Tender For manufacture and supply of pre-stressed mono block concrete sleeper (sets) (pre-tensioned type) for 1 in 8.5 b.g. (1673 mm) 60 e1 turnout with 6400 mm 60e1a1 thick web switch (curved) with r260/r350ht grade rail for 25t axle load with weldable cms crossing as per rdso drg. no. rdso/t-9841,alt.-01/latest alterations and to irs specifications no. t-45 (4th revision-march-2021) and indian railway standard conditions of contract, both as amended upto actual tender opening date duly loaded in wagon/road vehicle. [ warranty period: 60 months after the date of delivery ]