100% of all welds must undergo visual inspection to check for surface cracks, undercut, incorrect weld profile, and excessive spatter.
Directly from ISO: www.iso.org/standard/55442.html
It is important to distinguish that covers load-bearing joints , while Part 2 (ISO 17660-2) covers non-load-bearing joints. Scope and Applicability of ISO 17660-1 en iso 176601 pdf
Applicable to non-load-bearing welded joints (e.g., tack welds used only for holding bars in place during transport or concrete pouring). 2. Scope and Materials Covered
In the EU and UK, construction products must adhere to harmonized standards. EN ISO 17660-1 is often cited in tender documents and construction contracts. Auditors will ask for proof of compliance. 100% of all welds must undergo visual inspection
Note: Always ensure you are using the latest version of the standard. Conclusion
: Applies to weldable reinforcing steel and stainless reinforcing steel. Excluded Items : Does not cover non-load-bearing (tack) joints (see ISO 17660-2 ) or mass-produced welding fabric/lattice girders. Diameter Ranges : Covers bar diameters from 4 mm up to 50 mm Auditors will ask for proof of compliance
EN ISO 17660-1:2017 (not PDF, but I'll get to that later) is a European Standard that defines the requirements for the resistance welding of metallic materials. Here's a detailed article: