D28 3D Welding Table System for Flexible Jig and Fixture Setups
Our D28 3D Welding Table System for Flexible Jig and Fixture Setups is a modular 5-face 3D welding fixture solution with Φ28 H7 hole system on 100×100 mm grid. It enables fast flexible jig and fixture setups without custom tooling. Stress-relieved base material plus plasma nitriding guarantees high precision, anti-spatter performance and heavy-load capacity. Widely applied for chassis, heavy structural fabrication and robot welding stations, the system supports table splicing and full-range standard accessories for flexible production.

Complete System Components
- D28 Welding Table Body: 5 sides with standard D28 grid holes; X/Y millimeter graduations on the table surface for easy reading and positioning.
- Support Leg Assembly: Adjustable horizontal support legs; adjusts the table height by 800-900mm; adjusts the platform surface.
- Complete Set of Modular Fixture Accessories (Core Flexible Tooling):
- Positioning: Positioning pins, V-blocks, right-angle rulers, stops, positioning supports
- Clamping: Quick-locking pins, screw clamps, toggle clamps, pneumatic/hydraulic clamping modules
- Support Adjustment: Adjustable support blocks, height-increasing pads, angle adjustment blocks
- Connecting Splicing Components: Splicing pins, connecting plates, enabling expansion by splicing multiple worktables.
- Optional Expansion: Robot base interface, flip tooling, rotary worktable.
Core Advantages

- Flexibility and Cost-Effective Tooling: No need for individual welding molds for each workpiece; standard components can be reassembled, and new product tooling can be switched, completing the process within hours.
- 3D Spatial Clamping (3D Core): Holes on all four sides, not just the table surface, allow for multi-angle positioning and clamping of the workpiece in the side and height directions, enabling welding of complex steel structures and frame-like workpieces.
- Heavy-Duty and High Rigidity: The D28 welding table has large apertures and strong locking force, making it suitable for heavy-duty welding of large steel structures, engineering machinery, vehicle frames, containers, pressure vessels, etc.
- Stable Precision: Aging stress relief + nitriding wear resistance ensures high repeatability and positioning accuracy even after repeated fixture disassembly and assembly, reducing welding misalignment and dimensional errors.
- Automation Compatibility: Perfectly integrates with robotic welding workstations and can be programmed with measurement protocols for use in automated production lines.
Complete Tolerance System
| Parameter |
Specification |
| Hole Diameter |
Φ28H7; Actual Hole Diameter: 28.065-28.149mm, compatible with D28 standard locating pin 28h7 |
| Single Hole Spacing Tolerance |
Adjacent holes ±0.05mm; Cumulative hole spacing error ≤±0.10mm over 1000mm |
| Flatness (GB/T22095-2008) |
Grade 0 (Robot Precision): ≤0.05mm/1000mm; Grade 1 (Industrial Standard): ≤0.10mm/1000mm |
| Side Perpendicularity |
≤0.1mm/200mm (200mm side height) |
| Repeatability (Locating Pin) |
≤0.02mm |
| Nitriding Layer Thickness |
0.25-0.5mm |
Our D28 3D Welding Table System for Flexible Jig and Fixture Setups delivers high-precision, heavy-duty modular fixturing for welding and assembly.
Share your project parameters with us, and our engineering team will offer you a suitable proposal and competitive offer.
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