With many advantages (compared to hot-rolled), cold-rolled sheets - increased strength characteristics, greater accuracy in size, better surface quality and a disadvantage - the worst corrosion resistance. Cold-rolled galvanized and polymer-coated sheets completely eliminate this disadvantage, increasing resistance to aggressive media by tens of times. Such cold rolled sheets are produced in rolls. Consider this rental in more detail.
Application of galvanized cold rolled steel
Galvanized steel is widely used in construction for roofing and finishing industrial and office buildings, as well as in the creation of ventilation and air conditioning systems. Galvanized sheets are used in the automotive industry (body parts are made of them). Also, galvanized steel is used in high-quality household appliances, due to which its service life is significantly increased (unlike models made of plastic).
Types of galvanized steel coils
Galvanized steel by area of use are divided:
- for general purpose;
- for cold stamping;
- for cold profiling;
- for painting.
In turn, steel for cold forming is divided into:
- normal hood;
- deep drawing;
- especially deep drawing.
By coating thickness, galvanized steel is divided into classes:
- increased - coating thickness of 0.04-0.06 mm;
- 1st - 0,018-0,0 mm;
- 2nd - 0.01-0.01 8mm.
Also for this rental is regulated by the uniformity of the thickness of the protective coating. By this criterion, galvanized steel is of normal thickness variation (HP) and reduced thickness variation (SD). If galvanized steel is used for finishing work, appearance is important to it. You should know that galvanized steel is:
- without crystallization pattern;
- with a crystallization pattern.