Expansion bolts are composed of countersunk bolts, expansion tubes, flat washers, spring washers and hexagonal nuts. Expansion bolts are special threaded connectors used to fix pipeline supports/hangers/brackets or equipment on walls, floors and columns.When using, you must first use an impact drill (hammer) to drill holes of corresponding sizes on the fixed body, then install the bolts and expansion tubes into the holes, and tighten the nuts to expand the bolts, expansion tubes, mounting parts and fixed bodies into one.After tightening, it will expand. There is a big head at the tail of the bolt, and a round tube slightly larger than the diameter of the bolt is placed outside the bolt. There are several openings at the tail. When the bolt is tightened, the tail of the big head is brought into the open pipe, which expands the pipe to achieve the purpose of expansion, and then fix the bolt on the ground or wall to achieve the purpose of rooting.
