Mumbai, Sept 6 (Reporter) The BSE Sensex on Friday tanked 600 pts at 81,600 in opening trade as selling was seen across the board. The National Stock Exchange (NSE) declined 199.10 pts at 24,946. The BSE sensex registered intra day high and low at 82,254.79 and 81,543 pts respectively. The NSE registered days high and low at 25,168.75 and 24,941.70 pts respectively. The Mid Cap fell 1.20 pc and Small Cap by 0.74 pc. In 30 scrips, 6 advanced while 24 declined. The losers were SBI by 2.52 pc to Rs 798, Reliance industries by 1.49 pc to Rs 2942.75, Ultracemco by 1.36 pc to Rs 11380.70, HCL Technology by 1.30 pc to Rs 1767 and Tata Motors by 1.24 pc to Rs 1055.35. The gainers were Bajaj Finance by 1.34 pc to Rs 7340.10, Bajaj Finserv by 0.30 pc to Rs 1870, Hind Unilever by 0.28 pc to Rs 2844.30 and Sun Pharma by 0.20 pc to Rs 1828.35...////...