Demo the Gantry Welder on Your Own Steel Workpiece
Buyers should require a demonstration on their own steel workpiece, then verify travel, envelope fit, and 9-axis motion against the reference values before acceptance.
Ask the supplier to weld a representative section of your own steel workpiece, not a stock sample, before you commit. A gantry workstation's value depends on whether the torch reaches every joint on your part, so the demonstration should use your material thickness, joint type, and fixture concept.
In the request for quotation, specify the workpiece dimensions and ask the supplier to confirm fit against the reference maximum envelope of 13,500 × 3,500 × 2,000 mm and the standard effective X travel of 13,500 mm, with effective Y / Z travel of 2,400 / 1,500 mm. Treat these as catalog reference values, not guarantees for a supplied model. Ask how the 9 synchronized axes are used during the demo and whether the motion path covers the full seam.
For the acceptance test, agree on which seams are welded, how the part is located, and what the buyer will inspect. Ask whether the demonstration can show the longest and widest joint on your part, and what happens when the workpiece approaches the envelope limits.
Before requesting a quote, confirm with the supplier that the demonstration uses your steel grade and thickness, that fixture and programming support are included, and that the travel and envelope figures are verified for the exact configuration offered.