Hot dip (or hot) galvanizing is the technology to dip the pretreated original plate of carbon steel into meltedliquefied zinc to obtain a protective zinc coating.

For good anticorrosion performance, galvanized steelsheet is vastly applied into the industries of home appliance, decoration,advertisement, and civil construction, etc. Particularly, the home applianceindustry (outer shell of air conditioner, outer plate of refrigerator, outershell of washing machine, computer, and microwave oven, etc) and color coatedplate has large demands on galvanized plate.

Hot dip aluminum zinc silicon steel plate -Galvalume(Referred to GL steel plate), is steel plate to hot-dip coat aluminum (Al 55%),zinc (Zn 43.5%), silicon (Si 1.5%) alloy on the surface of the steel plate. Itis a steel matrix composite, has excellent corrosion resistance. Hot aluminumzinc alloy steel plate performs outstanding in atmospheric corrosion resistance,thermal oxidation resistance of the aluminized steel plate and electrochemicalprotection of the galvanized steel plate.

Product Description
Line Main Properties :

1. Line Type : horizontal, vertical, combination of vertical and horizontal

2. Specification / Thickness : cold rolled strip / min. 0.12mm, max. 2.5mm
hot rolled strip / min. 1.5mm, max. 5mm

Width : min. 550mm, max. 1500mm

3. Speed in Process Section: max. 200m/min (240m/min for GL)

4. Continuous Annealing Furnace:

Furnace Type: horizontal, vertical, combination of vertical and horizontal (L type)

Heating Method: Gas non-oxidation heating (NOF), Gas radiant tube heating (RTF), Electric radiant tube and electric resistance tape heating

Cooling Method: Shielding gas regular air jet cooling, rich hydrogen high speed air jet cooling

5. Zinc pot: jet flow ceramic induction zinc pot (GL line with pre-melting pot)

6. Air knife: single injection advanced air knife, multi-cavity air knife

7. Skin Pass Mill: 300T-800T, 4-roll wet skin pass

8. Energy saving method: high efficiency radiant tube combustion air heat exchanger, fume duct combustion air heat exchanger, fume duct hot air and hot water heat exchanger, hot shielding gas recycle injection pre- heating strip, fume heat radiant before non-oxidation heating pre-heating strip, light fiber furnace lining

We provide two kinds of technologiesof hot dip galvanizing (galvalume) lines: "United States Steel Corp"and independently researched and developed “JJRS-Sendzimir” .