Precision Ground D28 Welding Table For TIG MIG Welding

Our Precision Ground D28 Welding Table for TIG and MIG welding is a high-precision modular 3D/2D welding fixture platform built for professional metal fabrication. After stress relief, CNC machining and precision surface grinding, the tabletop delivers stable, consistent flatness, paired with a standard Φ28mm H7 hole system on a 100×100mm grid. Fully optimized for both delicate TIG precision welding and heavy-duty MIG fabrication, it enables fast workpiece positioning, repeatable assembly and flexible fixture rearrangement. With optional plasma nitriding treatment for superior spatter resistance and wear protection, this D28 welding table is widely adopted in robotic welding stations, chassis production, and stainless steel and aluminium structure welding.

• Hole Specifications: Φ28mm H7 positioning holes arranged in a 100×100mm grid; hole-to-hole tolerance: ±0.03 to ±0.05mm.
• Flatness (key metric from precision grinding): Standard precision ≤0.1mm/1000mm; high-precision version available at 0.05mm/1000mm (ideal for robotic TIG welding).
• Material: Options include Q355 steel, HT300 cast iron, or mold steel. Surfaces are typically treated via ion nitriding (HV550+), providing resistance to weld spatter, wear, and high-temperature deformation.
• Tabletop Thickness: Standard 5mm, featuring an integrated structure with reinforcing ribs on the underside; stress-relief aging treatment ensures minimal deformation during welding.
• Load Capacity: 700–1000 kg per leg; total static load capacity ranges from 3 to 10 tons.
• Configuration: 2D (top surface only) or 3D (top surface plus four sides, all featuring D28 holes, allowing for five-sided clamping and multi-angle fixturing).

After the steel plates are cut and the reinforcing ribs are welded, the structure undergoes artificial aging or vibratory stress relief to eliminate residual welding stresses. For models made of HT300 cast iron, the material is subjected to annealing (aging) after the casting process.

Purpose: This ensures that the table surface does not undergo gradual deformation or "spring-back" following subsequent CNC milling and precision surface grinding. Maintaining long-term flatness is an essential requirement for robotic TIG welding.

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16. Modular Configuration: Featuring a standard D28 hole pattern, multiple welding tables can be joined together using connecting pins and joining blocks to create an extra-large platform—ideal for long vehicle frames or large-scale structural beams (such as those used in rail transit). Once joined, the hole grid remains perfectly aligned, ensuring a continuous reference surface.
17. Accessory Compatibility: Designed to the international D28 standard, these tables are fully compatible and interchangeable with D28-series fixtures from major European brands. This includes a wide range of accessories such as quick-locking pins, positioning squares, V-blocks, adjustable supports, screw clamps, pneumatic clamps, stop blocks, and riser blocks.

• Certifications: CE (Machinery Directive), ISO9001; third-party inspection by BV and Mill Test Certificates are available upon request.
• Packaging: Fumigation-free plywood export crates, reinforced with internal timber bracing and corner protectors to prevent damage during maritime lifting and handling. Precision-ground surfaces are covered with protective film; extra care is taken, as any impact or dent would compromise the precision and render the unit unusable.
• Lead Time: 15–25 days for standard sizes; longer lead times apply to custom extra-large dimensions, Grade 0 high-precision units, and cast-iron models.
• Warranty: 2–3 years for the tabletop (covers deformation or defects in the hole pattern, provided there is no damage from overloading or physical impact); generally 1 year for fixture accessories. Remote video guidance is provided for leveling, fixture setup, and precision re-verification.