Pa Novembara 9, bungwe la American Iron and Steel Association lidalengeza kuti mu Seputembala 2021, zotumiza zazitsulo zaku US zidakwana matani 8.085 miliyoni, kuwonjezeka kwachaka ndi 21.3% ndi kutsika kwa mwezi ndi mwezi ndi 3.8%.
Kuyambira Januwale mpaka Seputembala, kutumiza zitsulo ku US kunali matani 70.739 miliyoni, kuwonjezeka kwa chaka ndi 17.0%.
Kuphatikiza apo, kuyambira Januware mpaka Seputembala, zonyamula zonyamula ku United States zolimbana ndi dzimbiri zidakwera ndi 19% pachaka, zonyamula zoziziritsa kuzizira zidakwera ndi 17% pachaka ndi chaka, ndipo zonyamula zowotcha zidakwera ndi 12%. chaka ndi chaka