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Help CenterCarbon Steel Expansion Bolt With Yellow Zinc Plated for Bridge Construction High Loading Capacity Standard Thread Full Sizes Available
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Hefei SENOTECH New Materials Co., Ltd proudly presents our Carbon Steel Expansion Bolt with Yellow Zinc Plated, specifically engineered for demanding bridge construction projects. As a trusted supplier since 2020, we combine rigorous quality control with competitive pricing, serving markets across North America, South America, Europe, Asia, and beyond. Our expansion bolts deliver exceptional holding power, corrosion resistance, and full-size availability, ensuring reliable performance in critical infrastructure applications.
Key Features & Technical Specifications
- High Loading Capacity: Designed to withstand heavy structural loads, ideal for bridge decks, railings, and support columns.
- Yellow Zinc Plated Finish: Provides excellent corrosion resistance in outdoor and humid environments, extending service life.
- Standard Thread Design: Compatible with standard nuts and washers, simplifying installation and maintenance.
- Full Sizes Available: From M6 to M30 and lengths from 50mm to 300mm, covering diverse project requirements.
- Carbon Steel Construction: Offers high tensile strength and durability at a cost-effective price point.
- Expansion Mechanism: Reliable wedge expansion ensures secure anchoring in concrete, brick, or stone substrates.
- Customizable Options: Thread length, head style, and packaging can be tailored per order.
| Size Range | M6 – M30 (Sizes: 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 24mm, 30mm) |
| Length Range | 50mm – 300mm (custom lengths available) |
| Thread Standard | Metric Coarse / Fine (ISO 68-1) |
| Head Style | Hexagon head, countersunk head, or as specified |
| Coating | Yellow zinc plating (trivalent or hexavalent optional) |
| Tensile Strength | ≥ 400 MPa (depending on size and material grade) |
| Packaging | Cartons, pallets, or bulk bags; export standard |
Advantages for Bridge Construction
Our expansion bolts are specifically designed for the high-stress environment of bridge projects. The yellow zinc coating withstands moisture, salt spray, and UV exposure, reducing maintenance costs. The high loading capacity ensures stability under dynamic loads from traffic and wind. Standard threads allow quick installation with common tools, saving labor time. Full sizes availability means you can source all required bolts from one supplier, simplifying procurement and logistics.
Why Choose Hefei SENOTECH New Materials Co., Ltd?
With US$1 million – US$1.5 million annual export value and a global footprint spanning North America, South America, Europe, Asia, Africa, and Oceania, we have established a reliable supply chain for construction fasteners. Our team ensures strict quality control at every stage, from raw material sourcing to final packaging. We offer competitive pricing, flexible MOQ, and prompt delivery. Whether you need standard sizes or custom solutions, we are ready to support your bridge construction projects with professional service and technical expertise.
Frequently Asked Questions (FAQ)
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Q: What is the maximum load capacity of these expansion bolts?
A: The load capacity varies by size and substrate. For example, an M12 bolt in concrete can typically support over 10 kN. Please refer to our technical data sheet for specific values, or contact us for project-specific calculations. -
Q: Are these bolts suitable for use in saltwater environments?
A: The yellow zinc plating provides good corrosion resistance, but for extreme marine environments, we recommend optional hot-dip galvanized or stainless steel variants, which are available upon request. -
Q: Do you offer custom thread lengths or head styles?
A: Yes, we can customize thread length, head shape (hex, countersunk, round), and even the expansion sleeve design to meet your project requirements. Please provide drawings or specifications. -
Q: What is the minimum order quantity (MOQ)?
A: Our MOQ is typically 500 pieces for standard sizes, but we can accommodate smaller trial orders for new customers. Contact us for details. -
Q: How long does delivery take?
A: For standard sizes, delivery is usually 15–25 working days after order confirmation. Custom orders may take 25–35 working days, depending on complexity. -
Q: Can you provide test certificates or material reports?
A: Yes, we can provide mill test certificates, tensile test reports, and coating thickness inspection reports upon request. These are available for each batch. -
Q: What packaging is used for export?
A: Our standard packaging includes strong cartons with palletization, or bulk bags for large quantities. We also use waterproof wrapping to prevent moisture damage during sea freight. -
Q: Are these bolts compliant with international standards?
A: Our products are manufactured to meet common industry standards such as ASTM F1554, DIN 529, and GB/T 5780. Specific certifications can be discussed per order.
Ready to secure your bridge construction with reliable, high-performance expansion bolts? Contact Hefei SENOTECH New Materials Co., Ltd today for a quote, sample, or technical consultation. Our team is dedicated to providing fast, professional service for your global projects.
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