UPDATE 2-Enbridge second-quarter profit beats estimates, keeps FY21 outlook intact

(Compares with estimates, adds details on the result)

July 30 (Reuters) - Canadian pipeline operator Enbridge Inc on Friday beat market estimates for second-quarter profit, as the volumes transported on its Mainline system rose from a year-ago due to a rebound in fuel demand.

The beat reflects a steady recovery in Canada's oil and gas industry as it benefited from rising oil prices that encourages companies to bring back shut production and complete wells not hooked up to pipelines.

However, on a sequential basis Enbridge posted a drop in the volumes of fuel transported across Canada and the United States on its Mainline pipeline at 2.6 million barrels per day (bpd) of crude, from 2.75 million bpd in the first quarter.

But, the volumes in the second quarter were 7.5% higher than the year-ago quarter, when Enbridge transported 2.44 million bpd.

The company had earlier warned that scheduled maintenance for several oil sands upgraders and downstream refineries would be more concentrated between April and June than previously anticipated.

"In Liquids Pipelines, nominations for July were robust, which highlights the strength of the markets we serve and the demand for our system capacity", said Chief Executive Officer Al Monaco.

Enbridge expects full-year outlook of 2.8 million bpd on average for 2021 for its liquids pipeline.

Enbridge continues to expect full-year 2021 EBITDA and discounted cash flow to remain within its previously provided outlook of between C$13.9 billion and C$14.3 billion and $4.70 to $5.00 per share, respectively.

The Calgary-based reported adjusted earnings of C$1.36 billion ($1.09 billion), or 67 Canadian cents per share, in the second quarter ended June 30. This beat average analysts' estimate of 57 Canadian cents, according to Refinitiv IBES.

Rival TC Energy also beat estimates for quarterly profit on Thursday, as demand for its transport services returned with recovery in fuel prices. ($1 = 1.2438 Canadian dollars) (Reporting by Arunima Kumar in Bengaluru; Editing by Shailesh Kuber)