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GB/T 7247.1-2024 Chinese PDF (GB/T7247.1-2024) GB/T 18262-2024 GB/T 27866-2023_Chinese: Specification of controlling

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GB/T 27866-2023_Chinese: Specification of controlling weld hardness of steel pipe and equipment to prevent sulfide stress cracking (Chinese: 钢制管道和设备防止焊缝硫化物应力开裂的硬度控制技术规范)

English versions: GB/T 45502-2025

English versions: GB/T 13818-2024

2-2024_Chinese: Cast iron pipe flanges - Part 2: Class designated (Chinese: 铸铁管法兰 第2部分：Class系列)

GB/T 7247.1-2024 Chinese PDF (GB/T7247.1-2024) GB/T 18262-2024 GB/T 27866-2023_Chinese: Specification of controllingGB T 7247. 1 2024_Chinese: Safety of laser products Part 1: Equipment classification and requirements (Chinese: 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 7247. 1 2024

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