That website also said - "You will not be able to obtain a Triple entry visa in Asia"
"Remember the visa will expire in 90 days from the date of issue - so the last entry must be made before 90 days from the date of issue. So if you get a visa and use it the next day for 60 days and extend 30 - there goes 90 days. Finished."
Not correct. The website Dave mentioned is correct. I don't know where he wants to get his visa or whether a triple entry is the best solution. But the question was: with a triple entry can I stay for 6030+60+30+6030 and that is possible.
How long does a triple entry visa show for an expiry date? If it is still 90 days it is logical that I am correct. (I have never got more than a single entry visa for myself.) Also the website mentioned shows a 30 day visa extention being followed by a second 7 days one - this is news to me - I am not saying it is wrong; just I have never heard of it.
Paul
Don't know about those 7 days as well, but do know the answer to the posed question: 'is 6030+60+30+6030 possible on a triple entry visa?' is 'yes, possible.
@1068 yes it is possible minus one day. A triple entry (like a double entry) has a validity of 180 days. yes I know some consulates/embassies like Vientiane only issue double entry with 90 days validity, but they are the exceptions. So you enter on your first entry (hopefully on date of issue), stay 60 days extension, leave and re-enter for 60 days + extension, at which time your validity has passed (enter before). So in fact you need to do the border run one day earlier, for another 60 days extension.
6030+60+29+6030=269 days.theoretically you could extend the last entry with seven days, but the chance of a firm no is pretty big.
The chance to obtain a triple entry somewhere in asia is pretty slim, Europe in comparison, dead easy. Of course, obtaining one in Europe leads to the inability to get those 269 days, due to the travel time and time difference, but if planned right, 268 days should be possible.

I'm living in Istanbul Turkey and Thai embassy here is issuing triple visas for $120 and double visas for $80.

davelliot,
What is the difference of non immigrant visa and how can I get it? Is it like a working or student kind of visa? Thanks.

Someone else can handle that non immigrant visa question.
As for the 7 days , it wouldn't be worth it anyway to pay 1900 baht for the 7 days .