316L pipe is used at -24°C. Is it necessary to do a low-temperature impact test?
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There is an existing 316L pipe with a service temperature of -24°C. According to the relevant requirements of GB20801, when the use temperature is less than or equal to -20°C, a low-temperature impact test should be carried out. Therefore, according to GB20801, this pipe must be subjected to a low-temperature impact test; this regulation is different from GB150, which requires an impact test only when the temperature is lower than -196°C. Am I understanding it correctly?
Isn't this very clear? Those who meet abc can be exempted from doing it. The combination basically means that austenitic stainless steel in a solid solution state can avoid low-temperature impact above -196°C.
GB/T150.2 Article 3.7.2 When the service temperature of austenitic steel is higher than or equal to -196°C, the impact test is exempted. Generally, austenitic stainless steel does not require impact, and besides, your temperature is relatively high.
The construction standard of mine is GB20801, GB150 does not apply.
The comrade on the third floor quoted exactly GB/T20801
It seems to be similar :lol