Piping Standard

Which piping Standard shall be refered for pipe sizes greated than DN 2000 for checking the ovality, dent, thickness tolerance..etc., since API 5L Standard covers up to DN 2000. I know this is not the place to ask this question, but i require your suggestions.

AWWA covers large diameter fabricated pipe to some extent. Your size indicates that this will be a fabrication from plate. I also suggest you look at the PFI they may have some guidance as well.

thnx sir, the pipe size is 120 inch.