Tender For manufacture and supply of portions for fusion welding of 60kg/60e1 (r260 grade) rail and 60 kg (90uts) rail with 25mm gap by alumino thermit process using compressed air petrol system/oxy l pg/ oxy propane pre-heating with 3 piece prefabricated mould (zircon washed) manually pressed/core shooted with auto tapping thimble and single shot crucible with latest alterations. applicable rdso speci fication is irs t-19-2021 rev.7.0, applicable str (schedule of technical requirement) is tdg0017, ver 4. 0, list of required consumables as per annexure - a. (the alteration in drawing, schedule of technical re quirement (str) and specifications issued by rdso up to one day prior to tender opening date shall be a pplicable to this tender). ]