Carbon Steel Mining Accessories Dome Bolts
These dome bolts are specialized mining accessories made of carbon steel, designed primarily for underground mining support. Carbon steel provides high strength and wear resistance, enabling the bolts to withstand the pressure and harsh conditions of mining environments. Their dome-shaped head design ensures stable contact with mine rock surfaces or support structures, enhancing overall support reliability. As essential mining accessories, they are widely used to reinforce roadways, tunnels, or working faces, helping maintain the safety and stability of mining sites.
Product Specifications
| Parameter Category |
Specification Details |
| Product Type |
Dome bolts (specialized carbon steel accessories for underground mining support) |
| Material |
Carbon steel (Q235/Q345/Q460) - offers high tensile strength and wear resistance for mining harsh conditions |
| Application |
Reinforcing mining roadways, tunnels, underground working faces; supporting mine rock walls/roofs |
| Standard Sizes |
- Diameter: 16mm-24mm (common mining bolt sizes)
- Length: 1000mm-2400mm (adjustable per support depth needs) |
| Dome Head Dimensions |
Diameter: 30mm-50mm; Thickness: 8mm-15mm - ensures large contact area with rock/support structures |
| Tensile Strength |
345MPa-460MPa (varies by carbon steel grade; meets mining load-bearing requirements) |
| Surface Treatment |
Hot-dip galvanizing / Zinc plating - anti-rust and corrosion resistance for humid underground environments |
| Thread Type |
Metric coarse thread (ISO standard) - easy to install with matching nuts/washers |
Applications
- Reinforcing underground mining roadways to prevent rock collapse using carbon steel dome bolts
- Supporting the roofs of mining tunnels with high-strength carbon steel dome bolts
- Securing rock walls in underground mining working faces to maintain stability
- Strengthening temporary mining passages during ore extraction operations
- Reinforcing the surrounding rock of mining shafts to ensure structural safety
Frequently Asked Questions
Q: Why are these dome bolts made of carbon steel, and what advantage does this material bring for mining use?
A: Carbon steel (e.g., Q235/Q345) provides high tensile strength and wear resistance. These properties let the bolts withstand underground mining's harsh conditions—like rock pressure and humidity—without easily deforming or breaking.
Q: What makes the "dome head" design suitable for mining support?
A: The dome-shaped head has a larger contact area with rock surfaces or support structures. This design distributes pressure more evenly, preventing the bolt from sinking into soft rock and improving overall support stability.
Q: Are these dome bolts only used for specific parts of a mining site?
A: No, they're versatile mining accessories. They're commonly used to reinforce underground roadways, tunnel roofs, working faces, and even mining shafts—any area that needs rock wall or roof support.
Q: What sizes do these carbon steel dome bolts come in, and how to choose the right one?
A: Standard diameters range from 16mm-24mm, and lengths from 1000mm-2400mm. Choose based on the support depth needed (e.g., longer bolts for deeper rock layers) and the expected pressure at the mining site.
Q: Do these bolts have any protection against underground humidity?
A: Yes, they use surface treatments like hot-dip galvanizing or zinc plating. These treatments provide anti-rust and corrosion resistance, extending the bolts' service life in humid underground environments.
About Our Supplier
Jiaxing Xinchuang Hardware Co., Ltd.
Your Trusted Global Partner for Premier OEM Fasteners and Custom Industrial Solutions
Established in 2025, Xinchuang has evolved into a leading global manufacturer dedicated to providing high-quality fasteners and industrial components at competitive prices. With over a decade of industry experience and a state-of-the-art production facility, we specialize in delivering both standard and non-standard solutions tailored to the rigorous demands of clients worldwide.
Our Expertise and Capabilities
We are a vertically integrated manufacturer covering production, plating/finishing, and global export. Our extensive product capabilities meet both imperial and metric standards across a wide range of sizes (M1 to M100) and grades (4.8, 6.8, 8.8, 10.9, 12.9).
Core Manufacturing Competencies
- Standard Fasteners: Screws, Nuts, Washers, Anchors, Pins, Keys, Threaded Rods, and Socket Screws
- Materials & Finishes: High-grade Stainless Steel, Carbon Steel, with durable Zinc, Plain, and Galvanized finishing options
Customization and R&D Strengths
What differentiates Xinchuang is our robust OEM/ODM capability. We operate primarily on a made-to-order basis, ensuring every batch is freshly manufactured to your exact specifications. Backed by a dedicated in-house R&D department and design team, we excel at engineering specially designed fasteners for unique project needs.
Reliable Production and Service
We understand that project success relies on component caliber and timely delivery. Through efficient production management, we ensure reliable delivery times for production orders (typically 30-40 days). We are committed to providing extensive cost savings and supply chain security for our customers through consistent quality and dependable lead times.