UPDATE 1-RLPC-KazMunaiGas launches $2.5 bln loan - source

(Adds details of bank meetings and participcation levels)

LONDON, June 9 (Reuters) - Kazakhstan oil and gas company KazMunaiGas [KMG.UL] has launched syndication of a $2.5 billion, three-year unsecured loan, a banking source said.

The deal pays a margin of 155 basis points (bps) over LIBOR, the source added.

Bank presentations on the loan will be held in London on June 18 and in Hong Kong on June 20.

Lenders are invited to commit $200 million for which they will receive an upfront fee of 100 bps, $100 million for 85 bps, $50 million for 70 bps, or $25 million for 60 bps.

Mandated lead arrangers are ABN AMRO, Bank of Tokyo-Mitsubishi-UFJ, Barclays, Credit Suisse, Deutsche Bank, SMBC, Societe Generale and WestLB.

Proceeds will refinance the company's $3.1 billion, one-year unsecured bridge loan that signed in January.

That unsecured loan paid a margin of 90 bps over LIBOR and was used to fund the borrower's purchase of Romania's second-largest oil company Rompetrol. (Reporting by Christopher Mangham; Editing by David Holmes)