Stainless Steel Carbon Steel Drop in Anchor Concrete Anchor Bolt

This series of internal-expansion expansion screws (also known as top-expansion or internal gecko screws) are one-piece internal tightening fasteners specifically designed for hard substrates such as concrete and stone. Unlike traditional external expansion screws, they adopt an "overall sleeve-type" design. By screwing in the matching bolts, the end of the sleeve is evenly expanded, forming a mechanical interlock from the inside, achieving a firm fixation of equipment, supports, and walls / floors. After installation, only the threaded holes are exposed, without any extra protruding components. They are suitable for exposed installation scenarios with requirements for appearance.

The product covers two material versions: 304 stainless steel model and carbon steel galvanized model. The surface of the sleeve is equipped with anti-slip rolling patterns. During installation, it can be embedded in the hole wall to form double friction forces, while avoiding the sleeve from slipping in the hole. The internal threads adopt a precise tapping process, perfectly matching standard bolts, forming a tight interlock without slippage. It is a core component in building, equipment installation, and decoration projects that balances the strength of fixation and the aesthetic appearance.

Our Anchor Bolt is a testament to modern engineering design principles, combining functionality, durability, and ease of use. The overall design starts with the selection of advanced materials that offer superior mechanical properties. The shank of the bolt is precision-machined to have a consistent diameter and smooth surface finish, which not only enhances its aesthetic appeal but also reduces the risk of stress concentrations. The threading is cut with extreme accuracy using computer-controlled machinery, ensuring a perfect fit with the mating nuts and washers. The anchor end of the bolt is designed with a focus on maximizing the bond strength with the foundation material. For example, in the case of adhesive anchor bolts, the end is designed to have a specific shape and surface texture to optimize the adhesion of the chemical adhesive. In mechanical anchor bolts, the design of the expansion mechanism or the anchor head is carefully engineered to provide maximum pull-out resistance.

1. Advanced Material Technology: We utilize the latest advancements in material science to offer anchor bolts made from high-performance alloys and steel grades. These materials are heat-treated to achieve the desired strength, ductility, and toughness, ensuring that the bolts can withstand the most demanding applications.

2. Innovative Coating Systems: Our anchor bolts are often equipped with innovative coating systems that provide multiple layers of protection. These coatings not only offer excellent corrosion resistance but also have properties such as anti-galling, which prevents the threads from seizing during installation and removal.

3. Load-Testing and Quality Assurance: Every batch of our anchor bolts undergoes rigorous load testing to ensure that they meet or exceed the specified performance criteria. In addition, we have a comprehensive quality assurance program in place that includes inspection of materials, manufacturing processes, and final product dimensions. This ensures that our customers receive anchor bolts of the highest quality.

4. Modular Design Options: Some of our anchor bolt designs offer modular features, allowing for easy customization and adaptation to different project requirements. For example, modular anchor systems may include interchangeable anchor heads or extension pieces, which can be combined to create the ideal anchor bolt for a specific installation.

1. High-Rise Building Construction: In high-rise building construction, our anchor bolts are used to secure the structural steel framework to the foundation. The high load-bearing capacity and superior performance of our bolts are essential for ensuring the stability and safety of these tall structures.

2. Offshore Oil and Gas Platforms: Offshore oil and gas platforms operate in extremely harsh marine environments. Our anchor bolts, with their advanced corrosion resistance and high-strength materials, are used to secure the platforms to the seabed and to anchor various equipment and structures on the platform.

3. Sports Stadiums and Arenas: In the construction of sports stadiums and arenas, anchor bolts are used to secure the seating structures, scoreboards, and other large-scale components. The ability of our anchor bolts to withstand dynamic loads and vibrations is crucial for ensuring the safety and comfort of the spectators.

4. Data Centers and Server Farms: Data centers and server farms require stable and secure foundations for their equipment. Our anchor bolts are used to anchor the racks, cabinets, and other infrastructure components, ensuring that the data center remains operational even in the event of an earthquake or other seismic activity.

No exposed installation, balancing both fixation strength and aesthetics

After installation, only the internal threaded holes are exposed, without any extra protruding components, which will not damage the flatness of the workpiece surface. It is suitable for decoration projects, equipment installation and other scenarios with requirements for appearance. At the same time, it does not occupy additional space and avoids interference between the external expansion screws and the workpiece.

Rolling and anti-slip design, dual anti-turning and anti-loosening

The surface of the sleeve adopts anti-slip rolling patterns. During installation, it can be embedded in the concrete / stone hole wall to form mechanical interlocking friction force, preventing the sleeve from slipping or rotating in the hole; combined with the tight engagement of the internal thread and the bolt, it still maintains stable locking force under long-term vibration conditions and is not prone to loosening and falling off.

Stainless steel + galvanized dual versions, fully compatible with all working conditions

The stainless steel version is naturally resistant to salt spray and corrosion, suitable for outdoor and coastal humid environments, and is not afraid of sun exposure and rain; the galvanized version has outstanding cost-effectiveness, and its rust prevention performance meets the requirements of regular indoor and outdoor working conditions. No additional customization is required to cover different anti-corrosion needs.

Installation is convenient and efficient, no need for complex tools

After drilling with a standard drill bit, insert the internal expansion sleeve and screw in the bolt to complete the installation. No special equipment is required, and a single person can operate. Each installation only takes a few minutes, suitable for construction and equipment installation batch fixation scenarios, significantly improving construction efficiency.

Wide range of specifications, strong versatility

Thread specifications cover M6-M16, with lengths of 25mm-80mm available. Suitable for different substrate thicknesses and fixation depths. You can flexibly choose according to the fixation requirements without additional customized accessories, reducing procurement and inventory costs.

Q1: How do I install adhesive anchor bolts correctly?

A: To install adhesive anchor bolts correctly, first, drill a hole in the base material with the appropriate diameter and depth as specified by the product instructions. Clean the hole thoroughly to remove any dust or debris. Then, insert the adhesive cartridge into the hole using a caulking gun. Next, insert the anchor bolt into the hole, ensuring that it is centered and reaches the bottom. Allow the adhesive to cure according to the manufacturer's recommended time before applying any load to the bolt. If you have any doubts about the installation process, our technical support team can provide you with detailed guidance.

Q2: Can your anchor bolts be used in earthquake-prone areas without additional reinforcement?

A: While our anchor bolts are designed to have a certain level of seismic resistance, in earthquake-prone areas, additional reinforcement measures may be required depending on the specific seismic design requirements of the project. It is advisable to consult with a structural engineer and refer to the local building codes and regulations. Our technical team can also provide you with information on our anchor bolts' performance in seismic conditions and recommend suitable solutions.

Q3: What is the warranty period for your anchor bolts?

A: The warranty period for our anchor bolts may vary depending on the product type and the application. Generally, we offer a warranty that covers defects in materials and workmanship for a specified period. Please refer to our warranty policy or contact our customer service department for more details on the specific warranty terms for the anchor bolts you are interested in.

Q4: Can I use your anchor bolts for DIY projects?

A: Yes, our anchor bolts are suitable for DIY projects. However, it is important to ensure that you have the necessary tools and knowledge to install them correctly. Make sure to follow the installation instructions provided with the product carefully. If you have any questions or need assistance during the installation process, our technical support team is available to help you.