Expansion Bolt is a special threaded connector used to fix pipe support/lift/bracket or equipment on the wall, floor and column.
Carbon steel bolts are classified into more than 10 grades, including 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9 and 12.9.
The material is mainly divided into austenite A1, A2, A4;
Martensite and ferrite C1, C2, C4;
Bolt materials commonly used materials: Q215, Q235, 25 and 45 steel, for important or special purpose threaded connection parts,
can choose 15Cr, 20Cr, 40Cr, 15MnVB, 30CrMrSi and other alloy steel with higher mechanical properties.
When in use, it is necessary to drill a hole of the corresponding size on the fixed body with an impact drill (hammer), and then put the bolt and expansion pipe into the hole, tighten the Nut to make the bolt, expansion pipe, installation parts and the fixed body expansion into a whole.
After tightening will expand, the bolt tail has a big head, the bolt outside set a round pipe slightly larger than the diameter of the bolt, the tail part has several openings, when the bolt tightened, the tail of the big head will be taken to the open pipe inside, the pipe is big, to achieve the purpose of expansion, and then the bolt fixed on the ground or the wall, to achieve the purpose of rooting.
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