METAL ROOFING SHEET

Metal roofing Sheets are manufactured using best grade steel and is widely applied in construction industry. Galvanized Corrugated Sheets have excellent corrosion resistance, these Sheets have become the most preferred material for various construction purposes, particularly roofing and walling. The demand for corrugated iron sheet depends mainly on the performance of its end-user (i.e. the construction sector or more specifically the building construction sector). Therefore, the demand for the products under consideration is a derived demand, which depends directly on them performance of its major end – user. The construction sector of the country has undergone tremendous changes and development in recent years. The contribution of the construction sector to the GDP during the period 2001 – 2010 have been growing at annual average growth rate of 13 percent which is above the average annual growth rate of real GDP during the period under consideration (11.4 %), indicating a rise in the share of the construction sector within the overall economy. Moreover, during the GTP period (2010 – 2015), the construction sector is expected to grow at annual average growth rate of 20%. Metal roofing sheet is used for roofing of houses and other construction. These are classified according to their thickness and surface area. Standard gauge sizes are 28, 30 and 32. It is usually manufactured 2 meters iron sheets are mostly used for roofing and fencing. Corrugation is a process of deforming plain sheets in the uniform way or zigzag shapes pattern by rolling mills across their entire width. in length and 1.2 meters in width. Corrugated. Metal roofing sheets are made of thin metal sheets, stiffened by corrugations. The corrugations, such as waves or folds, increase the strength and stiffness of the sheeting material considerably, without these waves, the sheets have limited load bearing capacity and are highly deformable. The sheets are made of mild steel, which is then galvanized to increase the resistance against corrosion and increase the durability or service life. They are widely use as the wall or roof of factory, warehouse, garage, exhibition center, cinema etc. Metal roofing sheets for defining them, these are thin plates of 18 to 26 S.W. G. rolled out in alternate equal curves/semicircular corrugations of elevation & depressions or ridges and valleys by which corrugation & the rigidity of the sheets is increased. The pitch, or the distance between the centers of alternate curves, varies from 3 inches to 5 inches. These sheets are principally used for light roofing purpose and for covering the sides of more less temporary structures. The corrugated galvanized iron sheets are extensively used in various fields e.g. industries sheds, dairy farm sheds, poultry farm sheds etc. for roofing purpose. In recent years, a lot of multi scale projects have taken up the Indian industry by a storm and these levels have given a larger scope for steel companies. The galvanised plain coils / sheets and corrugated sheets (GP/GC) are value – added steel products which are tough, sturdy, light weight, bright and corrosion resistant. In India these are produced in the thickness range of 0.15 mm to 2.0 mm and width range of 800 mm to 1560 mm. The function of the zinc layer is mainly three fold: To retain the steel intact with its full initial strength; to provide the surface a more pleasing appearance and to increase the life of any suitable organic finishing system applied over it. Corrugated steel sheets are frequently used for roofing and siding in buildings because the sheets are strong, lightweight and easy to erect. In many cases they are used as shear diaphragms to replace conventional bracing and to stabilize entire structures or individual members such as columns and beams.