DX54D+Z Galvanized Steel Coil – Extra-Deep Drawing Zinc-Coated Coil for Forming & Automotive Applications

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 PRODUCT DESCRIPTION

DX54D+Z galvanized steel coil is a hot-dip zinc-coated low-carbon steel product conforming to EN 10346. Known for its extra-deep drawing ability and smooth surface quality, DX54D is specifically developed for demanding cold-forming applications such as automotive inner panels, washing machine drums, or HVAC housings.

The +Z refers to a hot-dip zinc coating (typically Z100–Z275), which enhances corrosion resistance, improves longevity in humid environments, and allows for secondary processing such as painting, punching, and welding.

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 SURFACE STRUCTURE

1. Zinc layer

2. Cold-Rolled Steel 

3. Zn Coating Layer

|THE SURFACE OF GALVANIZED STEEL COILS CAN BE DIVIDED INTO FOUR TYPES

1. No Spangle:The galvanized steel coil’s surface with no pattern is indistinct zinc grains while the entire surface has a smooth appearance.

2. Small Spangle:The surface of the small-pattern galvanized steel coil is fine zinc grains with a fine pattern.

3. Regular Spangle:The surface of the galvanized steel coil displays medium-sized zinc grains in a regular pattern.

4. Big Spangle:It exhibits a larger pattern since it has larger zinc grains on the surface of the galvanized steel coil.

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 APPLICATION

DX54D+Z galvanized steel coils are used in cold forming and stamping applications where high ductility and consistent surface quality are essential. Typical uses include:

• Automotive inner body parts – door panels, trunk lids, reinforcement plates

• White goods & appliances – washing machine drums, refrigerator panels, oven bodies

• HVAC & ventilation systems – air ducts, housings, metal frames

• Electrical enclosures & cabinets

• Cold-formed profiles – furniture structures, storage systems

• Packaging and metal forming products

With its combination of formability, weldability, and corrosion resistance, DX54D+Z is one of the most versatile materials for precision stamped and formed parts.

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 PRODUCT DISPLAY

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 PRODUCT PROCESS

• Raw material selection: low carbon cold rolled steel coil as base material

  
  

• Cleaning and annealing: improve surface and formability through pickling and annealing

  
  

• Hot dip galvanizing: the steel coil passes through the molten zinc pot to achieve zinc coating

  
  

• Air knife zinc control: the air knife controls the uniform thickness of the zinc layer

  
  

• Surface treatment: passivation, oiling or chemical passivation treatment

  
  

• Coiling and packaging: customized weight, marking and packaging according to customer requirements