* Steel prices rise after two-day fall, iron ore at 2-week top
* Production cuts due to pollution seen tightening supply
* Slowing Chinese growth likely to limit gains in steel futures (Updates prices)
By Naveen Thukral
SINGAPORE, July 18 (Reuters) - Shanghai construction steel rebar futures ticked higher on Wednesday after two days of losses, as pollution control measures in China's top steelmaking city raised concerns over supplies, underpinning prices.
The most-active rebar contract on the Shanghai Futures Exchange SRBcv1 closed up 0.4 percent at 3,940 yuan ($587.26) a tonne.
Tangshan has extended recent emergency pollution control measures until July 21 because of a possible major smog alert, according to a document seen by Reuters and a source familiar with the matter. stocks are expected to be lower because of the reduction in output. Prices are on the higher side as supply remains tight," said Cao Ying, analyst at SDIC Essence Futures.
The market has faced pressure over the last two session as data showed slowing growth in China's economy and as the trade spat with the United States continues to intensify. economy expanded at a slower pace in the second quarter as Beijing's efforts to contain debt hurt activity, while a slowing property market also clouded the outlook for steel demand. raw materials also gained ground.
Iron ore on the Dalian Commodity Exchange DCIOcv1 finished up 0.3 percent at 465.5 yuan a tonne after climbing earlier in the session to 469 yuan a tonne, the highest since July 2.
Coke DCJcv1 rose 0.2 percent to 2,000.5 yuan a tonne. Coking coal DJMcv1 closed unchanged at 1,140 yuan a tonne.
Anglo-Australian miner BHP Billiton (LON:BLT) Ltd BHP.AX said iron ore production in its fiscal fourth quarter rose 3 percent as productivity improved, cementing a record annual output as it set a bigger target for the current year. world's biggest miner's iron ore output rose to 72 million tonnes during the three months through June, compared with 70 million tonnes a year ago.
"Both Rio Tinto (LON:RIO) and Vale reported output that exceeded market estimates, raising concerns that the market will suffer from a surge in exports in coming quarters," ANZ said in a note.
($1 = 6.7091 Chinese yuan)