S350GD S550GD Hot Dipped Galvanized Steel Strip
Product Spotlights
GI steel coil provides high cost performance for construction and appliances.
Hot dipped galvanized steel coil ensures uniform coating without flaking after bending.
Galvanized steel coil is produced by continuously hot-dip galvanizing a base metal, typically cold-rolled or hot-rolled steel coil, to apply a zinc coating on its surface. Common base metal materials include DX51D, DX52D, DX53D, SGH400, SGC400, etc. The DX series is suitable for general stamping and forming processes, while the SGH/SGC series offers higher strength and is intended for structural applications.
The zinc coating provides excellent electrochemical protection. Even if the coating is locally damaged, the zinc layer prevents the base steel from rusting through sacrificial anode action, giving galvanized steel coil outstanding corrosion resistance. Depending on the coating weight (e.g., Z60 to Z275), the product can meet the requirements of indoor or outdoor environments. Furthermore, the surface of galvanized steel coil can be treated with passivation, oiling, or anti-fingerprint coatings to enhance corrosion resistance and formability.
In terms of applications, galvanized steel coil is widely used in the construction industry for products such as roofing sheets, wall panels, downspouts, and lightweight steel framing. In the automotive industry, it is used for floor panels, fuel tanks, and internal structural components. In the home appliance sector, it is commonly found in air conditioner housings, washing machine drums, and microwave oven cavities. Additionally, galvanized steel coil serves as the primary substrate for color-coated steel sheets and composite panels. Thanks to its excellent cost-effectiveness and durability, galvanized steel coil has become an indispensable material in modern manufacturing and infrastructure development.
Q/BQB 420-2003 |
EN 10142:2000 |
EN 10142:1990 |
JISG3302-1994 |
ASTMA653M-2002 |
DC51D+Z(St01Z,St02Z,St03Z),DC51D+ZF |
DX51D+Z,+ZF |
FeP02GZ,ZF |
SGCC |
CS Type C |
SGHC |
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DC52D+Z(St04Z) |
DX52D+Z,+ZF |
FeP03GZ,ZF |
SGCD1 |
CS Type A,Type B |
DC53D+Z(St05Z) |
DX53D+Z,+ZF |
FeP05GZ,ZF |
SGCD2 |
FS Type A,Type B |
SGCD3 |
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distinguish |
Surface and Appearance Requirements |
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