08/09/2026
Semi‑trailer guard rails come in two types — side and rear underrun protection — and are mandatory safety devices under GB 11567, keeping pedestrians and two‑wheelers from being dragged under the vehicle. Most are made of Q235 carbon‑steel square/rectangular tubes; some lightweight models use high‑strength steel.
This is medium‑difficulty welding. The real challenge is not a good‑looking bead but strength, dimensional tolerance, distortion control and regulatory strength. Continuous welding brings excessive heat input, causing warpage and size deviation that hurt strength and batch consistency.
With the Artsen Plus intermittent welding process, robotic welding machine delivers stable, well‑controlled intermittent welds. Precise heat‑input control reduces distortion while maintaining weld strength and dimensional tolerances.
The automated workstation supports efficient mass production with uniform weld beads, fewer straightening steps and faster cycle times — helping trailer makers cut costs and raise efficiency, with proven solutions for intelligent manufacturing of commercial‑vehicle steel structures.