Versions of Oregon Statutes 480.647 - Quality control procedures for welding on nonboiler external piping; rules on LawServer 2023 Oregon Statutes 480.647 – Quality control procedures for welding on nonboiler external piping; rules 2021 Oregon Statutes 480.647 – Quality control procedures for welding on nonboiler external piping; rules 2019 Oregon Statutes 480.647 – Quality control procedures for welding on nonboiler external piping; rules 2017 Oregon Statutes 480.647 – Quality control procedures for welding on nonboiler external piping; rules 2015 Oregon Statutes 480.647 – Quality control procedures for welding on nonboiler external piping; rules 2013 Oregon Statutes 480.647 – Quality control procedures for welding on nonboiler external piping; rules 2009 Oregon Statutes 480.647 – Quality control procedures for welding on nonboiler external piping; rules
