At present, expansion bolts are mainly used in high-end construction abroad, such as Europe, the United States, the Middle East, Japan South Korea, entered the domestic market in 2013. It is widely used in concrete embedding related work. Such as: building curtain wall, interior decoration, air conditioning, lighting, billboard, TV wall hanging, bathroom (Kitchenware) water electricity, monitor other related industries fields.

Advantages 1. Wide applicability. It is suitable for any type of anchor bolt head as long as the thread size of male part is consistent. 2. Selection of construction method. It can be pre-set according to the demand, can be drilled (installed) in a single construction. Its function effect are completely consistent. 3. High construction success rate. There is no hole matching depth attached borehole inclination, the construction completion rate is 100%. 4. High intensity pulling design. Full tooth taper expansion special inverted hook design. 5. Locking locking function. The special design of full tooth taper expansion makes use of reverse thrust effect to lock the workpiece tightly. 6. Perfect design thinking. Short simple, it is suitable for matching all the commercially available screws, DIY construction parts. 7. Ensure anchor bolt expansion. Metal plate pressing products, patented full tooth taper expansion design, strong grasping ability, no idling, no need for professional construction skills. 8. No trouble with disposal. As long as the anchor bolt work piece is withdrawn the filling agent is applied to restore the plane, there is no disturbance of cutting the danger of bumping the protrusion. Compared with the tensile strength, the tensile strength of concrete 25N / mm2 is more than 800kg, the hole diameter is 10.5mm the drilling depth is 40mm. Static vertical load 800 hours / test ≤ 500kg, displacement ≤ 1 mm.

Market products (M8) tensile strength ≥ 600kg, hole diameter 10.5mm, drilling depth 45mm. Static vertical load 800 hours / test ≤ 400kg, displacement ≤ 1 mm. However, due to the fact that the drilling depth must be controlled special tools are needed for the products on the market, the tensile strength will be affected if the expansion is well controlled, even the products will fall out. The length of the new internal screw can control the expansion of the mother part, which can completely expand without causing the mother part to fall out. Test method (universal material testing machine): before production, take 3-5pcs for concrete test block construction test The material machine can be used for pull-out test. After the test results meet the specified tensile data, mass production can be carried out. After mass production, 5-10 pcs of objects should be taken, the relevant test data should be obtained after the third-party inspection agency is commissioned to obtain the relevant test data, the above average data can be obtained.