Zinc-Alum Coated Coil (GL Steel)
is produce a similar process to that used to manufacture galvanized steel. While both products have steel base, galvanized steel has a coating of 100% zinc, whereas zinc-alum coated steel has an alloy coating of 43.5% zinc, 55% aluminum and 1.5% silicon.
1）Grade：SGCC DX51D, DC51D
5）Technique：Zinc and Aluminum alloy Coating
6）Application：General use, construction industry, household appliance industry, automobile industry and industrial instruments.
7）Surface Treatments：Chromic acid,oiled, bright finish.
8）Spangle：Spangle Free/Min Spangle.
9）Coil Weight：4 tons or as per customer required
a) has superior longer term corrosion resistance in most atmospheric conditions.
b) Has a finely spangled silvery matt finish.
c) is readily paintable using good quality primers and water-base acrylic topcoats.
d) Performs exceptionally well in area not regularly washed by rainwater (heavy drainage area).
The galvalume & aluzinc steel sheet in coil uses the cold-rolled steel sheet as a substrate and solidified by 55% aluminum,
43.4% zinc and 1.6% silicon at 600 °C. It combines the physical protection and high durability of aluminum and the
electrochemical protection of zinc. It is also called aluzinc steel coilplate.
● Strong corrosion resistance, 3 times that of galvanized steel sheet.
● The density of 55% aluminum is smaller than the density of zinc. When the weight is the same and the thickness of the
plating layer is the same, the area of the galvalume steel sheet is 3% or larger than that of the galvanized steel sheet.
Aluminum Zinc Coil
AISI, ASTM, BS, DIN, GB, JIS
Q195 Q235 SGCC SGCH SGC340 SGC400 SGC440 SGC490 SGC570 SGHC SGH340 SGH400 SGH440 SGH490 SGH540 DX51D DX52D DX53D DX54D S220GD S250GD S280GD S320GD S350GD S400GD S500GD S550GD
Big, Medium, Small, Zero
Full hard/ CS-A, B, C/ FS-A/B/DQ/ SS-33, 37, 40, 50 and 80 Grades as per ASTM/EN/JIS/SASO
Coil, Strip, Flat, Sheet, Plate, etc
Building Materials, Steel Structure, Home Construction, Roofing Sheets, etc
Regular spangle, Minimum Spangle, Zero Spangle, Big Spangle
Good Performance, High Precise, High Straightness, High Evenness And Surface Finishing, Uniform Thickness, Easy For Coating Process, High Tensile Strength, High Pressing Property And Low Yield Point