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Product Description
As a leading manufacturer and direct supplier of heavy-duty infrastructure hardware, we present the T-Clamp SJ-321 Quick Fastener. Engineered for rapid assembly without the need for destructive drilling or thermal welding, this robust component guarantees uncompromising structural integrity for modular bridge systems. Sourcing directly from our advanced production facility ensures premium metallurgical quality and significant cost-efficiency for large-scale engineering and construction projects.
Engineered from high-strength cast steel and precision-machined plates
Weld-free and drill-free rapid fastening mechanism for immediate deployment
Seamlessly compatible with standard SJ-321 and SJ-200 modular systems
Hot-dip galvanized surface treatment for extreme corrosive environments
The T-Clamp represents a paradigm shift in temporary and modular bridge construction, completely eliminating the need for labor-intensive welding or structural drilling. When handling this fastener, the sheer weight and cold, unyielding texture of the high-strength cast steel immediately convey its industrial-grade reliability. The precision-machined T-shaped cross-section slides smoothly into transom top flanges or chord slots, locking into place with a satisfying, secure 90-degree rotation. This tactile feedback assures site engineers that the connection is solid and unshakeable. By integrating this fastening solution into your infrastructure projects, you drastically reduce onsite labor hours and heavy equipment costs. The heavy-duty hot-dip galvanized finish not only gives the clamp a matte, metallic sheen but also provides an impenetrable shield against harsh environmental elements, from coastal salt spray to relentless industrial moisture. Every curve and thread is meticulously engineered to endure the punishing kinetic vibrations of heavy vehicular traffic, translating to lower maintenance overhead and uninterrupted operational flow for your structural assets.
Product Name | T-Clamp SJ-321 Quick Fastener |
Compatible System | Bailey Bridge (SJ-321, SJ-200) |
Material | Cast steel / High-strength machined steel plate / Stainless steel (for corrosive environments) |
Bolt Specifications | M16 or M20 |
Bolt Grade | Grade 8.8 or 10.9 |
Surface Treatment | Hot-dip galvanizing |
Locking Mechanism | 90° rotation T-head with spring washers or double nuts |
Installation Torque | ≈400 N·m (for M20) |
Contact Surface | Anti-slip textures or rubber pads (optional) |
Installation Method | Weld-free, drill-free, quick fastening |
Certifications | ISO9001, Material Certificates, Test Reports |
Manufacturer Location | Zhenjiang, Jiangsu, China |
Deploying the right connection hardware is the dividing line between a project completed ahead of schedule and one plagued by costly delays. Our fastener is meticulously designed to accelerate your construction timelines while elevating the overall safety profile of your structural installations. By replacing permanent, rigid welds with a flexible, high-torque clamping mechanism, project managers gain unprecedented adaptability on the field.
Instantaneous Locking: The specialized T-head design requires only a simple 90-degree turn to achieve a vice-like grip, instantly securing deck panels and structural accessories.
Non-Destructive Application: Preserve the structural integrity and protective coatings of your primary beams, as zero pre-drilled holes or thermal welding are required for installation.
Vibration Dampening: Equipped with advanced spring washers and optional rubber pads to absorb kinetic energy from heavy transit, preventing micro-fractures in the connection points.
Unrestricted Positioning: Clamp anywhere along the chord slot, allowing for on-the-fly adjustments to accommodate unexpected field conditions and varying installation spacing.
Reusable Asset: Designed for frequent erection and dismantling, making it an invaluable, cost-saving asset for temporary access roads and emergency deployment fleets.
The foundation of any enduring infrastructure lies in its metallurgical composition. We forge these clamps from premium cast steel and high-strength machined steel plates, ensuring they possess the tensile strength required to bear immense structural loads. Recognizing that these components are frequently deployed in unforgiving outdoor environments, we have engineered an uncompromising defense against oxidation and decay.
Heavy-Duty Core: The cast steel construction provides exceptional resistance to deformation under extreme stress, maintaining its structural geometry even under maximum load capacities.
Hot-Dip Galvanized Armor: A thick, uniform layer of zinc coating metallurgically bonds to the steel, offering cathodic protection that prevents rust from compromising the fastener's integrity.
Stainless Steel Alternatives: For highly corrosive marine or chemical environments, stainless steel variants are available to ensure decades of reliable service without structural degradation.
Weather-Resilient Longevity: Built to withstand torrential rain, freezing temperatures, and intense UV exposure, eliminating the need for frequent replacements and reducing lifecycle costs.
When heavy machinery and commercial fleets traverse temporary structures, the connecting nodes endure severe dynamic forces. This fastener is calibrated to counteract both upward pull and horizontal shear with uncompromising rigidity, securing your assets against catastrophic failure and ensuring safe passage for all payloads.
High-Tensile Bolting: Utilizing M16 or M20 bolts rated at Grade 8.8 or 10.9, the clamp delivers immense clamping force that locks individual components into a solid, monolithic structure.
Precision Torque Tolerance: Engineered to accept an installation torque of approximately 400 N·m (for the M20 variant), ensuring a scientifically verifiable, slip-free connection.
Friction-Enhanced Surfaces: The contact areas feature engineered anti-slip textures or optional high-density rubber pads, which drastically increase the coefficient of friction against the steel beams.
Shear Force Resistance: The robust T-shaped cross-section acts as a deep anchor, effectively neutralizing the lateral forces generated by braking vehicles and heavy transit.
Installation Method Recommendation
Time on site translates directly to operational expenditure. The core philosophy behind this fastening system is the absolute minimization of assembly and disassembly hours. By eliminating hot works and precision drilling, your field teams can drastically accelerate project delivery and optimize workforce allocation.
Tool-Free Alignment: The intuitive design allows workers to position and engage the clamp using single-hand operation, a critical advantage in precarious or elevated work zones.
Rapid 90-Degree Lock: A simple quarter-turn of the T-head securely engages the underside of the transom top flange, transforming hours of welding into mere seconds of fastening.
Adaptive Tolerance: The sliding mechanism accommodates varying installation spacing, empowering on-site engineers to make immediate adjustments without waiting for custom-fabricated parts.
Accelerated Dismantling: For temporary structures requiring frequent relocation, the quick-release nature of the bolts ensures rapid teardown, maximizing the utilization rate of your modular assets.
Continuous kinetic energy and low-frequency vibrations are the natural enemies of structural joints. To combat the relentless loosening effect caused by heavy traffic, this clamp incorporates a multi-layered anti-loosening architecture that guarantees long-term stability and peace of mind for site operators.
Spring Washer Integration: High-tension spring washers maintain continuous pressure on the bolt threads, absorbing micro-vibrations and preventing the nut from backing off under load.
Double Nut Configuration: For extreme vibration scenarios, an optional double nut locking system creates a mechanical jam that renders self-loosening virtually impossible.
Coating Preservation: The precise clamping mechanism secures the joint without grinding against the primary structure, preserving the anti-corrosion paint or galvanization of the main beams.
Reduced Inspection Overhead: The reliable locking force significantly lowers the frequency of mandatory torque checks, freeing up your maintenance crews for other critical tasks.
Versatility is the hallmark of superior engineering. This clamp is not merely a single-purpose component; it is a universal fastening solution designed to seamlessly integrate with standard modular systems like the SJ-321 and SJ-200. Its non-destructive nature makes it the ideal choice for a vast array of structural attachments across diverse engineering sectors.
Deck Panel Securing: Rapidly and securely fastens steel grating or chequer plates to transoms, creating a stable, rattle-free driving surface for heavy vehicles.
Safety Infrastructure: Provides a rigid base for temporary handrail posts and safety barriers without drilling into the primary deck, maintaining the structural integrity of the bridge.
Utility Management: Easily attaches cable trays, utility supports, and lighting fixtures to the bridge framework, streamlining site organization and safety compliance.
Emergency and Military Deployment: Serves as a standardized, interchangeable fastener for rapid-response bridges, where speed and reliability are matters of life and death.
Monitoring Equipment: Offers a secure, temporary mounting point for experimental sensors, wind bracing, and structural health monitoring devices without permanently altering the bridge.
Procuring critical infrastructure components requires absolute confidence in the manufacturing source. As a direct manufacturer located in Zhenjiang, Jiangsu, we maintain rigorous oversight over every phase of production. Our commitment to excellence extends far beyond the factory floor, providing you with comprehensive engineering support throughout your project's lifecycle.
Certified Manufacturing: Our production facilities operate under strict ISO9001 quality management systems, ensuring every clamp meets exacting national and international standards.
Traceable Material Integrity: We provide comprehensive material certificates, rigorous laboratory test reports, and quality assurance documentation for every batch delivered to your site.
Custom Engineering Solutions: Our in-house engineering team offers free structural calculations, detailed CAD drawings, and bespoke customization to match your specific project parameters.
Lifecycle Technical Guidance: From comprehensive installation manuals and video tutorials to available on-site supervision, our technical support ensures flawless execution and structural safety.
Selecting the right manufacturing partner is crucial for the success and safety of your large-scale infrastructure developments. We do not just supply hardware; we deliver engineered reliability that protects your investments and enhances your operational capabilities. Our deep-rooted expertise in modular structural components positions us as a trusted pillar in the global engineering supply chain.
Direct Manufacturing Power: By controlling the entire production process, we offer unparalleled cost efficiencies while maintaining absolute control over metallurgical quality and precision machining.
Proven Track Record: Our components are actively supporting heavy-duty transit and emergency access in demanding environments worldwide, demonstrating real-world resilience and performance.
Rapid Scalability: With expansive production lines dedicated to structural parts, we possess the capacity to fulfill high-volume orders within aggressive project deadlines.
Unwavering Accountability: We stand behind our products with robust 24-hour after-sales service, ensuring that expert engineering assistance is always available when you need it most.
To assist project managers and procurement teams in making informed decisions, we have compiled detailed answers to the most common inquiries regarding our fastening solutions and structural systems.
We are a direct manufacturing facility based in Zhenjiang, Jiangsu. We operate our own extensive production base and specialized manufacturing lines dedicated entirely to modular bridges and high-strength structural components, ensuring direct quality control and competitive sourcing for your projects.
Quality and safety are our top priorities. Our manufacturing processes are fully ISO9001 certified, and all products strictly adhere to national engineering standards. Upon delivery, we provide comprehensive material certificates, detailed laboratory test reports, and official quality certificates to satisfy your project's compliance and safety requirements.
Absolutely. We understand that field conditions frequently demand tailored solutions. Our experienced engineering department provides free structural calculations, precise CAD drawings, and full customization services to ensure our components perfectly integrate with your unique structural requirements and load demands.
Yes, we provide an extensive suite of installation resources. This includes detailed technical drawings, comprehensive step-by-step manuals, and instructional videos. Furthermore, we offer 24-hour after-sales service and can deploy expert engineers for on-site supervision to guarantee flawless execution and structural integrity.
First and foremost, an experienced construction team must be assigned to undertake the erection. Assuming a spacious and flat installation site, we recommend the following professional procedure:
Step 1: Assemble the bilateral panels into two whole structures, including the lower chord reinforced, horizontal bracing, vertical bracing, and end posts. Meanwhile, install the bridge bearings on the abutment, carefully checking the distance between bolts to ensure a perfect fit.
Step 2: Utilize a suitable lorry-mounted crane to lift the two assembled truss units (weighing approximately 11 tons and measuring 27.4m in length) and place them precisely on the side abutments.
Step 3: Install the transoms. Using a small crane, prioritize the nearest and farthest transoms to maximize structural stability during erection, followed by the intermediate transoms.
Step 4: Install the sway bracing, then pave the first row of bridge decking on the transoms. Concurrently, install the upper chord reinforced to strengthen the structure, allowing the crane to advance onto the decking for subsequent transom installation.
Step 5: Continue this sequential installation method for the remainder of the span.
Step 6: Finally, complete the structure by installing the upper chord reinforced, curbs, gap plates, handrails, connective plates, and handrail columns, securing non-structural elements rapidly with our quick fasteners.
