BUZZ-Iron ore miners and steel producers: China futures up

** ArcelorMittal SA shares up 4.9 pct premarket, BHP Billiton Ltd shares up 3 pct, Rio Tinto Plc (LSE: RIO.L - news) shares up 3.9 pct, Vale SA shares up 2.2 pct

** Chinese steel and iron ore futures surged 4 percent to reach their upside limits on Monday as investors covered short positions on expectations prices may have hit bottom after sliding to record lows over the past two weeks

** China's iron ore imports rose 13 pct from August to 84.69 million tonnes in September, the second highest monthly volume on record, customs data showed