GB 23394-2024 Chinese PDF GB 31616-2025 GB/T 12385-2025_Chinese: Standard test methods

Name: GB 23394-2024 Chinese PDF GB 31616-2025 GB/T 12385-2025_Chinese: Standard test methods
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GB/T 12385-2025_Chinese: Standard test methods for sealability of gaskets for pipe flanges (Chinese: 管法兰用垫片密封性能试验方法)

English versions: GB 23394-2024

1-2025_Chinese: Aluminium base brazing filler metals - Part 1: Solid brazing filler metals (Chinese: 铝基钎料第1部分：实心钎料)

English versions: GB 25596-2025

GB 23394-2024 Chinese PDF GB 31616-2025 GB/T 12385-2025_Chinese: Standard test methodsGB 23394 2024_Chinese: Respiratory protection Positive pressure self contained closed circuit compressed oxygen breathing apparatus (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 23394 2024

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