GB/T 20972.2-2025

Petroleum and natural gas industries—Materials for use in H2S-containing environments in oil and gas production—Part 2: Cracking-resistant carbon and low alloy steels, and the use of cast irons

石油天然气工业 油气开采中用于含硫化氢环境的材料 第2部分：抗开裂碳钢、低合金钢和铸铁