Short answer. PSL2 is a product specification level under API 5L / ISO 3183 with tighter chemistry, toughness and inspection requirements than PSL1. It is not automatically required for a municipal water main.
- Water transmission projects are normally specified under AWWA C200 rather than a line-pipe PSL level.
- If the owner does call for PSL2, state the grade, edition and any supplementary requirements.
- PSL2 affects mill test certificates, impact testing and traceability, all of which belong in the ITP.
- Do not add PSL2 for safety without checking the owner’s specification; it changes cost and lead time.
Confirm whether the project is AWWA-based or API 5L / ISO 3183-based before fixing the material clause.
Where a water project is funded by a development bank, the material clause is often reviewed line by line, so an unrequested PSL2 addition can trigger questions about the basis of the design.
See our spiral welded steel pipe for the supply range. Send the material clause from your specification and we will tell you whether PSL2 actually applies. Send your enquiry.
