He aha ka pae maʻamau o nā pahu hōʻoia-pahū

ʻO IIB a me IIC nā helu hoʻopaʻa pahū-hōʻoia i hoʻohana mau ʻia i nā hale hana.

Hoʻokaʻawale ʻia nā huahana pahū i ʻelua ʻano, dI a me dIIBT4:

Ua koho ʻia ʻo dI no nā wahi eli ʻole i loko o nā lua lanahu.
dIIBT4, hoʻohana ʻia i nā ʻōnaehana hana, kūpono no nā hui kinoea pahū i hoʻokaʻawale ʻia ma lalo o nā Papa IIA a me IIB, mai ka hui T1 a i ka T4. Hoʻopili kēia huahana i nā koi maʻamau JB/T8528-1997. Hoʻohālikelike nā hiʻohiʻona pahū-hōʻoia i ka maʻamau GB3836.1-2000 a me ka maʻamau JB/T8529-1997..