While Gangjee scored birdies on the first, third, 12th, 15th holes against a bogey on the par-five fifth, former Asian Tour champion Randhawa dropped two shots and birdied the third, sixth, 12th and 13th for a 68.
Other Indians in the fray, SSP Chawrasia scored one-over 72 to be joint 70th, while Khalin Joshi got a 74 to be tied 99th.
Gaganjeet Bhullar had a horrible start on the European Tour event as the Kapurthala golfer scored nine-over 80 to be tied 132nd.