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English Translations » 【管道阀门技术圈】 » The issue of the minimum operating temperature for low-tempe

The issue of the minimum operating temperature for low-temperature pipelines

2018-02-11View Original

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Table A1 of GB20801.2 specifies the minimum operating temperature for pipes; in section 3.1.1, the minimum temperature for both 10MnDG and 16MnDG is -46°C, whereas in GB18984, the impact test temperature for these two materials is -45°C. Why is there a difference of 1 degree between the temperatures specified by these two standards?
Reply #22018-02-12
The impact test temperature for the American standard ASTM A333-6 for low-temperature pipelines is -50°F, which is exactly the same as that specified in ASME B31.5. So there might be an issue with the minimum temperature specified in GB20801.2?

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Translated at 2026-07-21 04:20:19

Original: https://bbs.hcbbs.com/thread-1925382-1-1.html

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