Hoʻokumu ʻia ka paipu kila kila ma ka hana ʻana i nā ʻāpana kila ma ke ʻano o ka paipu a laila wili i ke humu. Hoʻohana ʻia nā kaʻina hana wela a me ke anuanu no ka hana ʻana i nā paipu stainless, me ke kaʻina anu e hana ana i kahi hoʻopau maʻalahi a ʻoi aku ka paʻa o ka hoʻomanawanui ma mua o ka hana wela. Hoʻokumu nā kaʻina ʻelua i kahi paipu kila kila e kūʻē i ka corrosion, nā hiʻohiʻona kiʻekiʻe a me ka lōʻihi.

Paipu kila kilahoʻomaʻemaʻe maʻalahi ʻia a hoʻomaʻemaʻe ʻia a hiki ke maʻalahi i ka welded, mīkini, a i ʻole ke kulou ʻana e hana i kahi ʻano curved. ʻO kēia hui pū ʻana o nā mea e hoʻolilo ai i ka paipu kila stainless i kahi koho maikaʻi loa no nā noi hoʻolālā, ʻoi aku ka nui o nā mea e ʻike ʻia ai nā paipu i nā wahi corrosive.

Ma Nowemapa 1, 2024, ua hoʻokumu ka US International Trade Commission (USITC) i ke kolu o ka napoʻo ʻana o ka lā i nā loiloi anti-dumping (AD) a me nā hana countervailing (CVD) ma nā paipu puʻupuʻu stainless steel welded mai Kina, a me ka loiloi lua o ka lā o AD. nā kuleana ma nā huahana like mai Malaysia, Thailand, a me Vietnam, e hoʻoholo ai i ka hoʻopau ʻana i nā kauoha AD a me CVD i kēia manawa e alakaʻi i ka hoʻomau a i ʻole ka hoʻi hou ʻana o nā mea. ʻeha i ka ʻoihana US i loko o kahi manawa kūpono i ʻike mua ʻia.

Ma ka lā 4 o Nowemapa, ua hoʻolaha ka US Department of Commerce (USDOC) i ka hoʻomaka ʻana o ke kolu o ka AD a me CVD hōʻike ʻana i ka napoʻo ʻana o ka lā i nā huahana kumuhana mai Kina, a me ka loiloi lua o ka lā AD ma nā huahana like mai Malaysia, Thailand, a me Vietnam.

Pono nā poʻe makemake e waiho i kā lākou pane i kēia leka me ka ʻike e pono ai ma ka lā palena ʻo Dekemaba 2, 2024, a ʻo nā manaʻo e pili ana i ka lawa o nā pane e waiho ʻia ma Ianuali 2, 2025.

300 moʻo papakila kohu ʻolehana ʻia i loko o nā huahana like ʻole me nā paipu kila, nā paipu kila, a me nā huahana ʻē aʻe. ʻO nā paipu kila 304 a me 316 he mau nickel-based alloys i maʻalahi ke mālama, pale i ka corrosion, a mālama i ka ikaika a me ka lōʻihi i nā wela kiʻekiʻe.

ʻO ka hoʻoholo ʻana i ke ʻano o ke kila ʻoi aku ka maikaʻi no kāu noi e pili ana i ka noi i manaʻo ʻia a me nā mea kūlohelohe e like me ka mahana a i ʻole ka ʻike ʻana i ka chloride.

• ʻO ke kila kila kila ʻano 304 he pale a maʻalahi hoʻi e hoʻomaʻemaʻe, ʻo ia ke ʻano maʻamau o ke kila kila i hoʻohana ʻia no ka paipu a me nā ʻāpana kila ʻē aʻe. Hoʻohana pinepine ʻia nā paipu kila kila 304 i ke kūkulu ʻana a me ka hoʻonani ʻana i nā noi.
• ʻO ke kila kila kila 316 ʻano like me ka 304 stainless no ka mea he pale-corrosion a maʻalahi hoʻi e hoʻomaʻemaʻe. Loaʻa i ka 316 stainless ka pōmaikaʻi liʻiliʻi no ka mea akā ʻoi aku ka pale ʻana i ka ʻino i hana ʻia e ka chloride, kemika, a me nā solvents. ʻO kēia kumu hou e hana ai i ka 316 stainless steel i mea hoʻonā makemake no nā noi kahi e ʻike mau ai i nā kemika a i ʻole no nā noi waho kahi e ʻike ai i ka paʻakai. ʻO nā ʻoihana i ʻike ʻia e hoʻohana i ka 316 stainless steel e pili ana i ka ʻoihana, ʻokiʻoki, a me ke kai.

paipu kila kila