DUBAI, Sept 8 (Reuters) - Abu Dhabi tightened the price guidance for dual-tranche U.S. dollar-denominated bonds after receiving more than $9.75 billion in orders for its second international bond sale of the year, a document showed on Wednesday. The emirate gave final price guidance of 65 basis points (bps) plus or minus 2 bps over U.S. Treasuries for a 10-year tranche and between 3% and 3.05% for 30-year notes, the document from one of the banks on the deal showed. Both tranches will price in range and the deal is expected to close later on Wednesday. The tranches were tightened from initial guidance of about 90 bps over Treasuries for the 10-year paper and around 130 bps over for the 30-year bonds. (Reporting by Yousef Saba; Editing by Catherine Evans) Our Standards: The Thomson Reuters Trust Principles.