It was an impressive performance by a man who had announced his retirement earlier in 2014.
Northern Districts won the match by 33 runs according to the Duckworth-Lewis method of recalculation after limiting the Cobras to 44 for two in in 7.2 overs.
Earlier, Districts smashed 206 for five, courtesy of a 49-ball 101 scored by Kane Wiliamson. The New Zealand top-order batsman hit eight fours and five sixes at the Shaheed Veer Narayan Singh International Stadium in Raipur.
The Cobras will meet the Hurricanes in their second Group B-match at Hyderabad on Sunday.
On Friday, even the destructive Wiliamson found it difficult to dispatch Langeveldt in the final overs. The impressive swing bowler bowled yorkers consistently.
The fuller length did not allow Wiliamson and Company many boundary options while Langeveldt was operating with class and monotonous accuracy in his final two overs.
What also impressed the TV-analysts was his variety. He had Scott Styris caught behind for a duck off a menacing bouncer.
Earlier, BJ Watling succumbed to a delivery by Langeveldt that was almost on a yorker length.
Langeveldt bowled eleven dot balls in his 24 deliveries, a testimony to his skill and his consummate professionalism against the belligerent Wiliamson and Anton Devcich.
Vernon Philander bowled with greater accuracy and control in his last spell. He nipped out one for 39 in four overs and managed eight dot balls.
The former prison warder Langeveldt is known for his ability to swing the ball late and to restrict batsman in the high octane death overs.
On Friday, the rest of the attack struggled to contain Williamson and Devcich, who added 140 runs in 13.4 overs for the first wicket.
But Langeveldt showed he has lost very little of the expertise that made him an asset to the South African team in 72 One Day Internationals and six tests.
With this performance, he just might be one of the first names on the team sheet for the rest of the campaign.