ʻO ka paipu hao ductile he ʻano paipu hao.ʻO nā koi maikaʻi o ka hoʻoheheʻe ʻia ʻana o ka pae spheroidization no ka 1-3 (spheroidization rate "80%), no laila ua hoʻomaikaʻi maikaʻi ʻia nā waiwai mechanical o ka mea ponoʻī, me ke ʻano o ka hao, ka hana kila.ʻO Annealed ductile hao paipu, ʻo kona ʻano metallographic he ferrite a me kahi liʻiliʻi o ka pearlite, nā waiwai mechanical maikaʻi, kūpaʻa maikaʻi i ka corrosion, ductility maikaʻi, hopena sealing maikaʻi, maʻalahi e hoʻokomo, hoʻohana nui ʻia no ka lako wai, ʻoihana a me nā ʻoihana mining, gas, aila a pela aku.
Hoʻokaʻawale ʻia kekahi nui o ka graphite spherical ma ka matrix ferrite a me ka pearlite.E like me nā koi o ka nominal diameter a me ka elongation, ʻokoʻa ka hapa o ka ferrite a me ka pearlite i ka matrix.ʻAʻole ʻoi aku ka nui o ka pearlite ma ke anawaena liʻiliʻi ma mua o 20%, a ʻo ka nui o ke anawaena e hoʻomalu ʻia ma kahi o 25%.
Loaʻa iā ia ke ʻano o ka hao, ka hana o ke kila, ka hana anticorrosion maikaʻi loa, ka ductility maikaʻi, ka hopena sealing maikaʻi, maʻalahi e hoʻokomo, hoʻohana nui ʻia no ka lako wai, ʻoihana a me nā ʻoihana mining, gas, aila a pēlā aku.ʻO ia ka koho mua o ka paipu wai, me ka hana kiʻekiʻe.Ke hoʻohālikelike ʻia me ka paipu PE, mai ka manawa hoʻokomo, ʻoi aku ka maʻalahi a me ka wikiwiki o ka hoʻokomo ʻana o ka paipu inika spherical ma mua o ka paipu PE, a ʻoi aku ka maikaʻi o ke kaomi kūloko a me waho ma hope o ke kau ʻana;Mai ka ea a me ka anticorrosive wahi o ka nānā 'ana, ma hope o ka hoʻokomo 'ana o ka spherical inika paipu airtight ua oi aku ka maikai, akā, ma o ka like 'ole o ka anticorrosive mea e hoʻomaikaʻi i ka corrosion kū'ē;Ma ke ʻano o ka hana hydraulic, ʻo nā kikoʻī o ka paipu inika spheroidal e pili ana i ke anawaena o loko, a ʻo nā kikoʻī o ka paipu PE e pili maʻamau i ke anawaena o waho, no ka mea, ma lalo o nā kikoʻī like, hiki i ka spheroidal ink tube ke hoʻokō i ka holo nui;Mai ka hoʻokomo piha ʻana a me ka mālama ʻana i ke kumukūʻai o ka nānā ʻana, ʻoi aku ka maikaʻi o ka hana ʻoi aku ka maikaʻi o ka pahu ink spheroidal.ʻO ka pā ʻana o ka pā i loko o ka zinc, nā mea hoʻoheheʻe ʻia i ka pahu sima.