 SÃO PAULO, Nov. 16, 2020 PRNewswire -- Gerdau S.A. Bovespa: GGBR, NYSE: GGB, Latibex: XGGB Gerdau or the Company today announced the commencement of an offer to purchase for cash the Tender Offer up to a maximum amount of U.S. 230,000,000 the Aggregate Maximum Tender... 