It is important to know what it means when NACE is requested and what is required of the material. NACE MR0103 and its requirement is reviewed
Standards Update: API 600 Gate Valve 2nd Ballot
The new revision of API 600, expected for publish late 2021 or 2022, will incorporate group 3 material from ASME and have optional clauses for purchaser to issue special stem packing in lieu of the one used during API 624