The Adelaide 36ers have motored into the NBL finals after belting the Brisbane Bullets 105-82.

Dominant from quarter-time onwards, the Sixers powered to their third-consecutive victory and guaranteed the Bullets their second-straight wooden spoon.

Majok Deng (20 points, including 13-of-14 free throws) and Mitch Creek (16 points) led Adelaide's scorers.

Import Travis Trice (20 points) was Brisbane's best yet again as they were hammered 51-34 on the boards.

Adelaide absorbed some early Trice jabs to hold sway 30-28 at the end of a frenetic opening term, which comprised 11 lead changes, four deadlocks and minimal defence.

From then on it was a rout.

The 36ers re-engaged defensively in the second stanza and sparked a 13-0 burst.

Deng scored Adelaide's last eight points of the half including a high-flying alley-oop from Adam Doyle's feed in the dying seconds to stretch the home side's advantage to 59-40.

Brisbane descended into a complete rabble in the third as the margin blew out to 30 points before they suddenly firing an 11-0 flurry against the flow.

The Sixers hit back emphatically, moving ahead 79-56 at three-quarter-time on Deng's steal and acrobatic slam before cruising to victory.

The second-placed 36ers, who will play either Perth or New Zealand in the semi-finals, soured the farewell party of retiring Bullets forward Anthony Petrie.

He fouled out with eight points and a team-high seven rebounds in his 268th and final NBL game; 120 of them were for Adelaide.

36ers coach Joey Wright felt the match was played on his team's terms, virtually from start to finish.

"I thought we committed to our style of play on offence and defence," he said.

"I thought we did a great job in transition. We covered our bases and did it for four quarters."

Bullets coach Andrej Lemanis believed his side went away from their half-court strengths and were hurried into playing into the Sixers' hands.

"We played at a tempo that suited Adelaide," he said.

"The start of the second half was abysmal. We got overrun in some effort areas."