Astm A234ʻO ka kiko'ī maʻamau no ka piʻiʻana o ka pipe ceel a me ka lawelawe kiʻekiʻe. Ua hanaʻiaʻo Carbon Foel i nā Fitters Pipe me Asmt A234 i ka hana maʻamau ma keʻano he nui e like me ka asme b16.9 a asme b16.49. ʻElua mau carbon colde chedes ʻO ka A234 WPB But-Welling Ppex, nā mea e pau, e hoʻihoʻi, nā mea hana e hoʻopau, nā mea hana i nā wāwae, nā mea hana a me nā huiʻana.
Ma hope o ka hoʻokumuʻana i ka mahana kiʻekiʻe, e hoʻomaʻemaʻeʻia nā kī i lalo o ka mahana e pale i ka palau maikaʻi, akā naʻe iʻoi aku ka wikiwiki o kaʻawaʻawa eʻoi aku ka wikiwiki. ʻO nā wela wela wela i kuhikuhiʻia he metala ('āpana) mahana. E mālamaʻia nā mea hana wela wela e like me ka paukū 7 ma ka kiko'ī A960 \ / A960M.