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Heavy-Duty Concrete Wedge Expansion Anchor

Heavy-duty fixation: Steel structure beam-column connections, anchoring large equipment bases.
Dynamic load environments: Bridge supports, seismic-resistant structural components.
Outdoor projects: Billboards, curtain wall framing (weather-resistant).
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Product Overview


TEDUN's Mechanical Expansion Wedge Anchor For Concrete is a heavy-duty fastening solution engineered for secure fixation in concrete, natural stone, and solid brick substrates. Unlike chemical anchors that rely on anchoring adhesive, this concrete wedge anchor uses a mechanical expansion mechanism: when the bolt is tightened, the metal sleeve expands to create a tight friction + interlocking bond with the concrete hole wall. This design enables immediate load-bearing after installation, making it ideal for projects requiring fast, reliable fixing—such as steel structure anchoring and dynamic load environments (e.g., bridges, seismic zones). With high tensile strength and weather resistance, it is a cost-effective alternative to chemical anchor bolts for both indoor and outdoor applications.


Heavy-Duty Concrete Wedge Expansion Anchor



Product Advantages


Quick & Efficient Installation

No anchoring adhesive means no waiting for curing—installation takes just four steps: drill, clean the hole, insert the anchor, and tighten. No specialized tools (e.g., adhesive injection guns) are needed, reducing labor time by over 50% compared to chemical anchors. The anchor can bear loads immediately after installation, accelerating project progress.


High Load-Bearing Capacity & Seismic Performance

The mechanical expansion design generates strong mechanical locking force, delivering exceptional tensile and shear strength. In 30 MPa concrete, standard tensile loads range from 7.29 KN to 58.32 KN, with safe tensile loads from 1.81 KN to 14.58 KN. The rigid metal connection resists loosening under vibration or impact, making it perfect for seismic-resistant structural components and heavy equipment bases.


Strong Substrate Adaptability

This concrete wedge anchor works seamlessly with dense substrates like concrete (≥ C25), natural stone, and solid brick. It has lower requirements for drilling depth precision—minor deviations can be compensated by adjusting the bolt insertion depth. Some models are detachable and reusable (if the substrate remains intact), reducing costs for temporary fixtures (e.g., construction scaffolding).


Cost-Effectiveness & Low Maintenance

Eliminating the need for chemical anchor bolts and adhesive cuts material costs by 30%. There is no risk of adhesive degradation (e.g., from temperature changes or moisture), so maintenance frequency and long-term replacement costs are significantly reduced—ideal for budget-conscious projects.


Weather-Resistant Durability

The anchor’s surface is treated with hot-dip galvanizing, providing excellent rust and corrosion resistance. It withstands extreme weather conditions (e.g., heavy rain, high temperatures, UV radiation) and operates reliably in environments ranging from -40℃ to 125℃. This weather-resistant anchor fastener maintains performance for over 10 years in outdoor applications.



Detail Data


TEDUN’s Mechanical Expansion Wedge Anchor For Concrete offers a full range of sizes to meet diverse needs, from 6*65mm to 20*200mm. All models meet strength grade 5.8/6.8, ensuring consistent mechanical performance. The installation hole diameter matches the anchor size (6.0mm for 6*65mm anchors, 20.0mm for 20*200mm anchors), with effective embedment depths ranging from 30.00mm to 120.00mm and maximum fixing thickness from 20.2mm to 75.0mm. In 30 MPa concrete, key performance metrics include:


6*65mm: Standard tensile load = 7.29 KN, Safe tensile load = 1.81 KN

16*200mm: Standard tensile load = 44.37 KN, Safe tensile load = 11.09 KN

20*200mm: Standard tensile load = 58.32 KN, Safe tensile load = 14.58 KN


The base material is high-carbon steel, with a galvanized surface that passes 48-hour salt spray testing (no corrosion), ensuring durability in harsh environments.


Size(mm)GradeInstallation hole diameter (mm)The effective embedment depth(mm)Maximum fixing thickness (mm)Standard tensile load for 30 MPa concrete(KN)Safe tensile load for 30 MPa concrete(KN)
6*655.8/6.86.030.0020.27.291.81
8*755.8/6.88.040.0020.011.222.81
8*805.8/6.88.040.0025.011.222.81
8*905.8/6.88.040.0035.011.222.81
10*905.8/6.810.050.0020.015.693.92
10*1005.8/6.810.050.0030.015.693.92
10*1205.8/6.810.060.0040.020.625.15
12*1005.8/6.812.050.0025.015.693.92
12*1205.8/6.812.060.0035.020.625.15
12*1405.8/6.812.070.0045.025.986.50
12*1505.8/6.812.075.0050.028.827.20
12*1805.8/6.812.080.0075.031.757.94
16*1005.8/6.816.060.0010.020.625.15
16*1255.8/6.816.060.0035.020.625.15
16*1405.8/6.816.080.0030.331.757.94
16*1505.8/6.816.080.0040.031.757.94
16*1805.8/6.816.090.0060.037.889.57
16*2005.8/6.816.0100.0070.044.3711.09
20*1005.8/6.820.050.0015.015.693.92
20*1405.8/6.820.070.0035.025.986.50
20*1605.8/6.820.0100.0025.044.3711.09
20*1805.8/6.820.0120.0025.058.3214.58
20*2005.8/6.820.0120.0045.058.3214.58



Applications


Heavy-Duty Fixation

Used for steel structure beam-column connections and anchoring large equipment bases (e.g., industrial lathes, generators), this heavy-duty concrete anchor transfers static and dynamic loads during equipment operation, ensuring stable performance in factories and heavy machinery plants.


Dynamic Load Environments

As a core fastener for bridge supports and seismic-resistant components, it absorbs vibration from passing vehicles and earthquake shocks, preventing structural loosening. It is widely used in highway bridges, urban overpasses, and earthquake-prone area constructions.


Outdoor Projects

Ideal for fixing billboards, curtain wall framing, and outdoor lighting poles, the weather-resistant anchor fastener resists wind, rain, and UV damage. Unlike chemical anchors, it avoids adhesive aging issues, making it suitable for commercial plazas and highway-side facilities.


Industrial Equipment Installation

Secures production line conveyor supports, heavy storage racks, and assembly line platforms to concrete floors. The adjustable design allows easy alignment with equipment mounting points, enhancing flexibility in industrial layout.


Infrastructure Construction

Used in railway signal tower fixation, municipal road sign installation, and water conservancy project sluice gates. It ensures long-term stability of infrastructure under harsh conditions, reducing maintenance frequency for public facilities.



Why Choose Us


Quality Warranty: All Mechanical Expansion Wedge Anchor For Concrete products come with a 1-year warranty, with free replacement for defects caused by materials or manufacturing.

Fast Delivery: Regular sizes are stocked, with 3-day delivery for standard orders; urgent projects (e.g., post-disaster reconstruction) get priority shipping.

Technical Support: Our team provides load calculation, drilling depth guidance, and on-site installation training to ensure optimal anchor performance.

Customization: We offer non-standard sizes (e.g., longer bolts for thick concrete) and specialized surface treatments (e.g., stainless steel for coastal areas) to meet unique needs.

After-Sales Service: 24/7 customer support via phone or email addresses installation issues and provides application case studies to help customers maximize product value.


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