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 D