The method of hot-dip galvanizing is in demand now. Since its appearance in the first half of the eighteenth century, the procedure has not changed, which allowed to improve it as much as possible.
The purpose of hot-dip galvanizing is to protect a product from corrosion for a long time. In addition, after the application of zinc coating, it will not need painting, and will acquire the ability to independently heal cracks arising on the surface.
Before the actual galvanizing pipes and other items must go through several preparatory procedures. First, they are degreased, washed, etched with a solution of hydrochloric acid. Then again washed, dried with streams of hot and cold air, and then cooled to the desired temperature. Only now products can get to the main shop.
Then begins the process of galvanizing. Multi-faceted pipes are suspended and lowered into special baths with hot zinc, which move around the room in huge carts on the rails. The products are kept in solution for some time (from three to ten minutes depending on the size), a special rotating drum evenly applies zinc to their surface. Thanks to advances in science, the temperature of zinc at different levels can vary significantly, which is necessary, since some parts of the structure are in the baths longer. After that, the hot-dip galvanizing objects are dried, then the work is considered complete.
Well-established alarm system, and, in addition, fully remote control help to significantly reduce the likelihood of emergencies. Moreover, in order to reduce the damage to the atmosphere, the shop has several filters that clean all emissions.