304 Stainless Steel Expansion Eye Bolt Heavy Duty Lifting Expansion Anchor Bolt with Ring for Concrete Swing Hammock & Marine Applications
Manufacturing Process
• Multi Station Cold Heading Technology
• Intelligent Heat Treatment System
• Micron-Level Thread Rolling Process
• Fully Automatic Optical Sorting
• Environmentally Friendly Surface Treatment Line
• Metallographic And Mechanical Joint Laboratory
Quality Control System
• Raw Material Source Locking
• Furnace Number Batch Full Traceability
• Third Party Material Certification
• Process Parameters Open And Transparent
• Salt Spray Test Real Time Monitoring
• International Standard Compliance Declaration
Flexible Customization Capability
• Customizable head/slot Shapes
• Extreme Application Of Special Materials
• Breakthroughs In Extra Large/Long Specifications
• Integrated Assembly Of Components
• Customizable Surface Treatment Colors
• Personalized Packaging And Labeling
Technical Service
• On-Site Failure Analysis
• Selection Calculation And BOM Optimization
• Installation Tool Selection Guidance
• Inventory Management (VMI) Trusteeship
• Free Sample Making And Testing
• International Standard Translation And Interpretation
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Dual Material Options, Corrosion Resistant & Durable for Multiple Conditions
Our expansion eye bolts are available in AISI 304 stainless steel A2-70 grade and Q235 carbon steel 4.8/8.8 grade. The stainless steel version is polished and passivated with natural rust-proof performance, perfectly suitable for humid outdoor and marine salt spray environments. Carbon steel can be electro-galvanized or hot-dip galvanized for stronger anti-rust protection. Sizes range from M6 to M20 with customizable inner ring diameter, fitting construction, lifting and leisure facilities with stable load capacity and long service life.
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Integrated Eye Ring & Expansion Anchor Design, Stable Load Bearing & High Safety
Adopting one-piece eye ring structure without welding breakpoints for superior tensile strength. Based on expansion anchoring principle, the sleeve expands tightly against concrete wall when tightening the nut to prevent slipping. Compliant with GB/T 22795 and ETAG 001 standards, it is ideal for concrete lifting points, hammock anchors, construction hoisting and marine mooring. It bears uniform force, resists vibration and loosening, ensuring high safety factor for heavy-duty fastening.
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Easy Installation Without Embedding, High Efficiency & Wide Versatility
Simple installation requires only drilling, hole cleaning, inserting the anchor and tightening the nut, with no pre-embedding needed to save construction time and labor costs. Widely applicable to construction anchoring, heavy lifting points, outdoor leisure, marine equipment and general mechanical assembly. Complete specifications and tool-free mounting support fast on-site installation. As a direct factory supply with custom service available, it meets various engineering and daily fastening demands perfectly.
Application Scenarios
Industrial Capabilities
• Factory Area: 8,000 square meters
• Certifications: ISO, IATF, CE, RoHS, JIS, ASTM
• Manufacturing : 70+ internationally advanced production lines
• Testing: 30+ sets of precision quality testing equipment
• Annual Output: Up to 50,000,000 tons
From Raw Materials to Finished Products
Our factory's fully automated production lines for cold heading, precision thread rolling, controlled-atmosphere heat treatment, and environmentally friendly surface finishing enable closed-loop manufacture from raw material to finished product. Thanks to inline optical sorting and a digital MES, every fastener meets stringent standards for strength, accuracy, and surface quality. You guarantee the best fasteners—reliable, efficient, and eco-friendly.
Lab for Innovation:
Are you working on a project? Let's move forward now. We are constantly searching for fresh concepts, and talent and collaboration are what drive our development. Do you have a project underway? Let's move forward now.
"Pain Point Diagnosis" to "Customized Implementation" in the Whole Joint R&D Process
We provide more than just standard parts. From the beginning of your project, our multicultural engineering team actively collaborates. We carefully consider the application context and customize solutions in the lab, flawlessly integrating technology and application to guarantee that innovative ideas are quickly transformed into practical solutions that reduce overall lifespan costs.
Integrated Verification System: Using "Test Data" to Ensure Innovation
The creative process doesn't finish at the drawing board. We offer one-stop verification for everything from corrosion testing to prototype development through our internal technical center. We employ empirical data to verify the performance stability of customized solutions through comprehensive simulated working condition tests. In addition to achieving genuinely dependable cost reduction and efficiency improvement, this considerably lowers project risks.
