I believe that many people use the assembly structure, the assembly structure of the shelves are bolted. The performance grades of bolts are divided in more than 10 grades: 3.6,4.6,4.8,5.6,6.8,8.8,9.8,10.9,12.9. So why does the powerful Guangdong shelf factory choose Class 8.8 when choosing the bolt hardware?

The general shelf factory will choose 4.8 bolts, so what is the difference between 4.8 bolts and 8.8 bolts? Classes 4.8 and Class 8.8 are the performance grades of the bolts. Class 4.8 is defined as: 4 represents 4 * 100=400mpa, The tensile strength of 400mpa,8 is yield strength ratio is 0.8 and the nominal yield strength of Class 400×0.8=320mpa8.8 bolt is: tensile strength =800mpa, yield strength =800*0.8=640mp.
Because of this, Dingli Guangdong shelving Factory will choose the 8.8 level among many bolts as the sturdy part of our shelves to increase the safety factor of the shelves.

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