Ringlock Scaffolding Base Jack Adjustable Galvanized Screw Jack Disc-Lock System

• Versatile Dimension Matrix: Engineered in ∅30mm and ∅35mm stem diameters with versatile working heights (270mm, 300mm, and 600mm) to deliver precise leveling across varied terrain and structural requirements.
• Superior Heavy-Duty Load Capacity: Fabricated from premium structural carbon steel with a heavy-gauge base plate and 360° full circumferential robotic welding, ensuring maximum compressive resistance without deformation or settlement.
• Precision Cold-Rolled Trapezoidal Thread: Self-locking Acme/trapezoidal thread profile prevents slippage and unintended backing out under heavy dynamic loads while ensuring smooth height adjustments even in dusty, muddy construction environments.
• High-Toughness Cast Wing Nut: Heavy-duty ductile iron / drop-forged wing nut provides balanced leverage for quick, effortless manual leveling on-site, with integrated safety stop design.
• Pre-Punched 4-Hole Base Plate: Rigid square base plate features four pre-punched anchor holes for secure fastening with anchor bolts or nails on concrete and timber sole boards, distributing ground pressure evenly.
• Industrial-Grade Corrosion Protection: Available in Electro-Galvanized (EG) and Hot-Dip Galvanized (HDG) finishes, offering exceptional salt-spray and weathering resistance for prolonged outdoor lifespan and high turnover cycles.

On complex job sites—including bridge construction, commercial high-rises, shoring frameworks, and temporary staging—ground unevenness and elevation variances pose major structural hazards.

• Graduated Length Selection: Available in 270mm (compact), 300mm (standard), and 600mm (extended reach) total heights, providing flexible elevation compensation for both foundation leveling and overhead slab formwork alignment.
• Seamless System Integration: Precisely matched to standard scaffolding vertical standards (∅48.3mm / ∅60.3mm), integrating seamlessly with Ringlock, Cuplock, Kwikstage, Frame, and Traditional Tube & Coupler scaffolding systems with minimal axial play.

• High-Strength Rolled Threading: Cold-rolled rather than cut, preserving metal grain integrity and boosting thread shear strength by over 30%. Resists thread stripping, galling, or binding under extreme axial compression.
• Vibration-Resistant Self-Locking: Optimized pitch-to-lead angle creates positive mechanical friction under load, preventing the handle nut from creeping or loosening under continuous vibration or cyclic live loads.
• Self-Cleaning Action: Deep trapezoidal thread design naturally clears out slurry, concrete splatter, and debris, ensuring fast, jam-free rotation on rugged job sites.

• Impact-Resistant Cast Iron / Forged Steel: Manufactured from high-tensile ductile iron (QT450 / QT500) or drop-forged carbon steel, capable of withstanding rough job-site handling, tool leverage, and mallet strikes without cracking.
• Balanced Dual-Wing Leverage: Dual ergonomic wings provide balanced torque, enabling single-worker micro-adjustment down to the millimeter. Optional thread crimping at the top prevents the nut from accidentally running off the stem.

• Anchoring Stability: Stamped square steel plate distributes point loads across sole boards or concrete pads to prevent ground sinking. Four corner anchor holes allow fast bolting down to eliminate base slippage in high-wind or seismic zones.
• 360° Automated Continuous Welds: Uniform, slag-free, full-penetration robotic fillet weld joins the threaded stem and base plate, tested for high bending moments and shear resistance under eccentric loading.

• Corrosion Barrier: Zinc coating forms a metallurgical barrier against atmospheric moisture, coastal salt air, and concrete alkalinity, eliminating rust-induced seizure.
• High ROI for Rental & Contracting: Durable construction and rust resistance support dozens of reuse cycles, drastically lowering total cost of ownership (TCO) and replacement frequency for scaffolding rental companies and contractors.

Custom Options: Solid Steel Bar or Hollow Steel Tube; Base plate thickness (4mm/5mm/6mm/8mm); Surface finish (Electro-Galvanized, Hot-Dip Galvanized, Painted).

1. Building Construction & Facade Shoring: Provides rigid, level footings for perimeter scaffolding, ensuring true vertical alignment across multi-story facades.
2. Bridge, Viaduct & Tunnel Falsework: Supports heavy wet-concrete pours and precast girders with fine-tuned slab elevation control.
3. Industrial Plant Maintenance & Refineries: Rapid, secure leveling on uneven concrete slabs, gravel yards, and around complex mechanical infrastructure.
4. Temporary Staging & Grandstands: Stable foundation for outdoor concert stages, event bleachers, and broadcast towers on sloping or unpaved terrain.

• International Standard Compliance: Tested and compliant with EN 74-1, BS 1139, ANSI/SSFI SC100-5/05, and AS/NZS 1576 standards. Complete mill test certificates (MTC) and third-party load test reports (SGS/TUV) available.
• Automated High-Capacity Manufacturing: Dedicated CNC thread-rolling and robotic welding lines ensure tight dimensional tolerances (±0.5mm) and on-time shipment for full-container-load (FCL) orders.
• Custom OEM/ODM Engineering: Tailored solutions for custom lengths, imperial Acme threads, U-Head Jack assemblies, custom base hole patterns, and customer logo embossing.
• Optimized Sea-Freight Packaging: Packed on fumigation-free wooden pallets or heavy-duty steel stillages with moisture-proof shrink wrap and high-tensile steel strapping for safe container handling and efficient warehouse stacking.
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