Technical rule [CURRENT]
NINETEENTH EDITION, OCTOBER 2019; API MONOGRAM PROGRAM EFFECTIVE DATE: OCTOBER 1, 2020; ADDENDUM 1, APRIL 2020; ADDENDUM 2, JUNE 2022 (API MONOGRAM PROGRAM EFFECTIVE DATE: DECEMBER 1, 2022); ERRATA 1, FEBRUARY 2024
NINETEENTH EDITION, OCTOBER 2019; API MONOGRAM PROGRAM EFFECTIVE DATE: OCTOBER 1, 2020; ADDENDUM 1, APRIL 2020; ADDENDUM 2, JUNE 2022 (API MONOGRAM PROGRAM EFFECTIVE DATE: DECEMBER 1, 2022); ERRATA 1, FEBRUARY 2024
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