Bhavesh Kattimani (52kg), Aman Sherawat (70kg), Vinit Dahiya (75kg), Akshay Siwach (60kg), Siddharth Malik (48kg) and Satender Rawat (80kg) won their respective bouts to enter the medal rounds.
Aman opened the proceedings for India and defeated Kyrgyzstan's Baibek Anarbek in a unanimous verdict.
Vinit defeated Jordan's Rashed Swaisut, while Akshay got the better of Thailand's Sumatas Ontong.
Siddharth had no trouble going past Korea's Seo Donggeun and Bhavesh defeated Mongolia's Enkhtur Tegshjargal.
In 80kg category, Satender sailed past Korea's Woon Hyun Kim 5-0 to enter the semifinal.