GB/T 18216.11-2024 Chinese PDF (GB /T18216.11-2024) GB 28263-2024 and the use of cast

and the use of cast irons (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2部分：抗开裂碳钢、低合金钢和铸铁)

GB/T 21099

8-2025_Chinese: Design specification for mechanical components in nuclear island of pressurized water reactor nuclear power plants - Part 8: Low pressure or atmospheric storage tanks (Chinese: 压水堆核电厂核岛机械设备设计规范 第8部分：低压或常压储罐)

GB 23394-2024_Chinese: Respiratory protection - Positive pressure self-contained closed-circuit compressed oxygen breathing apparatus (Chinese: 呼吸防护 正压式自给闭路压缩氧气呼吸器)

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 18216.11-2024 Chinese PDF (GB /T18216.11-2024) GB 28263-2024 and the use of castGB T 18216. 11 2024_Chinese: Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC Equipment for testing, measuring or monitoring of protective measures Part 11: Effectiveness of residual current monitors(RCM)in TT, TN and IT systems (Chinese: 1000V1500V 11TTTNITRCM) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 18216. 11 2024