Galvalume coating, applied by the continuous hot-dip process, is an alloy consisting of approximately 55% aluminium and 45% zinc by weight.
Steel Specification:
Thickness: 0.16
Width: 600
Aluminum-Zinc galvanized Coating :
Tolerance for thickness,width,flatness and so on conform to the requirements of JIS G3302 or ASTM A792/
Coil ID can be either
The speicfication of ASTM Such as ASTM A792/
Excellent film adhesion
The coating layer is manufactured with fine porous surfaces so as to be high in surface vitality and be very excellent in film adhesion without phosphate treatment.
Excellent corrosion resistance
The surface layer is finer and harder than electrically galvanized steel sheets by using a hot-dip coating method so as to be excellent in white rust resistance at constant temperature and humidity as well as in red rust resistance. Especially, the adhesion with paint is good so as to be very excellent in paint corrosion resistance.
Excellent powdering resistance
This is manufactured in a short time heating and long time heat treatment method so as to be very excellent in powdering resistance.
Diverse mechanical property and high formability
The passing length of heating, crack and cooling zone of furnace before coating is made longer than the existing equipment so as to secure diverse mechanical property and high formability so that diverse desires of consumers can be satisfied.
Beautiful appearance
The flatness equal to the cold rolled steel sheet was realized by completely removing unevenness in the surface layer occurring during iron-zinc alloy using a temper rolling mill of high pressure load ratio after coating. Besides, this has no spangle and has a white gray color similar to EGI so as to be very beautiful in appearance
Corrosion resistance
The improved corrosion resistance of 55% AI-Zn alloy-coated steel coils is derived from the unique combination of the barrier protection of the aluminum and the sacrificial protection of the zinc. The formation of an insoluble aluminum oxide layer provides the barrier protection while the zinc provides a sacrificial protection at cut edges, scratches and areas of coating damage. Outdoor exposure testing of 55% AI-Zn alloy-coated steel onus has been conducted for over 20 years in various atmospheric environments. This testing also demonstrated a superior cut edge protection of 55% AI-Zn alloy-coated steel sheet than the galvanized steel sheet.
Heat resistance
Similar to the aluminum coated steel sheet that can resist high temperature oxidation, 55% AI-Zn alloy-coated steel sheet demonstrates better resistance to high temperature than the galvanized steel sheet.Yogic 55% AI-Zn alloy-coated steel sheet can be used in temperatures up to 315ºC.
Heat transmission and reflectivity
55% AI-Zn alloy-coated steel coil has a high reflectivity value making it an effective barrier against heat.
Surface Treatment:
Chromate treatment,Oiled or Anti-finger print
Surface Finished:
REGULAR SPANGLE:
Regular spangle is also called normal spangle which is naturally formed without any additional treatment during galvanizing.
MINI SPANGLE:
The spangle is restrained and formed as mini spangle by reducing the lead content in the zinc liquid or by blowing the zinc powder from the equipment installed on the zinc pot.
EXTRA SMOOTH:
The mini spangle is further skin-passed to produce the extra smooth surface
Application:
BUILDING & CONSTRUCTION
Floor decks, ceilings, verandas, rolling doors, warehouse, partitions, sheds, gutters, wall, underground piping, sashes, beams, fences, scaffolding, indoor decorations, ducts, ventilating pipes, steel frames and cable trays.
ELECTRICAL APPLIANCES
Freezers, video recorder cases, motor cases, lighting fittings, water heaters, washing machines, refrigerators, stoves, air conditioners, dehumidifiers, fluorescent light housings, electrical heaters, toasters, microwave oven enclosures and switch boxes.
TRANSPORTATION
Containers, under body panels, bus & truck body panels, fuel tanks, noise screens, highway signs, air cleaners, conveyor systems and guard rails.
AGRICULTURAL EQUIPMENT
Barns, drying machines, animal houses, hoppers, irrigation systems, greenhouses, water tanks, sheds, silos, agricultural implements and feeders.
FURNITURE & OTHERS
Vending machines, drums, cans, pails, sauna inner parts, chimney pipes, entertainment machines, solar collectors, office equipment, steel furniture, tool boxes, garages and waste bins.
COMPUTER'S APPLIANCES
Computer shells and communication instruments。
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