July 9 (Reuters) - Saudi Aramco has mandated banks for 10-, 30- and 40-year senior unsecured tranche debt sales, a document from one of the arranging banks showed on Tuesday.

The banks will arrange investor calls commencing on Tuesday for the potential sale of benchmark-sized notes, according to the document.

Citi, Goldman Sachs International, HSBC, J.P. Morgan, Morgan Stanley and SNB Capital have been appointed as joint active bookrunners. (Reporting by Amna Mariyam; Editing by Tom Hogue)