The Warriors took down the Bulls by 23 runs and in doing so qualified for their fourth grand final appearance since the competition changed to the Twenty20 format back in 2012-13, bringing powerhouse Bulls' title defence to an end in the process.

They'll be gunning for their second title in March 8's decider, largely thanks to Shaun Grenfell and Dave Boundy both smashing blistering half-tons to set up Friday night's relatively comfortable victory.

The pair combined in a 142-run opening stand with Boundy smashing 75 from 50 balls and Grenfell belting an unbeaten 70 from 57, as the Warriors posted a formidable 2-165.

The Bulls had a number of bats make inroads but none went on with their starts as Orange City marquee Stu Naden tightened the screws, eventually finishing with 3-10 from four overs and helping restrict the reigning champions to just 8-142.

Orange City skipper Ed Morrish, leading the side in a big game for the first time on Friday night, was naturally stoked, but said he hopes his troops keep a lid on their excitement to a degree.

After all, the job's not done yet.

"It was a great win and probably as close to a complete performance as I've been a part of in this format," Morrish said.

"Shaun and Dave did exactly what we needed them to, we wanted them to get us off to a flyer. They did and that really set it up, then the bowlers finished the job.

"Pom (Naden) did a great job, but so did the rest of the bowlers as well and we were good in the field.

"But since we won it [in 2012-13] we've lost two of them so once we know who we're playing, we'll stay focused because none of us are happy just being in the grand final."

The Warriors will play the winner of Cavaliers and St Pat's Old Boys in the decider although Morrish has no preference to which side his plays, even though they have already beaten the latter this summer.

"No, not at all, it won't worry us who we play, you have to win the game regardless so it's not important," Morrish said.

The half century was Boundy's second of the 2018-19 tournament following his swashbuckling, unbeaten 91 in the opening round against Centrals.

It's also catapulted him to the top of the competition's run-scoring stakes and considering the pressure it came under, right into Carl Sharpe Medal contention too.

He's now belted 193 runs from four digs at a whopping average of 64.33 to sit more than 50 runs in front of his nearest rival, St Pat's Old Boys' Nic Broes.

Boundy's largely played in Orange District Cricket Association's second grade competition this summer, but Morrish said the former Western Zone quick's effort so far in the shortest format proves he's "still got it".

"He's been great for us at the top of the order, he's always been a pretty destructive bat and when he gets going he can seriously do some damage, like we've seen this season," Morrish said.

Cavaliers and St Pat's Old Boys face off in the second semi-final on Friday, March 1.