Many free PDFs are scanned copies of the original 2006 draft, missing Amendment A1:2010 . Amendment A1 introduced critical changes to fatigue testing requirements for dynamically loaded reinforcement (e.g., bridge decks, railway sleepers). Using an old PDF means your welds may fail fatigue verification.
Many users search for a "free PDF" download of this standard. However, ISO standards are copyrighted documents protected by international law. en iso 176601 pdf
If you regularly purchase many standards, consider: Many free PDFs are scanned copies of the
ISO 17660-1:2006(en), Welding — Welding of reinforcing steel Many users search for a "free PDF" download of this standard
This standard applies to both workshop and on-site welding of weldable reinforcing steel and stainless reinforcing steel. It is specifically limited to and does not cover non-load-bearing joints (which are covered in ISO 17660-2 ) or factory production of welded fabric using multiple spot/projection welding machines. Key Requirements
The standard EN ISO 17660-1 specifies the technical requirements for the welding of load-bearing joints