GB/T 27866-2023 Chinese PDF (GB/T27866-2023) GB/T 45234.302-2025 English versions: GB/T 45099-2024

English versions: GB/T 45099-2024

English versions: GB/T 28892-2024

GB/T 18281

GB/T 21711

22-2023_Chinese: Industrial-process measurement and control - Data structures and elements in process equipment catalogues - Part 22: Lists of properties (LOPs) of valve body assemblies for electronic data exchange (Chinese: 工业过程测量和控制 过程设备目录中的数据结构和元素 第22部分：阀体总成电子数据交换用属性列表(LOPs))

GB/T 27866-2023 Chinese PDF (GB/T27866-2023) GB/T 45234.302-2025 English versions: GB/T 45099-2024GB T 27866 2023_Chinese: Specification of controlling weld hardness of steel pipe and equipment to prevent sulfide stress cracking (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 27866 2023