Zincalume Steel Sheet (GL sheet) for Roofing & Wall

• Standard: ASTM, JIS, GB
• Certification: ISO
• Surface Treatment: Galvanized
• Technique: Cold Rolled
• Application: Container Plate
• Edge: Mill
• Model NO.: SGCC, SGCD, DX51/52/53/54D+Z
• Stock: Not Stock
• Name: Galvalume Steel Coil
• Sample: Available
• Coating Thickness: Az50-150
• Width: 300-1250mm
• Length: Per Customer′s Request
• Thickness: 0.18-2.5mm
• Payment: 30% Prepaid, The Balance See Copy of B/L
• Coil Weight: 3-8tons
• Coil ID: 508mm,610mm
• Transport Package: Standard Export Packing
• Specification: ASTM A792
• Trademark: dingang or as customer′s request
• Origin: China
• HS Code: 72106100
• Production Capacity: 500, 000 Tons/Month

Product Description

Profile

Zincalume steel, galvalume steel
1)Commodity: Zincalu coating steel in coil, 55% Alu, 45% Zinc
2)Standard: JIS G3321 SGLCC, ASTM A 792 CS, EN10215 DX51D+AZ
3)Thickness range of the zincalu steel: 0.18mm to 3.0mm
4)Tolerance of thickness: +/-0.01mm
5)Width range: 700mm to 1250mm, we can slit our reular width into strip
6)Tolerance of width: +/-3.00mm (aiming to +/-2.00mm)
7)Coil weight of Zincalu steel: 3-6 tons per coil, Also can According to Clients' requests.
8)weight per 20' container: 25- 26 tons max
9) Coating material: 55% Alu, 45% Zinc
10) Coating thickness: AZ50 - AZ150
11) Surface treatment of the zincalu steel: Chromated. Oiled, bright finish, Fingerprint resistance
12)Coil ID: 508 mm
13)coil or sheet are available
14)Packing: Seaworthy, in container
15)Note: Special width can be requested, the small order can be negotiated.


Summarization:
Aluminium-zinc alloy armor plate, is called Al-Zn coated plate for short Strips, 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 20~50º 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 630º C~660º 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 30º C/s or so, and strips are cooled to about 60º C.

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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