Galvalume Steel Sheet in Coil (DX51D) for Production Roofing and Wall Panels

• Type: Steel Coil
• Standard: ASTM, AISI, GB, JIS, DIN, BS
• Certification: ISO, RoHS, IBR
• Surface Treatment: Galvanized
• Technique: Cold Rolled
• Application: Ship Plate, Flange Plate
• Model NO.: DX51D
• Special Use: Wear Resistant Steel
• Stock: Not Stock
• Thickness: 0.16-1.5mm
• Tolerance: +/-0.05mm
• Zinc Coating: 50-280GSM
• Spangle: No
• Transport Package: Seaworthy Packing
• Specification: JIS
• Trademark: Dingang
• Origin: China
• HS Code: 72106100
• Production Capacity: 5000000 Ton/Year

Product Description

Product 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 630-660ºC.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.
 
Standard: ASTM A792,JIS G3321,GB/T14978-2008,EN10326-2004
Grade: SGLCC,SGLCD,SGLCDD,SGLC400~SGLC570,DC51D+AZ~DC54D+AZ
Thickness: 0.15-2.5mm
Width: 600-1250mm(Usual:914mm,1219mm,1220mm,1250mm)
Base Metal: Cold-Rolled Steel
Al-Zinc Coating: Coil Internal Diameter
Coil Internal Diameter: Coil Internal Diameter
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 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

Product Photos: