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D28 3D Welding Table with Precision Ground Flat Surface
The D28 3D Welding Table with Precision Ground Flat Surface is a three-dimensional flexible modular tooling platform designed for heavy industry, high-precision welding, and the assembly of complex structural components. Based on the D28 standard hole pattern and precision-ground flat surface, it combines ultra-high load capacity, three-dimensional positioning, exceptional accuracy, and long-term stability. It is a core tooling equipment for heavy-duty precision welding in fields such as engineering machinery, shipbuilding, and pressure vessels.
Hole diameter
Φ28 mm
Hole spacing
100 × 100 mm (standard grid)
Countertop material
High-strength HT250/HT300 cast iron or Q355 alloy steel
Countertop thickness
25mm
Surface treatment
Precision grinding + nitriding treatment
Hole center accuracy
±0.03–0.05 mm
Flexible positioning
5-Sided Precision Machining: One top surface and four side surfaces are uniformly drilled with D28 holes, enabling three-dimensional positioning in X/Y/Z axes without blind spots, allowing for multi-angle clamping of complex workpieces.
Hole System Accuracy: CNC machining ensures hole positions within ±0.03–0.05 mm, providing extremely high repeatability and consistency, suitable for high-volume precision welding.
Modular Fixture: Compatible with D28 series three-dimensional adjustable fixtures, quick-locking pins, and positioning angle irons, allowing for tool-free, rapid changeover in 5 minutes, adaptable to hundreds of different workpieces.
Accuracy and stability
The work surface undergoes stress relief annealing and precision grinding, completely eliminating internal stress. It remains free from deformation, warping, or sagging even under prolonged high-temperature welding and heavy loads.
The precision-ground surface offers extremely high flatness, ensuring greater workpiece stability, reduced welding deformation, and higher dimensional consistency.
The hole system is processed with high-precision CNC machining, guaranteeing long-term stability of hole positions, perpendicularity, and parallelism, and consistent accuracy for repeated clamping, making it suitable for high-precision mass production.
The cast iron/thickened steel plate structure provides excellent resistance to vibration, torsion, and impact, resulting in virtually no vibration during welding and ensuring stable weld quality.
Value Summary
The D28 3D Welding Table with Precision Ground Flat Surface is the ultimate solution for heavy-duty industrial high-precision welding:
Its D28 three-dimensional hole system enables infinitely flexible positioning, quickly adapting to complex structural components;
The precision-ground flat surface guarantees micron-level accuracy and long-term stability without deformation;
The heavy-duty structure and nitrided surface provide ultra-high load capacity, extended lifespan, and low maintenance costs;
It is a core piece of equipment that replaces traditional fixed jigs, improves welding accuracy and efficiency, and reduces production costs.