Ke hele nei ka ʻoihana kila honua i kahi hoʻololi koʻikoʻi i alakaʻi ʻia e nā hoʻoponopono kālepa honua ʻoi aku ka ikaika a me ka piʻi nui ʻana o ka noi no nā mea kiʻekiʻe. Wahi a ka ʻikepili hou mai ka World Steel Association, ua manaʻo ʻia e ulu ka koi kila honua e 1.7% i 2024, a hiki i kahi kokoke i 1.8 biliona metric tons. Eia naʻe, ʻaʻole i puunaue like ʻia kēia ulu ʻana. ʻO nā mākeke e kū mai ana ma ʻApelika a me ka Hikina Waena ke hoʻokele nei i kahi ʻāpana nui o kēia koi, ʻoi loa no Paipu kila me ka PVOC Certification a EN Kūlana Kūlana Kūlana maʻamau nā huahana, i ka piʻi ʻana o nā papahana ʻoihana.

ʻO kahi mea hoʻokele mua o kēia neʻe ʻana ʻo ia nā koi hoʻokō koʻikoʻi i kau ʻia e ka lawe ʻana mai i nā lāhui. ʻO nā ʻāina e like me Zambia, Mozambique, a me Kenya ke kauoha nei i ka PVOC (Pre-Export Verification of Conformity) no nā mea kila a pau. Ua alakaʻi kēia i ka piʻi ʻana o ka noi no ʻO ke kila i hōʻoia ʻia ʻo PVOC no Zambia, Mozambique & Kenya. Ke hōʻike nui nei nā ʻoihana kūʻai honua ʻO ASTM A36 H Māhele Kūʻai Kūʻai a EN 10025 ʻO ke kila kila ʻōwili wela no nā papahana hana nui e hōʻoia i ka pono o ke kūkulu ʻana a me ka hoʻokō ʻana i nā kūlana palekana honua.

Mai kahi hiʻohiʻona analytical, hoʻomaka ka mākeke i ka lōʻihi ma mua o ke kumu kūʻai mua. I ke kahakai a me ka corrosive kaiapuni, ke koi no 3PE i uhi ʻia ʻo Anti-corrosion Spiral Steel Paipu ua hoʻonui ʻia e 22% i kēlā me kēia makahiki. Hōʻike ka ʻikepili ʻoihana e hoʻohana ana nā papahana ʻoihana i ka holomua Mea Hana Paipu Paipu Anti-corrosion ʻike nā ʻenehana i kahi hōʻemi 40% i nā kumukūʻai mālama lōʻihi. Ke oʻo nei ke kaulahao lako honua, hiki ke hāʻawi i nā huahana kila i hōʻoia ʻia, ikaika kiʻekiʻe, a me ka corrosion-e like me S355JR Mahele Hoʻolālā ikaika a ʻO ASTM A36 H Māhele Kūʻai Kūʻai-ʻo ia ka mea hoʻokaʻawale mua no nā mea hoʻolako honua. ʻO ka hope loa, ke neʻe nei ka mākeke honua i kahi kaiaola i hoʻokō ʻia, e hōʻoia ana i ke kālepa kila cross-border e kākoʻo i ka hoʻomohala ʻana a me ka hoʻomau.

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