Purchasing colored galvanized sheets in Ghaemshahr requires a careful examination of the thickness of the zinc coating, the type of electrostatic resin of the furnace, and the physical resistance of the sheet against the constant humidity of the climate of Mazandaran. Cyrus Irons supplies all kinds of standard colored galvanized sections based on the base sheet with thicknesses of 0.4 to 0.7 mm and with customized trapezoidal, shadowline and sinusoidal formings to industrial and construction buyers. The correct selection of the surface coating grade and direct delivery from the regional warehouse minimizes the logistics costs and capital sleep of the industrial projects in this region.
In construction projects and construction of industrial sheds in Qaimshahr, Swadkoh and Babol areas, wear and tear caused by acidic dew drops and high evaporation of sea water is the most important challenge for structural engineers. Our field experiences in the delivery of roof material for sheds have shown that the use of ordinary galvanized sheets without primer layer and polyester paint will show the phenomenon of white scale and localized rust after 36 months. Therefore, the material standards in the coastal and plain areas of the north of the country have structural differences with the dry areas of the central plateau.
Evaluation of the behavior of colored galvanized sheet in the climate of Mazandaran
Color galvanized sheet is a combination of steel core, zinc coating and two layers of furnace paint on both sides. The amount of paint adhesion and the thickness of the zinc coating, which is measured by the so-called coating index, determines the durability of the material in the humid air of Ghaemshahr.
According to metallurgical tests and periodical load analysis, the suitable coating for Mazandaran province should not be less than 100-120 grams per square meter. The bottom primer layer with a thickness of 5 to 7 microns has a stabilizing role, and the paint on the top of the furnace with a thickness of 18 to 22 microns creates a definite resistance against the ultraviolet rays of the Caspian sun and continuous autumn rains.
In practice, it has been observed that various sheets available in the market with a coating of less than 80 grams suffer from small cracks in the paint layer during the roll-forming operation in the workshop. These microscopic cracks quickly become hot spots for rainwater penetration and eventually cause the roof structure to suffer corrosion.
Types of galvanized sheet forming for sheds and workshops
Physical shaping of colored sheets, in addition to architectural beauty, manages the permissible mechanical load and water conduction rate. In the projects located in the industrial centers of Ghaemshahr, such as Rostamkola industrial town, the type of forming is selected based on the slope of the structure and the rainfall flow.
Forming trapezoid and shadowline
Due to its regular geometric steps and high bending resistance, the trapezoid design is the first option for covering the roof of industrial sheds with wide openings. This forming can withstand the load of snow and the intermittent winds of Mazandaran without sagging along the purlins. Shadowline, as a subset of this family, creates reliable sealing on arched and sloping roofs.
Sinusoidal and bulb forming
The sinusoidal design is the most classic model of the roof sheet, which is generally installed in warehouse structures, covering workshop walls and villas in the suburbs of Ghaemshahr. High execution speed, smooth overlapping of overlips and reduction of material deviation are among the technical characteristics of this type of forming.
Palermo and Geneva pottery design forming
For building spaces with vernacular or office architecture of factories, repeating clay design formings are used due to high edge resistance and light reflection. Despite the traditional appearance, these sheets have a much higher safety compared to traditional ceramics during earthquake shocks due to the light and integrated galvanized core.
The benefits of direct supply from Cyrus Irons in Ghaemshahr
Transportation distance of formed sheets is always one of the factors of surface coating damage during load transfer. Direct procurement of goods from warehouses located in Ghaemshahr city eliminates the risks of paint scratches, distortion of forms and delays in the project.
- Immediate access to a variety of standard RAL codes such as RAL 5015 (sky blue), RAL 6005 (moss green), RAL 3000 (fire red) and RAL 9016 (glacier white)
- The possibility of longitudinal cutting without limits according to the foundation plan and the distance of the roof beams
- Eliminating cargo sleeping during transit routes outside the province and preventing the absorption of moisture between sheets during cargo transportation Long
- Visual inspection of sheet thickness and color uniformity in the warehouse before final unloading at work
- Significant reduction of intra-provincial logistics costs to the destinations of Joibar, Swadkoh, Sari and Babol
Technical guide for sheet quality control before purchase
When buying colored galvanized sheets in the market of Mazandaran, checking the physical characteristics prevents the waste of the project budget. To ensure the purity of the material, it is necessary to measure the thickness of the sheet with a micrometer at three separate points along the length of the sheet; Non-standard sheets usually have a loss of thickness (negative tolerance) in the center of the roll.
The second point is to check the protective film or sheet plastic cover. This cover must be stuck on the surface without swelling so that the jaws of the roll forming machine do not damage the matte surface during the forming process. The label of the manufacturing plant (such as Mobarake Isfahan Steel, Haft Almas Qazvin or Amir Kabir Kashan) must have the melting number and steel standard grade.