temperature range of the plating coat is 630-660℃.Coated with aluminum-zinc alloy,strips enter into the cooling tower by the steady roll and air knife.After fast cooled with wind or water,they are directly produced into Al-Zn armor plates.The general rate of cooling 30/s or so,and strips are cooled to about 60.

 

Specification

Brand Name

Dingang


Standard

ASTM A653,JIS G3302,GB/T3830-2006


Grade

SGLCC,SGLCD,SGLCDD,SGLC400~SGLC570,DC51D+AZ~DC54D+AZ


Thickness

0.18-2.5mm


Width

600-1250mm(Usual:914mm,1219mm,1220mm,1250mm)


Base Metal

Cold-Rolled Steel


Al-Zinc Coating

30-150gsm(both sides)


Coil Internal Diameter

508mm/610mm


Coil Outer Diameter

As Per Customers' Requirements(Max 1880mm)


Surface Treatment

Chromate Passivated,Non-Chromate Passivated,Oiled,Anti-Finger Print And   Etc.


Tolerance

Thickness:+/-0.05mm,Width:+5/-2mm,Total Quantity:+/-10%,Alu-Zinc   Coating:+/-10%


Surface Finish

Regular Spangle,Skin Passed Spangle,Minimized Spangle


Delivery Details

Within 25 Days After Receive The Advance Payment


Packing

Standard Seaworthy Export Packing:3 Layers Packing.Inside is Kraft   Paper,Water Plastic Film Is In The Middle And Outside Gi Steel Sheet To Be Covered By Steel Strips With Lock.



Surface Finish And Treatment

Item

Classification

Symbol

Coating Type

Al-Zn Alloy

AZ

Surface Finish

Regular Spangle

-

Skin Passed Spangle

S

Minimized Spangle

-

Surface Treatment

Chromate Passivated

C

Non-Chromate Passivated

C5

Chromate Passivated + Oilling

CO

Non-Chromate Passivated + Oilling

CO5

Anti-Finger Print

N

Non-Chromate & Anti-Finger Print Treatment

N5

Oilling

O

No Treatment

U

Coating Type

Recommended Coating Weight (g/㎡)

Al-Zn Alloy

30/30,50/50,60/60,80/80,100/100,120/120,150/150

The Weight Of Coating Is About 50 g/㎡,And The   Thickness Is 13.3μm.

Nominal Thickness,mm

The Thickness Tolerance Is Dedicated For The Following Nominal Widths,mm

Common Precision PW.A

High Level Precision PW.B

≤1200

1200<T≤1500

1500

≤1200

1200<T≤1500

1500

0.30~0.40

±0.04

±0.05

±0.06

±0.030

±0.035

±0.040

0.40~0.60

±0.04

±0.05

±0.06

±0.035

±0.040

±0.045

0.60~0.80

±0.05

±0.06

±0.07

±0.040

±0.045

±0.050

0.80~1.00

±0.06

±0.07

±0.08

±0.045

±0.050

±0.060

1.00~1.20

±0.07

±0.08

±0.09

±0.050

±0.060

±0.070

1.20~1.60

±0.10

±0.11

±0.12

±0.060

±0.070

±0.080

1.60~2.00

±0.10

±0.13

±0.14

±0.070

±0.080

±0.090

2.00≤T≤2.50

±0.12

±0.13

±0.14

±0.070

±0.080

±0.090

The Thickness Tolerance Of Over 50% More Than The Specified Value Is   Allowed At 10m Close To The Weld Seam









Mechanical Properties

Tension Test

Grade

Yield Strength

Tensile Strength      

Elongation %

 Mpa

 Mpa

 No Less Than

DC51D+AZ

-

270~500

22

DC52D+AZ

140~300

270~420

26

DC53D+AZ

140~260

270~380

30

DC54D+AZ

120~220

260~350

36

 

Product Advantages

1.Continuous Galvalume

Using techniques perfected by years of experience, Dingang Steel’s hot-dip galvalume  steel sheet is formed on a line that is continuously galvaluming to guarantee smooth, high quality end products.

Dingang Steel is committed to offering galvalume steel sheet with a broad range of base metal qualities, including commercial, lock forming, drawing, and structural quality. Moreover, each product undergoes a chromatic process for protection against rust.

2.Superior Formability

Highly workable steel sheet and strips are used as base metals for all galvalume steel sheet produced at the Cold Rolling Facility of Dingang Steel. The base metals in coil are continuously annealed, galvalume, and properly leveled. The galvalume sheet provides superior formability with base metals.

3.Excellent Corrosion Resistance

All galvalume steel sheet is treated with chromic acid for protection against rust, to maintain original surface luster for a longer period.

4.Consistent Quality

Production is carried out using a rigorous quality control process and a strict quality inspection based on high quality production standards. As a result, product quality, dimensions, and other properties strictly conform to customer demand.

 

 

Product Application

1. Buildings And Constructions

Floor Decks, Ceilings, Duct Work, Roofing, Siding, Sashes, Beams, Fences, Verandas, Shutters, Awnings, Partitions, Indoor Decorations, Pipes, Ventilators, Sheds, Culverts.

2. Transportation

Body Pane, Air Cleaners, Oil Filters, Fuel Tanks, Containers, Highway Barriers.

3. Appliances

Light Fittings, Washing Machines, Dryers, Coolers, Vending Machines, Water Heaters, Stoves, Refrigerators, Freezers, Tool Boxes.

4. Agriculture

5. Barns, Dryer Panels, Animal Houses, Hoppers. Bar Supporters, Irrigation Systems, Green Houses.

6. Others

Furniture And Office Equipment, Entertainment Machines, Car Ports, Garden And Storage Sheds 



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