Scaffolding Base Jack

Adjustable Scaffold Base Jack / Screw Jack Base

Solid & Hollow Heavy-Duty Ground Support for Scaffolding Systems

EK Scaffolding’s adjustable base jacks provide exact height regulation and maximum weight distribution on uneven construction sites. Cold-rolled threads and hot-dip galvanized finish ensure continuous site durability under extreme loads.

• Standard Compliance: EN74-1 / BS1139 / AS/NZS 1576

• Stem Type: Solid Steel Rod / Hollow Seamless Steel Tube

• Surface Finish: Hot-Dip Galvanized / Electro-Galvanized / Painted

• System Fit: Compatible with Ringlock, Kwikstage, Cuplock, Frame & Tube Coupling Systems

Technical Specifications

Key Advantages

1. Precision Cold-Rolled Threads

• Continuous cold-rolled thread pitch enables smooth nut movement even when contaminated with concrete slurry or dirt.

2. Premium Structural Welding

• 360° robot-welded connection between stem and base plate guarantees no structural shear failure under heavy loads.

3. Corrosion-Resistant Galvanizing

• Hot-dip galvanizing layer (>80μm) protects against rusting in humid, coastal, or chemical environment jobsites.

4. High Load Safety Margin

• Engineered to pass stringent destruction tests, providing a safety factor exceeding standard construction safety regulations.

Manufacturing & Production Process

To ensure every Base Jack provides consistent load capacity and precise functionality, EK Scaffolding adheres to a standardized, seamless manufacturing process:

• Raw Material Selection

  • Uses high-grade Q235 / Q345 structural steel (seamless steel pipe or solid steel bar) to ensure superior compression resistance from the source.

• Precision Cold-Rolled Threading

  • Replaces traditional thread-cutting with advanced extrusion cold-rolling technology. This keeps the thread metal fibers continuous, resulting in a smooth surface finish and increasing fatigue strength by over 20%.

• Automated Robotic Welding

  • The connection between the screw rod and the 150×150mm base plate is welded using a 360° automated robotic welding system, guaranteeing uniform, full-penetration welds and eliminating cold welding or missed spots.

• Hot-Dip Galvanizing & Surface Finishing

  • After acid pickling and rust removal, components are immersed in a 450°C molten zinc bath for hot-dip galvanization (average zinc coating thickness >80μm), forming a durable corrosion-resistant zinc-iron alloy layer.

• Precision Thread Fit & Nut Assembly

  • Paired with high-toughness ductile iron nuts, each unit undergoes a smooth-threading test before leaving the factory to prevent jamming from concrete slurry on job sites.

Quality Control & Inspection

EK Scaffolding maintains a fully equipped testing laboratory and a strict inspection workflow to guarantee a 100% pass rate:

• Ultimate Compression Test: Samples are randomly selected for destructive load testing to ensure the Safe Working Load (SWL) reaches 40 KN to 100+ KN (meeting a 2.0x safety factor).

• Galvanizing Coating Thickness Test: Coating thickness is verified batch-by-batch using digital gauges to guarantee long-term rust protection.

• Weld Seam NDT Inspection: Non-destructive tensile and flaw detection tests are performed on critical structural orders to verify weld integrity between the stem and base plate.

• Dimension & Thread Pitch Inspection: Thread pitch tolerances are strictly controlled to ensure seamless compatibility with various global scaffolding systems.

Applications

• Modular Scaffolding Foundation: Base support for Ringlock and Kwikstage system scaffolding towers.

• Shoring & Formwork: Supporting heavy concrete slab formwork and beam shoring structures.

• Industrial Construction: Shipyards, oil & gas refurbishments, bridge piers, and power plant scaffolding.

Factory & Certificate Showcase

FAQ

Q1: What is the difference between solid and hollow base jacks?

Solid base jacks offer maximum heavy-duty load capacity (ideal for heavy shoring and high-rise towers), while hollow base jacks are lighter, more cost-effective, and easier to transport without sacrificing compliance standards.

Q2: Can EK Scaffolding customize base jack dimensions based on project drawings?

Yes. As an OEM/ODM manufacturer, we can manufacture custom stem diameters, base plate thickness, thread lengths, and branding marks according to your exact engineering requirements.

Need Custom Specifications or Bulk Factory Pricing? Contact our engineering team today for technical catalogs, mill test certificates (MTC), and FOB/CIF quotations.