The Australian came into the final round at Black Mountain Golf Club six shots ahead of Swanagarunporn but was a shot behind with five holes to play as the Thai fired a brilliant course record 63 to get to 17 under.
A birdie on the 14th put Hend back into a share of top spot, and when he took advantage of the driveable 17th for the fourth time this week, that was enough to secure a 68 and a second European Tour title by a single shot.
“There are so many great players out here on the Asian Tour and obviously the European Tour as well so it was no surprise the guys came after me,” said Hend.
“But for Piya to shoot 63 today was an amazing round of golf and he must have played extremely well all day. He set the score and the target and then I had to just try and keep making birdies to try and catch him. I learned from last year when I pushed too hard on the 17th here and lost my chance to win. So this year I knew I had to be patient and let the golf course come to me.
“The two three woods I hit on the 18th were among the best three woods I have hit. Once I was on the green I knew that I just had to three putt somehow for the win. I hit a great drive on 17 and two putted for birdie which gave me the edge.
“This is a great win and I would love to try and kick on now and get another win, try and qualify for the Open and also try and get into the match play and see if I can do anything against the top 50 in the world.”
The win for Hend means 2016 is the first season in the history of The European Tour to have five different Australian winners and makes it two winners from Down Under in a row following Adam Scott's triumph at the World Golf Championships - Cadillac Championship.
Hend could move into the top 80 in the Official World Golf Ranking after his win, while Belgium's Thomas Pieters, who fired a closing 68 to finish third on 15 under and a shot clear of American Peter Uihlein, collected enough world ranking points to secure his place in the WGC – Dell Match Play Championships in two weeks’ time.
The European Tour now moves to New Delhi in India for the Hero Indian Open.
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