Hot-dip galvanizing
CCT Atyrau has the biggest hot-dip galvanizing facility in western Kazakhstan, with annual capacity of 24,000 tons of ready-to-install steelwork.
Dimensions of baths and kettle allow to galvanize steel elements up to 12.5 meters long with single dip.
Zinc coating can be applied both in accordance with ASTM A123 or ISO 1461 requirements.
Upon customer's request galvanized structures can be additionally painted with protective and/or safety color coatings.
Hot-dip galvanizing (HDG) is the process of steel anticorrosion protection by immersing the metal in a kettle of molten zinc at a temperature of around 450°C. Thin zinc layer, metallurgically bonded with base metal, assures it's anticorrosion protection for 50 years and more, depending on operation environment.
HDG ensures long-life anticorrosion protection of steel structures and it is recognized as economically most efficient solution at every stage of structure's life cycle:
- During design: Selection of hot-dip galvanizing saves time required to justify acceptability of alternative anticorrosion systems.
- During fabrication: Paint coatings require preliminary abrasive blast cleaning for the steel surface, and time required for paints application and curing may take several days. Galvanizing can be carried out very economically in large batches and application takes few hours.
- During transportation and site erection: Hot-dip galvanized coating bonds metallurgically with the base steel giving a great resistance to mechanical damage. Also zinc coating provide cathodic or sacrificial protection to small areas of steel exposed through drilling, cutting or damage. Unlike organic coatings, small damaged areas need no touch up, no special measures are required to protect the coating, and duration and cost of erection reduce significantly.
- During operation: Hot-dip galvanized structures do not require regular inspection and maintenance, no operation or repair personnel need to be kept or hired. With painted structures their maintenance causes problems and adds to costs, especially when structures are located in remote areas, in severe environment, and when plant shutdown or disruption to production is involved.
- At facility selling: Through their long service life galvanized structures make the whole facility more attractive to investors.
Hot-dip galvanizing applications:
Industrial and Commercial Construction: building, rack, warehouse and hangar frames, trusses, handrails and ladders, cable trays and ladders, flooring plates and grating, fencing, pipe spools, embedded steel items, towers, equipment and instrumentation supports and stands.
Roads and infrastructure construction: road safety barriers, bridges and viaducts, lighting poles, road signs, noise barriers, flagstaffs, framed structures.
Power and Communication: power transmission pylons, communication and video-control towers, connecting and pendant elements.
Machine-Building: vehicle bodies and beds, agricultural and waste water treatment equipment and machine details.
