Carbon steel Galvanized 4 pcs Sleeve Anchor

Generally speaking, expansion screws are metal expansion screws. The fixing of expansion screws is to use the wedge Angle to promote the expansion to produce friction gripping force, so as to achieve the fixed effect. The Screw is threaded at one end and tapered at the other. The outer bread is a tin (some steel pipe), the tin cylinder (steel pipe) half has a number of notches, put them together into the wall hole, and then lock the Nut, the nut pulls the screw outward, the taper pulls into the tin cylinder, the tin cylinder is opened, so tightly fixed on the wall, generally used for guardrail, awning, air conditioning and so on cement, brick and other materials. But its fixing is not very reliable, if the load has a large vibration, may loose, so it is not recommended for the installation of ceiling fans.

Performance class 10.9 high strength expansion Bolt, the material after heat treatment, can reach:
1. Nominal tensile strength of expansion bolt material reaches 1000MPa;
2. The bending ratio of expansion bolt material is 0.9;
3, the nominal yield strength of expansion bolt material up to 1000×0.9=900MPa;
Expansion screws due to small drilling, large tension, after the exposure is flat, if not, can be removed at will, keep the wall flat advantages, widely used in various decoration occasions

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