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SJ-300
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Product Description
As a leading manufacturer and direct supplier of robust infrastructure solutions, we present the SJ-300 Modular Bailey Panel. Engineered for rapid deployment and unyielding stability, this structural component streamlines bridging projects across demanding terrains.
Standardized 3m × 6m dimensions engineered for optimized logistics and dense packing.
Forged from premium Q355B high-strength alloy steel for maximum vertical load endurance.
Designed specifically to support heavy-duty transport and temporary access requirements.
Treated with advanced anti-corrosion surface technology to withstand harsh outdoor environments.
When infrastructure demands immediate, reliable solutions, the SJ-300 Modular Bailey Panel stands as the definitive answer for engineering contractors and project managers. The cold, unyielding touch of its Q355B high-strength alloy steel speaks to its exceptional craftsmanship, designed specifically to bear the immense weight of heavy construction machinery and continuous vehicular traffic without a hint of structural fatigue. Every weld and joint is meticulously forged, creating a seamless matrix that absorbs and distributes massive kinetic energy. Picture the rhythmic, heavy thud of transport trucks rolling across a temporary access bridge; beneath them, this modular panel remains steadfast, anchoring the entire operation with silent authority. Beyond its raw strength, the visual profile of the panel reflects a deep industrial resilience, coated in a specialized anti-rust finish that repels the biting moisture of heavy rain and the corrosive sting of salt spray. It is not merely a piece of steel; it is a foundational asset that transforms impassable geographical barriers into secure, high-capacity transit routes, ensuring that critical supply chains and construction timelines move forward without hesitation.
Understanding the precise technical parameters of your infrastructure components is crucial for accurate project calculation, budget forecasting, and strict safety compliance. The following table outlines the exact specifications of our modular panel, providing site engineers, architects, and procurement specialists with the critical data required for comprehensive structural assessments. These precise figures represent the baseline of our manufacturing consistency, ensuring that every steel unit delivered to your site aligns perfectly with your architectural blueprints, environmental constraints, and heavy load-bearing requirements. By adhering to these exact dimensions and material grades, we guarantee seamless integration into your broader construction ecosystem.
Technical Parameters
Product | Dimension-mm | Weight-kg | Material |
SJ-300 Bailey Panel | 3000*6000 | Q355B |
Deploying the right structural components dictates the pace and success of any bridging operation. This modular panel is engineered to deliver a strategic advantage on the ground, combining sheer physical endurance with intelligent, adaptable design. By integrating these panels into your inventory, you are investing in a system that accelerates project completion while drastically minimizing ongoing maintenance overhead.
Optimized Compact Architecture: The precise standard sizing eliminates logistical bottlenecks, allowing for denser packing during transit and streamlined inventory management at your storage facilities.
Superior Rigidity Matrix: Advanced welding techniques bind the high-strength alloy, creating a rigid framework that resists torsion and bending even under the most aggressive dynamic loads.
Weather-Defiant Coating: A specialized surface treatment acts as an impenetrable shield against oxidation, ensuring the steel retains its structural integrity in humid, tropical, or coastal environments.
Universal Component Synergy: Designed to interlock flawlessly with existing standard bridge components, eliminating the need for custom adapters and reducing on-site assembly friction.
Machinery-Independent Handling: Despite its immense load-bearing capabilities, the intelligent weight distribution allows for manual or light-equipment installation in remote areas where heavy cranes cannot operate.
Safety and load limits are the non-negotiable pillars of temporary infrastructure. The SJ-300 is forged from Q355B high-strength alloy steel, a material chosen specifically for its exceptional yield strength and resistance to mechanical stress. This ensures that when fully loaded transport vehicles cross your temporary structures, the underlying framework remains absolutely secure.
Q355B Alloy Steel Core: Provides a superior strength-to-weight ratio, allowing the panel to support massive vertical loads without permanent deformation or structural compromise.
Enhanced Weld Integrity: Every connection point undergoes rigorous quality checks to ensure continuous stress distribution across the entire panel geometry during heavy transit.
Dynamic Load Mastery: Specifically engineered to absorb the intense vibrations and shifting weight of heavy agricultural machinery, construction fleets, and emergency response vehicles.
Long-Term Structural Stability: Maintains its high-rigidity profile over thousands of crossing cycles, providing absolute peace of mind for site supervisors and safety inspectors.
Efficiency in procurement and deployment relies heavily on standardized dimensions and universal fit. The 3m × 6m footprint of this panel is a calculated engineering decision, designed to maximize transport volume while ensuring rapid, puzzle-like assembly on the field. This compatibility significantly lowers the barrier to expanding or modifying existing bridge structures.
Standardized 3m × 6m Footprint: Perfectly sized for standard flatbed transport, significantly reducing freight costs and simplifying site delivery logistics across long distances.
Seamless Integration: Interlocks smoothly with standard chords, frames, and deck panels, allowing your engineering teams to utilize existing inventory without compatibility issues.
Flexible Reconfiguration: Can be easily detached and reassembled in different configurations, transitioning from a single-lane access bridge to a multi-point support trestle as project demands shift.
Streamlined Inventory Control: Unified modular sizing means fewer unique components to track, simplifying warehouse management and procurement forecasting for future builds.
Outdoor infrastructure is locked in a constant battle against the elements. We have engineered this panel to withstand the harshest environmental degradations, from the relentless humidity of tropical zones to the biting salt spray of coastal projects. The advanced surface treatments applied during manufacturing drastically extend the operational lifespan of the steel.
Deep-Penetration Anti-Rust Treatment: A robust chemical barrier that prevents oxidation at the molecular level, keeping the structural steel pristine even in perpetually damp conditions.
Salt Spray Endurance: Highly resistant to chloride-induced corrosion, making it the premier choice for bridging over tidal rivers, estuaries, or near demanding marine environments.
Reduced Maintenance Cycles: The resilient finish minimizes the need for frequent repainting or structural patching, keeping your labor force focused on construction rather than upkeep.
Extended Asset Lifespan: By defeating environmental wear and tear, these panels serve as a long-term asset that can be deployed across multiple sequential projects over decades.
Installation Method Recommendation
Time is the most expensive commodity on any construction site. The SJ-300 is designed to drastically compress the installation timeline. Through intelligent weight distribution and intuitive connection points, your construction teams can erect safe, high-capacity bridges in a fraction of the time required for traditional concrete or welded-in-place steel structures.
Rapid Assembly Mechanics: Pin-and-bolt connections eliminate the need for time-consuming on-site welding, allowing for immediate load testing upon assembly completion.
Minimal Heavy Machinery Required: While the combined truss unit weighs approximately 11 tons, individual components like the transom (under 1 ton) can be maneuvered with small, agile cranes.
Clear Erection Protocols: Installation follows a logical sequence—from bilateral panel assembly and abutment bearing placement to transom and sway bracing installation.
Adaptable to Remote Terrains: The lightweight yet sturdy nature of the individual panels makes them ideal for disaster relief zones or deep rural areas where massive lifting equipment cannot be transported.
Versatility defines the true value of modular infrastructure. This panel is not limited to a single use case; it is a multi-functional structural asset that adapts to the specific geographical and operational challenges of your projects. From urgent emergency responses to planned rural developments, it provides a reliable foundation across diverse sectors.
Small-Span Temporary Bridges: Instantly bridge ditches, irrigation canals, and small rivers to facilitate the safe, uninterrupted passage of light vehicles and pedestrians.
Heavy-Duty Site Access: Create robust temporary access roads that can bear the immense weight of loaded dump trucks, excavators, and inbound building materials.
Rural Infrastructure Upgrades: Deliver low-cost, high-durability crossing solutions for farmland and remote villages, dramatically improving regional agricultural logistics and daily travel.
Emergency Disaster Relief: Rapidly deployable in the aftermath of floods or seismic events to quickly restore critical supply lines for rescue teams and relief convoys.
Engineering Support Platforms: Assemble the panels vertically or horizontally to construct rigid trestles, construction supports, and temporary staging areas for complex architectural builds.
Partnering with a direct manufacturer eliminates intermediary markups and guarantees a direct line of accountability for product quality. Based in Zhenjiang, Jiangsu, our expansive production facility is dedicated exclusively to the precision engineering of modular bridging systems. We operate under stringent international quality frameworks to ensure every panel meets exacting safety standards.
Direct Manufacturer Advantage: Sourcing directly from our specialized production lines ensures highly competitive pricing and priority scheduling for large-scale infrastructure orders.
ISO9001 Certified Operations: Every stage of the manufacturing process, from raw material selection to final weld inspection, is governed by rigorous quality management systems.
Comprehensive Documentation: We provide full transparency with every shipment, including detailed material certificates, verified laboratory test reports, and official quality certificates.
National Standard Compliance: Engineered to meet and exceed strict national infrastructural standards, mitigating compliance risks for your engineering firm and site operators.
Procuring heavy infrastructure requires more than just the physical product; it demands expert engineering support from conception to final erection. We provide a comprehensive suite of technical services designed to eliminate guesswork, ensuring that your bridging project is structurally sound, economically viable, and safely executed.
Free Structural Calculations: Our in-house engineering team provides precise load calculations and structural assessments tailored specifically to your unique site conditions.
Customized Blueprint Design: We supply detailed, bespoke CAD drawings that map out the exact configuration required for your specific span and weight requirements.
Comprehensive Installation Guides: Equip your ground teams with extensive resources, including step-by-step manuals, detailed schematics, and instructional video tutorials.
On-Site Supervision: For complex deployments, experienced technical supervisors are available to oversee the erection process, ensuring perfect alignment and strict safety compliance.
24-Hour Global Response: Our dedicated after-sales support team remains on standby around the clock to resolve any technical queries or urgent component requests immediately.
Selecting the right supply partner is as critical as the engineering of the bridge itself. We bring decades of specialized manufacturing expertise directly to your procurement desk. By choosing our modular solutions, you are securing a supply chain that prioritizes structural integrity, logistical efficiency, and unwavering technical support.
Uncompromised Material Sourcing: We utilize only verifiable, top-tier high-strength alloy steels, refusing to cut corners on the foundational elements of our products.
End-to-End Project Partnership: We do not simply ship steel; we collaborate with your project managers from the initial structural calculation to the final bolt tightening.
Proven Global Track Record: Our panels have successfully supported critical infrastructure projects, disaster relief efforts, and heavy construction sites across diverse global environments.
Scalable Production Capacity: Whether you require a single 6-meter span or kilometers of temporary access roads, our manufacturing base can scale rapidly to meet your tightest deadlines.
To assist procurement officers and site engineers in their decision-making process, we have compiled detailed answers to the most critical technical and operational inquiries regarding our modular bridging systems.
Are you a direct manufacturing facility or a trading entity?
We are a highly specialized, direct manufacturer located in Zhenjiang, Jiangsu. We operate our own extensive production base and dedicated assembly lines focused exclusively on modular steel bridges and their corresponding structural components.
What specific components are included in your manufacturing portfolio?
Our core production includes the SJ-200 Steel Bridge, SJ-321 Bailey Bridge, standard bailey panels, reinforced chords, structural frames, heavy-duty deck panels, high-shear pins, structural bolts, and a complete suite of steel bridge accessories.
Do you offer customized engineering designs for unique topographies?
Absolutely. We understand that no two project sites are identical. We provide complimentary structural load calculations, customized architectural drawings, and tailored component configurations to perfectly match your specific span and weight requirements.
What quality assurance documentation accompanies your shipments?
Our manufacturing processes are fully ISO9001 certified, and all products strictly adhere to national engineering standards. Upon delivery, we provide comprehensive material authenticity certificates, rigorous laboratory test reports, and official quality assurance documents.
How do you support the physical erection of the bridge on-site?
We ensure your construction team is fully equipped for success. We supply detailed assembly drawings, comprehensive installation manuals, and instructional video guides. Furthermore, we offer expert on-site supervision services and maintain a 24-hour global after-sales support hotline to address any immediate technical challenges.
What is the recommended procedure for installing the transoms during erection?
Because a single transom weighs just under 1 ton, it can be efficiently maneuvered using a small crane. To maximize structural stability during the build, we recommend installing the nearest and farthest transoms first (within the crane's safe operating capacity), and then systematically filling in the intermediate transoms.
