Tenders for Supply of Cut Off Angle Cock With Vent For Air Brake Wagons To Rdso Drg. No.-Wd-88123-S-01, Alt-2 Or Latest And Details Of Part To Drg. No.-Wd-88123-S-02, Alt-6 Or Latest, Other Requirements Confirming To Str No.- 02- Abr-02 With Amendment No- 4 Of Sep-2016. With Appendix-D Or Latest Amendments.