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Welcome to Hefei SENOTECH New Materials Co., Ltd, your reliable partner in high-strength anchoring solutions. Established in 2020, we have rapidly expanded our export reach to over 15 global markets including North America, Europe, and Oceania, with an annual export value exceeding US$1 Million. Our Mechanical Anchor for Bridge Construction with ETA Approval and Yellow Zinc Plated Finish is engineered to meet the extreme demands of infrastructure projects. Available in full sizes, this anchor delivers exceptional load capacity, long-term durability, and easy installation for critical applications like bridge decks, abutments, and retaining walls.
This mechanical anchor (also known as a wedge anchor or expansion anchor) is designed for high tensile and shear loads in cracked and uncracked concrete. It features a yellow zinc plated finish that provides excellent corrosion resistance, making it suitable for outdoor or humid environments common in bridge construction. The anchor is fully compliant with ETA (European Technical Assessment) standards, ensuring consistent performance and safety on-site. Available from M6 to M30 diameters and corresponding lengths, our full size range accommodates various embedment depths and fixture thicknesses.
Key Features & Benefits
- ETA Approved: Rigorously tested and certified for use in structural applications under ETAG 001, giving engineers and contractors confidence in performance.
- Yellow Zinc Plated: 5-8 μm coating provides superior corrosion protection compared to standard electro-galvanized, ideal for bridge environments exposed to moisture or de-icing salts.
- Full Size Range: M6, M8, M10, M12, M16, M20, M24, M30 available – cover any design requirement from light fixtures to heavy steel connections.
- High Load Capacity: Designed for use in concrete grade C20/25 and above, with typical tension capacities up to 50 kN for M16 size (full data available on request).
- Easy Installation: Pre-assembled expansion clip; simply drill, insert, and torque to achieve immediate load transfer – no special tools needed.
- Temperature Resistance: Suitable for service temperatures from -40°C to +80°C, covering most climatic conditions.
- Versatile Use: Ideal for bridge construction, steel structures, handrails, cable trays, machinery anchoring, and seismic retrofit systems.
Technical Specifications (Sample Sizes)
| Size | Drill Diameter (mm) | Embedment Depth (mm) | Tension Capacity (kN) - C20/25 | Shear Capacity (kN) - C20/25 |
|---|---|---|---|---|
| M10 | 12 | 50 | 10.5 | 18.3 |
| M12 | 14 | 60 | 17.2 | 25.4 |
| M16 | 18 | 70 | 31.5 | 48.2 |
| M20 | 22 | 80 | 51.0 | 71.6 |
Note: Full technical data sheets with ETA test results are available upon request. Capacities vary with concrete grade and edge distances.
Why Choose Our Mechanical Anchor?
- European Technical Assessment (ETA): This anchor has undergone the stringent ETA process, evaluated for resistance to static and quasi-static loads, seismic performance, and durability. It is certified for use in both cracked and uncracked concrete, making it suitable for bridge structures subject to dynamic loading.
- Corrosion Protection: Yellow zinc plating passes 72+ hours of salt spray testing (ASTM B117), ideal for coastal bridges or areas with high humidity. For more aggressive environments, optional hot-dip galvanizing or stainless steel (A2/A4) is available as special orders.
- Full Size Availability: From small diameters for light fixtures to large diameters for primary structural connections, our production line covers all standard sizes. We also offer custom lengths (up to 300 mm) for specific embedment requirements.
- Consistent Quality: All anchors are manufactured under strict quality control, with 100% dimensional inspection and batch testing for mechanical properties. Each lot is traceable, and we provide mill certificates upon request.
- Easy Logistics: As a trading company with strong supply chain management in Hefei, we ensure timely delivery worldwide. Most popular sizes (M10, M12, M16) are stock items for rapid shipment.
Frequently Asked Questions (FAQ)
Q1: What does ETA approval mean for this anchor?
A: ETA (European Technical Assessment) is a rigorous product evaluation confirming that the anchor meets European standards for structural use, including load capacities, safety factors, and durability. It replaces the old ETAG 001 and is recognized across EU countries.
Q2: Can this anchor be used in cracked concrete?
A: Yes. Our mechanical anchor has been tested and approved for both cracked and uncracked concrete conditions, as required by ETA. This makes it suitable for bridge decks where cracking is inevitable.
Q3: What is the difference between yellow zinc and standard zinc plating?
A: Yellow zinc plating adds a chromate conversion coating over the zinc layer, providing higher corrosion resistance (72+ hours salt spray) compared to clear/blue zinc (24-48 hours). It also has a distinctive yellow iridescent appearance.
Q4: Which sizes are most commonly used for bridge construction?
A: For bridge applications, M12, M16, and M20 diameters are typical for connecting steel diaphragms, bearings, and safety barriers. Larger M24 and M30 are used for heavy truss connections and bridge railings.
Q5: Do you offer custom lengths or coatings?
A: Yes, we can produce custom lengths (up to 300 mm) and alternative coatings such as hot-dip galvanizing (HDG) or stainless steel (AISI 304/316) upon request. Minimum order quantities may apply.
Q6: How should I install this anchor correctly?
A: Drill a hole to the required diameter and depth (see data sheet). Clean the hole with compressed air or brush. Insert the anchor (pre-assembled with nut), tighten the nut to the recommended torque to expand the clip, and then release. Verify the anchor is seated. Always follow official installation manual.
Q7: What is your minimum order quantity (MOQ)?
A: For stock sizes (M10-M16), MOQ is 500 pcs per size. For non-stock or custom sizes, MOQ is 1000 pcs. Sample orders (10-20 pcs) are available for evaluation with freight collect.
Q8: How do you ensure product quality and traceability?
A: We conduct incoming material inspection, in-process dimensional checks, and final load testing on random samples. Each batch is assigned a unique lot number, and we retain test reports for at least 5 years. Mill certificates are provided with shipment if required.
Trust Hefei SENOTECH New Materials Co., Ltd – With an annual export value of US$1-1.5 Million and a growing presence across 15+ markets (North America, Europe, Southeast Asia, Africa, Oceania, and more), we are committed to delivering high-quality anchoring solutions for your bridge projects. Our experienced team ensures prompt technical support, competitive pricing, and reliable logistics. Contact us today for a quotation or technical datasheet – let our anchors secure your infrastructure.
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