D28 Extra Large 3D Welding Table for Heavy Structural Projects The D28 Extra Large 3D Welding Table for Heavy Structural Projects
is an industrial-grade flexible tooling platform designed for
ultra-large, heavy-duty, and high-precision steel structure
welding. Based on the D28 standard hole system, it is specifically
designed for the welding, assembly, and inspection of oversized
workpieces in industries such as construction machinery,
shipbuilding, bridges, and heavy equipment, addressing the
shortcomings of traditional tooling such as poor rigidity, large
deformation, slow changeover times, and high costs. | Hole diameter | Φ28.065–28.149mm(H7) | | Hole spacing | 100×100mm | | Hole depth | ≥25mm | | Basic material | Q355/HT300/HT250 | | Surface treatment | Nitriding / Quenching | | Hardness | HV900–1200 | | Standard load-bearing capacity | 3000kg/m² |
D28 Flexible Hole System - Extra-large load-bearing holes: 28mm diameter holes with a
deep-hole design, each hole can withstand a clamping force of ≥5
tons, suitable for heavy-duty clamps and hydraulic fixtures.
- Rapid reconfiguration: Tooling changeover can be completed in 5–15
minutes, replacing the traditional 1–2 week design and
manufacturing cycle for dedicated tooling.
- Unlimited expandability: Multiple units can be joined together
without length or width limitations, meeting the welding
requirements for ultra-long workpieces (such as ship sections and
bridge girders) exceeding 100 meters.
Surface treatment and durability - Nitriding/Quenching Composite Treatment: The D28 Extra Large 3D
Welding Table for Heavy Structural Projects features a surface
hardness of HV900–1200, providing a wear-resistant lifespan of
15–20 years, 3–5 times longer than ordinary welding tables.
- High Temperature and Corrosion Resistance: It can operate
continuously at 600℃ without softening or deformation; 480 hours of
salt spray testing showed no rust, making it suitable for harsh
industrial environments.
- Easy to Clean: The D28 Extra Large 3D Welding Table for Heavy
Structural Projects has a non-stick surface that prevents welding
slag buildup, allowing for quick cleaning with a dedicated scraper,
resulting in low maintenance costs.
Seamless splicing technology - The D28 Extra Large 3D Welding Table for Heavy Structural Projects
uses specialized high-precision splicing and positioning pins
(Φ50mm, tolerance ±0.01mm) and high-strength bolts for double
fixation, allowing for seamless connection of multiple tables with
a hole alignment accuracy of ≤0.03mm.
- The D28 Extra Large 3D Welding Table supports splicing in any
direction (horizontal/vertical), and can be assembled into an
extra-large welding platform up to 10m × 20m, meeting the needs of
extra-long workpieces such as ship sections and bridge box girders.
- Cable/air pipe routing channels are reserved at the splicing points
for convenient wiring of automated equipment, keeping the table
surface clean and tidy.
|
