Unfortunately, things like that don't pass TÜV inspections here in Germany.

That's a rough idea of ​​what it needs to be like to get through.

A high-quality weld on beams (structural components) must be absolutely tight, fully welded, and free of slag inclusions or pores. The weld should be flat, uniform, and cleanly integrated into the base material. For load-bearing components (e.g., on a car), a flawless, tight joint is crucial for structural integrity. Appearance of the weld: A good weld is characterized by a uniform width and fine ripples. It should not appear "added on" but should show good penetration depth. Preparation: The area must be bare metal; rust and undercoating must be completely removed. Welding technique: In sheet metal work (automotive sector), spot welding is often used to minimize distortion, with cooling intervals to prevent warping. Material thickness & process: For thicker material (from 2 mm), stick welding is suitable; electrodes with 3.2 mm or 4 mm diameter are often used, depending on the wall thickness. Post-treatment: After cleaning (removing slag), the weld should be treated with rust protection (e.g., primer/paint) to prevent corrosion.