GB/T 45418-2025 Chinese PDF (GB /T45418-2025) GB/T 45472-2025 3-2025_Chinese: Petroleum and natural gas

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 20042

GB/T 44473-2024_Chinese: LED lamps

English versions: GB 19272-2024

GB/T 45418-2025 Chinese PDF (GB /T45418-2025) GB/T 45472-2025 3-2025_Chinese: Petroleum and natural gasGB T 45418 2025_Chinese: General technical directives for distribution networks (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45418 2025