ðɪ ˈaɪɚn pˈaɪp sˈaɪz stˈændɚd kˈeɪm ˌɪntʊ bˌiːɪŋ ˈɜːli ɪnðə nˈaɪntiːnθ sˈɛntʃɚɹi ænd ɹᵻmˈeɪnd ɪn ɪfˈɛkt ʌntˈɪl ˈæftɚ wˈɜːld wˈɔːɹ ɹˌoʊmən tˈuː.
The iron pipe size standard came into being early in the 19th century and remained in effect until after World War II.