The thickness of steel plate can be divided into four categories: thin plate, medium plate, thick plate and extra-thick plate. So how did this classification come about? In fact, the classification of steel plate thickness is a very general statement. Below, we will introduce you to the thickness difference and specification classification of steel plates.
Steel plate thickness specifications are as follows, in millimeters:
1. 0.2mm, 0.25mm; 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.7mm, 0.75mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.25mm, 1.4mm, 1.5mm, 1.6mm, 1.8mm, 2.0mm, 2.2mm, 2.5mm, 2.8mm, 3.0mm
2. 3.2mm, 3.5mm, 3.8mm, 4.0mm, 4.5mm, 5.0mm, 5.5mm, 6.0mm, 7.0mm, 8.0mm, 9.0mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm , 18mm, 19mm, 20mm
3. 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, 32mm, 34mm, 36mm, 38mm, 40mm, 42mm, 44mm, 46mm, 48mm, 50mm, 52mm, 54mm, 56mm, 58mm, 60mm, 70mm, 80mm, 90mm, 100mm, 120mm
1. Thin plate: a steel plate with a thickness of 0.2mm to 3mm.
2. Medium and heavy plate: steel plate with a thickness of 3mm to 25mm.
3. Thick plate: steel plate with a thickness of 25mm to 60.
4. Extra-thick plate: a steel plate with a thickness of more than 60mm.
| Serial Number | Category Name | Thickness Range | Detailed Thickness(mm) |
| 1 | Thin plate | 0.2mm-3mm | 0.2、0.25、0.3、0.35、0.4、0.45、0.5、0.55、0.6、0.7、0.75、0.8、0.9、1.0、1.1、1.2、1.25、1.4、1.5、1.6、1.8、2.0、2.2、2.5、2.8、3.0 |
| 2 | Medium-thick plate | >3mm-25mm | 3.2、3.5、3.8、4.0、4.5、5.0、5.5、6.0、7.0、8.0、9.0、10、11、12、13、14、15、16、17、18、19、20、21、22、23、24、25 |
| 3 | Plate | 25mm-60mm | 26、27、28、29、30、32、34、36、38、40、42、44、46、48、50、52、54、56、58、60 |
| 4 | Extra thick plate | ≥60mm | 60、70、80、100、120 |
In the process of purchasing steel plates, if the unit of measurement of the thickness of the steel plate is not known, there will be obstacles in the communication process. The steel plate thickness units are generally the following two national standard units, but most people still use the old Chinese units, so it is necessary to understand the relationship between them.
1. The most widely used international unit for steel plate thickness is "millimeter (mm)". In China, many people still use the old system of units, and the old system of units is "centimeter". For example, someone said that I want a steel plate with a thickness of 5mm, which means that he wants a steel plate with a thickness of 5mm.
2. The thickness of steel plate generally uses the international unit "centimeter (cm)", and the centimeter is also called the old system in China. Although many people use it, the old system unit is "centimeter". For example, someone asked, if there is a 1 cm steel plate, it means whether there is a 1 cm/10 mm thick steel plate.
The thickness difference of the steel plate means that the actual thickness of the steel plate is less than the theoretical thickness, and the difference is generally 0.25mm or 0.5mm. That is, a steel plate with a thickness of 10mm, the actual thickness is only 9.75 or 9.5 is normal.
Steel plate is a commodity, so the thickness of steel plate will be determined according to market preferences.
For example, comparing the steel plate to an apple, the thickness of the steel plate determines the sweetness of the apple. When the sweet ones sell well in the market, farmers tend to choose the sweet ones to plant, and the unsweet ones will gradually be eliminated. The steel plate manufacturer is the farmer who planted it. After the steel plate has been baptized by the market, the steel factory will stop the production of the steel plates that are not good for sale, leaving only the steel plates with poor thickness.
1. The lower difference is generally 0.25mm or 0.5mm, that is, a steel plate with a thickness of 10mm, the actual thickness is only 9.75 or 9.5 is normal.
2. Are there any steel plates that are not inferior? The answer is yes. Generally, when purchasing a steel plate with a thickness of less than 2mm, the merchant will clearly tell you whether it is a few tenths or tenths of a thickness. Then 2.75 thick is considered as 3 mm thick steel plate, 3.5 thick is considered as 4 mm thick steel plate and so on.