DUBAI, June 8 (Reuters) - Abu Dhabi state investor Mubadala said on Tuesday it has joined a consortium led by U.S.-based EIG Global Energy Partners that had agreed to buy a 49% equity stake in Aramco Oil Pipelines Co. Aramco in April agreed to sell a minority stake in its pipelines for $12.4 billion to a consortium led by EIG, the company’s largest deal since its record $29.4 billion initial public offering in late 2019. Aramco will keep 51% of the newly formed Aramco Oil Pipelines Co and rights to 25 years of tariff payments for oil carried on Aramco’s pipelines. (Reporting by Saeed Azhar; Editing by Jan Harvey) Our Standards: The Thomson Reuters Trust Principles.