Aluzinc steel coil &antifinger galvalume steel coil

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Quick Details

Standard:
AISI,ASTM,BS,DIN,GB,JIS
Grade:
SGLCH;DX51D+AZ,DX53D+AZ
Thickness:
0.14-4mm
Place of Origin:
Tianjin China (Mainland)
Brand Name:
brilliant steel
Model Number:
various
Type:
Steel Coil
Technique:
Cold Rolled
Surface Treatment:
Galvanized
Application:
Container Plate
Special Use:
High-strength Steel Plate
Width:
600-1500mm
Length:
in coil
Zinc coat:
40-275g
Coil weght:
4-8 tons
Coil ID:
508mm or 610mm
Surface structue:
noirmal spangle,no spangle,skin-passed spangle
aftertreatment mode:
normal passivation,environmental passivation,finger print resistance
surface:
chromated;oiled;dry,skin-pass and non-skin pass

Packaging & Delivery

Packaging Detail:standdard export packaging or as request
Delivery Detail:25 days

Specifications

1.China manufacturer
2.Best service
3.Fast delivery
4.Quantity assured

1.Specification

Galvalume steel coil

Brand Name:

TJBT-GL

Standard:

ASTM A792;

Grade:

SGLCC/ SGLCH/DX51D+AZ/DX53D+AZ/S220GD-550GD

Size:

Thickness:

0.17-2.0mm

Width:

 ≤  1250mm

Length:

Coil or client’s requirements

AluZinc Coating:

30g/m2 to 200g/m2,

Spangle:

regular spangle/minimize spangle and zero spangle

Coil ID:

508 /610mm

Coil Weight:

3-10 Tons

Usage :

Infrastructure : Roofing; External Siding; Garage; Shutter

Household Appliances :Oven; Air-Conditioning Ventilation System; Solar Water Heater; Electronics;

Automobile : Mobile Muffler; Vent Pipe; Catalysis Converter Heater Shield; Bottom Accessories;

Industrial Instrument : Electric Control Cabinet; Industrial Freezer Chest; Dispenser

The plating coat of Aluminium-Zinc Alloy Armor plate is Zn-Al alloy, and its composition is 55% Al, 43.3% Zn and 1.6% Si. The plate is of 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 plating coat. 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°C 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 zinc pot through the elephant’s trunk and begin in the hot-dip coating process. The optimum temperature range of the plating coat is 630°C~660°C. Coated with aluminium-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 is 30°C/s or so, and strips are cooled to about 60°C.

2.Memical composotion and production process

Chemical Requiremetns for structure steel

Composition, %-Heat Analysis Element, maximum, unless otherwise Shown

Designation

C

Mn

P

S

Cu

Ni

Cr

Mo

V

Cb

TiA

NB

G230

0.20

1.35

0.04

0.04

0.25

0.20

0.15

0.06

0.008

0.008

0.025

G255

0.20

1.35

0.10

0.04

0.25

0.20

0.15

0.06

0.008

0.008

0.025

G275

0.25

1.35

0.10

0.04

0.25

0.20

0.15

0.06

0.008

0.008

0.025

G340

0.25

1.35

0.20

0.04

0.25

0.20

0.15

0.06

0.008

0.008

0.025

G550

0.20

1.35

0.04

0.04

0.25

0.20

0.15

0.06

0.008

0.015

0.025

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