The standard applies to weldable reinforcing steel bars and wires used in concrete structures, from high-rise buildings to highway bridges and tunnel segments.
The document specifies how to prove the weld is strong enough. It details: en iso 17660-1 pdf
Specifies approved methods such as manual metal arc welding (111), metal active gas welding (135), and flash welding (24). The standard applies to weldable reinforcing steel bars
Imagine a welded rebar lap joint on a bridge abutment. The welder skipped preheating because “it looked fine.” The weld passes visual inspection but fails a bend test per EN ISO 17660-1. Months later, under live load, a brittle fracture occurs. metal active gas welding (135)