DUBAI - Oman has tightened price guidance for $500 million of bonds due in 2027 and 2032 that it is offering for sale in a tap of outstanding issues, and has received over $1.5 billion in combined orders, two sources said on Monday.

Oman tightened both tranches by 15 basis points, the sources said, after it gave initial price guidance of around 6.6% for the bonds due in 2027 and around 7.2% for the bonds due in 2032, according to a document from one of the banks arranging the deal, which is expected to close later on Monday.

Oman's finance ministry did not respond to a request for comment on the debt sale.

(Reporting by Yousef Saba; Editing by Catherine Evans) ((Yousef.Saba@thomsonreuters.com; +971562166204))