South Eastern Railway invites online e-tenders for two massive infrastructure projects on Engineering, Procurement, and Construction (EPC) mode. Tender 4627 (₹157.27 Cr) involves gauge conversion, civil works, and OHE electrification for the 3rd and 4th lines between Sini and Kandra Junction over a 24-month period. Tender 4628 (₹292.66 Cr) covers 3rd line construction, S&T, and OHE installation for the Chandil-Purulia section in Adra Division with a 36-month timeline. Pre-bid meetings will be held on June 15, 2026, and final electronic submissions close on July 23, 2026, at 12:00 PM on ireps.gov.in.