supply of at welding portion for 60 kg r260 grade with gap 25 mm, manufacture and supply of welding portions for fusion welding of 60kg / 60e1 ( r-260 grade ) rails by alumino thermic process with nominal gap of 25 mm using cap / oxy lpg / oxy propane preheating with 3 piece mould ( zr-washed ) manually pressed / core shooted with auto tapping thimble & single shot crucible.applicable rdso specification is irs t-19-2021 rev.7.0, applicable schedule of technical requirement ( str ) is tdg0017, ver 4.0, list of required consumables as per annexure - a ) ( the alteration in drawing, schedule of technical requirement ( str ) and specifications issued by rdso up to one month prior to tender opening date shall be applicable to this tender ) . [ warranty period: 30 months after the date of delivery ] e2 - mumbai bhandup , cr maharashtra 1733.00 numbers