How to determine whether a pipeline has undergone low-temperature impact testing
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Hello everyone, I’ve run into a problem recently and need your help to figure it out: The pipes in question are made of A333 Gr6 material, with a design temperature of -45°C. According to ASME B31.3 for normal operating conditions, is it necessary to conduct low-temperature impact tests on the welds? The base material should not need to be treated according to the standards. What are the regulations specified in the national standard GB? Which standard?
Reference can be made to NB/T 47014-2011 \"Welding Procedure Qualification for Pressure Equipment\"
A333 GR6 is itself a low-temperature alloy capable of withstanding temperatures as low as -45 degrees Celsius, but welding presents a different challenge; it is necessary to conduct process evaluations for welding in order to verify its weldability. It is recommended to conduct low-temperature impact tests on the welds and heat-affected zones in accordance with domestic standards. Ensure the reliability of operations.
Thank you, yes, I am considering the low-temperature impact test for the welds
GBT20801.2 Materials