D28 Splicing 3D Welding Table for Long Steel Profiles
The D28 Splicing 3D welding table is a heavy-duty, high-precision modular industrial welding fixture platform specifically engineered for long steel profiles. Its core advantages include ultra-long splicing capability, exceptional rigidity, and comprehensive three-dimensional positioning, making it ideal for precise positioning, efficient assembly, and stable welding of extended steel components.
Technical Specifications
| Hole Spacing |
100mm × 100mm |
| Hole Diameter |
Φ28mm |
| Tabletop Thickness |
200mm |
| Material |
HT300 cast iron |
| Hardness |
HRC50+ |
| Hole Position Accuracy |
±0.05mm |
| Single Unit Load Capacity |
5-10 tons |

Countertop System Features
- Hole System: Φ28mm round holes in 100mm×100mm grid array with positional accuracy of ±0.05mm
- Material Options: HT300 high-strength cast iron for superior rigidity, shock absorption, wear resistance, and deformation resistance; Q355 high-carbon steel welded structure available for lightweight applications requiring high toughness
- Surface Treatment: Quenching/nitriding/precision grinding with hardness HRC50+, providing excellent wear resistance, rust protection, and resistance to weld slag adhesion
- Construction: 100-150mm thickness with built-in reinforcing ribs ensuring minimal deflection under load
- Standard Sizes: Common configurations include 1000×1000mm, 1000×2000mm, and 2000×2000mm units, with capability for arbitrary assembly into extra-long workbenches of 3m, 5m, 8m, 12m, or longer
- Load Capacity: 5-10 tons per unit, with combined capacity exceeding 20 tons when spliced together, suitable for heavy-duty long steel profiles
Splicing and Expansion Capabilities
- Five-Sided Machining: Tabletop and all four sides feature standard D28 holes for unlimited horizontal, vertical, and lateral splicing
- Splicing Accuracy: Flatness of splicing seam ≤0.05mm/m, ensuring exceptional straightness for long workpieces
- Expansion Methods: Multiple units can be spliced end-to-end for ultra-long straight worktables (e.g., 10m × 2m) or side-by-side for ultra-wide configurations (e.g., 4m × 6m)
- Complex Configurations: Capable of forming L-shaped, U-shaped, and other complex workstation layouts to suit specific manufacturing requirements
Typical Application Scenarios
- Steel Structure Engineering: Assembly and welding of H-beams, I-beams, box columns, and steel beams
- Construction Machinery: Long structural components including excavator booms, crane booms, and loader frames
- Bridges and Ships: Extra-long components such as bridge box girders, ship deck longitudinals, and bulkheads
- Conveying Equipment: Long profile structures including conveyor frames, guide rails, and roller supports
- Metal Processing: Welding of long steel components for large frames, bases, columns, and structural elements
Selection Criteria
- Length Requirements: Determine number of tables based on longest workpiece length (e.g., 4 tables of 2m x 1m for 8m workpiece)
- Load Capacity: Select table surface thickness and material based on total workpiece weight (HT300 cast iron with 150mm thickness recommended for heavy-duty applications)
- Precision Needs: Choose cast iron table surface with precision grinding and nitriding treatment for high precision requirements
- Clamping Solutions: Long profiles require appropriate V-blocks, universal clamping arms, and central support components for optimal fixturing