ISTANBUL (Dow Jones)--Turkish Prime Minister Recep Tayyip Erdogan and China Premier Wen Jiabao said Friday their two countries would from now on trade using their own currencies, effectively excluding the U.S. dollar.

The two leaders also pledged to triple trade between China and Turkey to $50 billion within five years, and to $100 billion by 2020, speaking at a joint news conference in Ankara that marked the final stop of Mr. Wen's European tour.

"We are forming an economic strategic partnership ... In all of our relations, we have agreed to use the lira and yuan," Mr. Erdogan said.