求翻译：并且在焊接完成后，要进行退火和正火的热处理，以使法兰件达到5ct N80的性能，这样就要求制造商了解这些材料的性能，同时具有热处理的能力。是什么意思？

After the completion of the weld annealing and normalizing heat treatment, so that the flange 5ct n80 performance, which requires manufacturers to understand the performance of these materials, but also has the ability to heat treatment.

正在翻译，请等待...

And completes after the welding, must carry on the annealing and the fire heat treatment, enables the flange to achieve 5ct N80 the performance, the such request manufacturer understood these materials the performance, simultaneously has the heat treatment ability.

And after the welding was completed, for annealing and normalizing of heat treatment, to improve performance on flanges up to 5ct the N80, which will request manufacturers to understand the performance of these materials, and has the ability to heat treatment.

正在翻译，请等待...