550GD+Z Big Spangle Galvanized Steel Sheet

550GD+Z Big Spangle Galvanized Steel Sheet, compliant with EN 10346 standards, features a minimum yield strength of 550 MPa and tensile strength of 560 MPa. Its prominent large spangle zinc coating (30-275 g/m²) offers superior corrosion resistance and visual appeal. With chemical composition (C≤0.2%, Si≤0.6%, Mn≤1.7%), it is ideal for structural applications in construction (roofing, beams), automotive, appliances, and storage. Customizable in thickness (0.125-4.0mm), width, and surface treatments (painting, oiling), it balances durability and versatility for demanding environments.

Key Attributes

Galvanized Sheet Manufacturer

Galvanized Steel Sheet & Plates, are intended for use where greater corrosion protection is required without painting. A lower cost alternative to stainless steel, galvanized sheet and plates have a rust free protection for up to 30 years, while maintaining strength with a durable surface coating. 


Galvanized sheet production mode, professional manufacturer

Galvanized sheet / plate can be cut, machined or welded by common methods used for regular steel, but adequate ventilation should be used to avoid inhalation of fumes when heated. Sheared edges are not galvanized and can be treated with a cold galvanizing paint to maintain protection if desired. 1/4" to 1/2" plates may have a 3/4" hole present in two corners from the dipping process. All dimensions are before the galvanizing process.


Standard Specification Of Galvanized steel sheet Plate

Thickness0.12-6.0mm
Width600-1250mm
LengthCoil or as Customers' requirement
SurfaceChromated and oiled, and ant-ifinger      
ApplicationStructural use ,roofing, corrugated roofing, commercial use, household appliance, industry


Galvanized steel sheet grade

GradeJIS G3302-94 Q195, Q235,Din17175
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

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