Tube Investment Standalone September 2018 Net Sales at Rs 1,369.67 crore, up 16.54% Q-o-Qhttps://www.moneycontrol.com/news/business/earnings/tube-investment-standalone-september-2018-net-sales-at-rs-1369-67-crore-up-16-54-q-o-q-3124271.html#TIINDIA