supply of manufacture and supply of combination portions for fusion welding.manufacture and supply of combination portions for fusion welding.,manufacture and supply of combination portions for fusion welding of 60kg/60e1(r260 grad e) rail and 60 kg (90uts) rail with 25mm gap by alumino thermit process using compressed air petrol syst em/oxy lpg/ oxy propane pre-heating with 3 piece prefabricated mould (zircon washed) manually press ed/core shooted with auto tapping thimble and single shot crucible with latest alterations. (applicable rds o specification is |irs t-19-2021 rev.7.0),applicable str (schedule of technical requirement) tdgo017, v er 4.0, list of required consumables as per annexure.(the alteration in drawing, schedule of technical req uirement (str) and specification issued by rdso up to one day prior to tender opening date shall be applic able to this tender). [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]