Ka la 31 Tšitoe, 2021, tšepe ea tšepe ea 9Ni ea mocheso o tlase haholo bakeng sa litanka tsa polokelo tsa LNG (gase ea tlhaho e qhibilihisitsoeng) e hlahisoang ke Hyundai Steel e ile ea fetisa setifikeiti sa tlhahlobo ea boleng ba KOGAS (Korea Natural Gas Corporation).Botenya ba poleiti ea tšepe ea 9Ni ke 6 mm ho isa ho 45 mm, 'me bophara bo boholo ke limithara tse 4,5, eo hona joale e leng bophara ka ho fetisisa lefatšeng.Kamohelo ea setifikeiti sena e boetse e ntlafatsa tlholisano ea 'maraka oa Hyundai Steel naheng ea Korea Boroa.
Ho tlalehoa hore e le ho fetisa setifikeiti sena, Hyundai Steel le moetsi oa thepa ea ho tjheseletsa Hyundai General Metal Co., Ltd. ba sebelisana 'moho ho hlokomela ho kenngoa ha thepa eohle ea tjheseletsa.Hyundai Steel e boletse hore ts'ebeliso ea lisebelisoa tsa welding ea lehae e ka boloka chelete e ka bang 30% ha e bapisoa le ts'ebeliso ea thepa e tsoang kantle ho naha.
9Ni steel thick plate ke sehlahisoa sa poleiti e teteaneng e sebetsang ka ho fetesisa e sebelisoang ho netefatsa polokeho ea litanka tsa polokelo ea LNG ea metsing le ea fatše.Likarolo tsa eona tsa mantlha ke litaba tse phahameng tsa nickel le bohloeki bo phahameng.Ho boloka matla a phahameng le matla a matla a tšusumetso, ke e 'ngoe ea lisebelisoa tsa mantlha tse sebelisoang ho etsa litanka tse kholo tsa polokelo ea LNG.