Bpq-Kzj, Kzj-Ki, Wd-Sc &Amp Sc-Kzj Sections: Welding Of Rail Joints 60Kg/52Kg By Means Of Mobile Flash Butt Welding Plant In Situ At Various Locations Under Sr.Den/North/ Sc, Sr.Den/West/Sc &Amp Den/Central/Sc Sections In Connection With Complete Track Renewal (S) &Amp Through Rail Renewal (S) Work.