
But Suchanan Viratprasert, the last Thai in the women's singles, could not emulate the three local men, falling to Indonesian ninth-seeded Sandy Gumulya 2-6 6-1 2-6 in the quarter-finals.
The top seed Danai made a quick work to eliminate South Korean Nam Hyun-woo 6-0 6-3 in the final eight round which clocked just 48 minutes. He is to take on Taiwanese third-seeded Chen Ti, a 6-2 6-3 winner over Frenchman Gregoire Burquier
As expected, top pair Sonchat and Sanchai stormed into the final, wrapping their semi-final match against Indonesian long-time foes Prima Simpatiaji and Sunu Wahyu Trijati of Indonesia 6-0 6-3 in just 45 minutes.
"Normally they played better than this. They didn't seem to put up a fight that much today,'' said Sanchai, a senior laws student from Sripatum University.
The twins never seemed to have much trouble against the Indonesian pair except at the early stage of the second set. But they allowed the opponents to take only two games before managing a double break to finish them off.
Waiting for them in the final are Russian second-seeded Pavel Chekhov and Alexander Rasnorutskiy, who moved past South Korea's An Jae-sung and Kim Sun-yong 6-4 6-2.
"We've never played them but we know that they hit big and return well. But we are confident and are playing at the top form now,'' said Sonchat who won the bronze with his brother in the 2005 Games in Izmir.
Lerpong Amsa-ngiam
The Nation