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GB/T 38659
English versions: GB/T 40425
3-2025_Chinese: Petroleum and natural gas industries - Materials for use in H2S-containing environments in oil and gas production - Part 3: Cracking-resistant CRAs(corrosion-resistant alloys) and other alloys (Chinese: 石油天然气工业 油气开采中用于含硫化氢环境的材料 第3部分：抗开裂耐蚀合金和其他合金)
GB/T 15566
GB/T 31033-2025_Chinese: Technical requirements for well control technology of oil and gas drilling (Chinese: 石油天然气钻井井控技术要求)
GB/T 26846-2024 Chinese PDF (GB /T26846-2024) GB/T 18760-2025 GB/T 38659GB T 26846 2024_Chinese: Lead out wire and connector of motor and controller used for electric bicycles (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 26846 2024
