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ANSI/NACE MR0175-2021/ISO 15156:2020
Petroleum and Natural Gas Industries-Materials for Use in H2S-Containing Environments in Oil and Gas Production. Parts 1, 2, and 3. (Also includes Technical Circulars, Erratas February 2025/November 2026)
Addresses requirements and recommendations for the selection and qualification of carbon and low-alloy steels, corrosion-resistant alloys, and other alloys for service in equipment used in oil and natural gas production and natural gas treatment plants in H2S-containing environments. Unlike previous versions of MR0175, the three parts of the standard are combined into one pdf file. The three most recent Technical Circulars for ISO 15156:2020 are also included. Includes errata.
NACE International [nace]