The No 1 duo defeated Japanese rivals Ito Yuya and Takahashi Yusuke, the No 3 seed, 6-3, 6-4 in a semi-final match.
Theywill meet another pair from Japan, Fukuda Sora and Tokuda Renta, in thefinal on April 17. The Japanese beat their fellow-countrymen Naoto Kaiand Yosuke Watanuki 6-3, 6-2 in another semi.
In the singles category, No 1 Nam earned his berth in the semi-finals after easily beating Ito Yuya 6-3, 6-0.
His last rival will be No 3 seed Watanuki Yosuke of Japan.
Nam set a target of two titles at this tournament which ends on April 18.-VNA