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Help CenterCarbon Steel Concrete Expansion Bolt Yellow Zinc Plated Professional Grade Full Sizes Wholesale Price
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Hefei SENOTECH New Materials Co., Ltd is proud to offer our Carbon Steel Concrete Expansion Bolt Yellow Zinc Plated Professional Grade Full Sizes – a reliable fastening solution engineered for demanding construction and industrial applications. Manufactured with high-quality carbon steel and a protective yellow zinc plating, these expansion bolts deliver excellent corrosion resistance and consistent holding power in concrete, brick, and masonry substrates. Available in a comprehensive range of diameters and lengths, our professional-grade bolts are designed to meet the needs of contractors, fabricators, and distributors seeking cost-effective, high-performance anchoring at wholesale prices.
As a trading company with a global reach, we supply these expansion bolts to markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. With an annual export value exceeding US$1 million, we ensure strict quality control, competitive pricing, and timely delivery. Whether you need standard sizes or custom specifications, our inventory covers full sizes to accommodate projects of any scale.
Key Features & Technical Specifications
- Material: High-strength carbon steel (Grade 4.8 or higher) for robust tensile and shear load capacity.
- Surface Treatment: Yellow zinc plating provides sacrificial corrosion protection – ideal for indoor and sheltered outdoor environments.
- Professional Grade: Meets industry-standard performance requirements for heavy-duty anchoring in concrete (C20/25 or higher).
- Full Size Range: Available from M6 to M20 (metric) and 1/4” to 3/4” (imperial), with lengths from 25mm to 200mm.
- Expansion Mechanism: Split‑sleeve or wedge‑type design ensures secure expansion as the nut is tightened.
- Wholesale Pricing: Factory‑direct pricing with volume discounts for bulk orders (MOQ negotiable).
Typical Dimensions & Load Ratings (Reference)
| Size | Drill Diameter (mm) | Embedment Depth (mm) | Tensile Load (kN) | Shear Load (kN) |
|---|---|---|---|---|
| M8 × 50 | 8 | 30 | 4.5 | 6.0 |
| M10 × 80 | 10 | 40 | 7.0 | 9.5 |
| M12 × 100 | 12 | 50 | 10.5 | 14.0 |
* Actual load capacity depends on concrete strength, edge distance, and installation torque. Values above are for reference only.
Customer Benefits
- Cost‑Effective: Direct wholesale pricing without intermediary markups – ideal for large‑scale projects and inventory.
- Time‑Saving: Consistent quality across all sizes reduces installation failures and rework.
- Versatile: Suitable for attaching structural steel, handrails, machinery, shelves, and more to concrete foundations.
- Easy Installation: Standard drill‑and‑set procedure with common tools (hammer drill, torque wrench).
- Reliable Supply: Full‑size inventory ensures you get the right bolt when you need it.
Trust & Assurance
Hefei SENOTECH New Materials Co., Ltd has been serving global customers since 2020, with an annual export value of US$1 Million - US$1.5 Million. Our main markets cover 10+ regions including North America, South America, Europe, Africa, Asia, and Oceania. Every batch of expansion bolts undergoes strict dimensional and plating inspection before shipment. We also offer custom packaging, branding, and size specifications upon request. Choose SENOTECH for reliable anchoring solutions that combine professional quality with unbeatable wholesale prices. Contact us today for a quote or sample request.
Frequently Asked Questions
Q1: What materials are these expansion bolts made of?
A: They are made of high-strength carbon steel, typically Grade 4.8 or higher, ensuring adequate tensile strength for concrete anchoring.
Q2: Can these bolts be used outdoors?
A: Yes, the yellow zinc plating provides moderate corrosion resistance, making them suitable for dry or sheltered outdoor environments. For highly corrosive conditions, we recommend hot-dip galvanized or stainless steel options (available upon request).
Q3: What is the minimum order quantity (MOQ)?
A: Our MOQ is flexible depending on the size and packaging. Typically, we start from 1,000 pieces per size. Please contact us for exact MOQ for your preferred sizes.
Q4: Do you offer custom sizes or branding?
A: Yes, we can produce custom lengths, thread configurations, and even print your brand logo on the packaging. Custom orders require a minimum quantity and lead time.
Q5: How do I install these expansion bolts correctly?
A: Drill a hole to the specified diameter and depth, clean out dust, insert the bolt, then tighten the nut to the recommended torque. The expansion sleeve will wedge against the concrete to create a secure hold.
Q6: What is the lead time for wholesale orders?
A: For standard full sizes with bulk packaging, lead time is typically 7–15 days after order confirmation. Custom sizes may take 20–30 days.
Q7: Do you provide technical data sheets or load test reports?
A: Yes, we can provide product specification sheets and load performance data upon request. Third-party testing reports are available for an extra fee.
Q8: Can I get a free sample before placing a bulk order?
A: We offer paid samples, and the cost can be deducted from your first bulk order. Please contact our sales team to arrange samples.
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