Pa Disembala 31, 2021, chitsulo chotsika kwambiri cha 9Ni chitsulo chosungiramo matanki osungira a LNG (gasi wamadzimadzi) opangidwa ndi Hyundai Steel adadutsa chiphaso choyendera bwino cha KOGAS (Korea Natural Gas Corporation).Makulidwe a mbale yachitsulo ya 9Ni ndi 6 mm mpaka 45 mm, ndipo m'lifupi mwake ndi mamita 4.5, omwe panopa ndi ochuluka kwambiri padziko lonse lapansi.Kuvomerezedwa kwa chiphasochi kumapangitsanso mpikisano wamsika wa Hyundai Steel ku South Korea.
Akuti podutsa chiphaso ichi, Hyundai Zitsulo ndi kuwotcherera zinthu wopanga Hyundai General Metal Co., Ltd. anagwirizana kuzindikira kumasulira kwa zipangizo zonse kuwotcherera.Hyundai Steel adati kuyika kwa zida zowotcherera kumatha kupulumutsa pafupifupi 30% ya mtengo wake poyerekeza ndi kugwiritsa ntchito zinthu zomwe zatumizidwa kunja.
9Ni steel thick plate ndi chida chokwera kwambiri chomwe chimagwiritsidwa ntchito kuonetsetsa chitetezo cha akasinja osungira a LNG apanyanja ndi pamtunda.Zinthu zake zazikulu ndizomwe zili ndi faifi tambala komanso kuyera kwambiri.Kusunga mphamvu zambiri komanso kulimba kwamphamvu, ndi chimodzi mwazinthu zazikulu zomwe zimagwiritsidwa ntchito popanga akasinja akulu osungira a LNG.