In our daily lives, we often use things based on galvanized sheet. This is primarily buckets, basins, peaks on the loggias, drainage on the windows. Many useful things are made from this material in various fields of industry.
It is based on
cold rolled steel with different sheet thicknesses. It is used in cases where a stainless, durable and convenient to use material is needed. A galvanized sheet in rolls or bundles in which the sheets are stacked on top of each other goes on sale. Dimensions in length and width may vary. For the manufacture of various parts, sheets of the required sizes are taken and put into processing. It can be a press for stamping parts of the desired configuration. Or a
bending machine on which ebbs, peaks or other products necessary for use in construction are bent. Previously, a piece of metal of the desired size is cut from a roll or sheet. It is easier to use a strip for stamping, especially if small parts are needed.
Galvanized sheet is widely used in the arrangement of the
roof. A folded roof made of this metal is beautiful and not very expensive. It is better to use rolled material. Modern equipment allows you to work directly on the roof, which greatly speeds up the whole process. Having measured pieces of metal equal to the size of the roof, they cut and stack them, immediately rolling them into a fold.
Galvanized sheet, the weight of which depends on the thickness, may have a protective coating. The polyester used for this purpose does not offer a very wide range of colors, but basic shades such as white, brown, gray and black can be found. When other colors are needed, they use painting. For this, finished products are sent to a special chamber. Powder paint allows you to paint the tint or visor in any color according to the paint catalog.
For corrugated board, which goes to fences or to the roof, a galvanized sheet of a certain thickness is also used. Stiffeners give this material a solid base. The configuration and size of the groove are determined by the brand of the sheet and its further application. Galvanized buckets, although less and less, are also used in everyday life, not giving way to aluminum or plastic counterparts.
Marking, which denotes a galvanized sheet, allows you to determine the characteristics of steel and processing methods. From where the metal will go further, its indicators also depend.
Table 1. Classification by appointment
| XH | Cold stamping |
| HP | Cold profiling |
| PC | Coating |
| HE | General purpose |
Products on sale may have a smooth surface or pattern in the form of a crystal lattice. Depending on the thickness of the applied coating, it is customary to divide galvanized sheets into three classes.
Table 2. Classification by coating
| Coverage class | Coating Thickness, mkr. |
| 2 | 10-18 |
| 1 | 19-40 |
| P (Increased) | 41-60 |
When applying coatings for the front and back sides, different classes are used. Often sheets coated with polyester are white or brown in the first class on the front side and gray in the second class on the other. Therefore, when ordering products for which both sides must have the same color, they use powder paint.