Galvanized coatings are applied to iron and steel primarily to provide protection against corrosion of the basis metal. Hot Dip Galvanizing is a process in which an adherent, protective coating of zinc and zinc compounds is developed on the surfaces of iron and steel products by immersing them in a bath of molten zinc. The protective coatings usually consist of several layers. Those closest to the basis metal are composed of iron-zinc compounds these in turn are covered by an outer layer consisting almost entirely of zinc. The complex structure of layers that comprise a galvanized coating varies greatly in chemical composition and physical and mechanical properties, being affected by chemical activity, diffusion, and subsequent cooling. Small differences in coating composition, bath temperature, time of immersion, and rate of cooling or subsequent reheating can result in significant changes in the appearance and properties of the coating. Hot dip galvanized coatings are produced on a variety of steel mill products, using fully mechanized and mass production methods. Hot dip galvanized zinc coatings have their longest life expectancy in rural areas where sulfur dioxide and other industrial pollutant concentrations are low. These coatings also give satisfactory service in most marine environments. Although the life expectancy of hot dip galvanized coatings in more severe industrial environments is not as long as for less aggressive environments, the coatings are still used extensively in those exposures, because in general, no more effective and economical method of protection is available. India's steel pipe industry is primarily engaged in manufacturing seamless or welded steel pipes or tubes or ferrous metal pipes or tube fittings. Steel pipes are primarily of two types, seamless and welded. Other specific types extend the basic classification to include: (a) cast iron pipes, (b) stainless steel tubes, (c) ERW (electric resistance welding) steel pipes, (d) galvanized pipes, (e) API pipes, (f) SAW (submerged arc welded) pipes, and (g) spun pipes. Welded steel pipes include a wide variety of pipes and tubes. Welded pipes are normally manufactured from HR and CR coils by ERW. Galvanized pipes are zinc-coated to prevent corrosion. ERW tubes are meant for high performance applications, such as trusses and columns in housing, industrial and construction sectors, chassis for two-wheelers and light commercial vehicles, propeller shafts and axles. According to observation of engineering goods statistics, we can conclude about the essentiality of the galvanizing process as companys work or on the job work base. It can be concluded that galvanization process is partially proportional to the increase of demand of the engineering goods or most or ancillary item production the steel base. It can be concluded that demand of galvanizing industries will be increased 10% per annum. On that base it can be predicted that there is good scope for galvanizing industries as job work base.