Tender For supply of modified transition screw coupling for centre buffer coupler for wdg4g and wdg6g locom otive as per para no. 2.5 of rdso specification no. mp.0.08.0074 rev-02 with amendment no. 1 of january -2016 and as per rdso drg.no. sk-dl-2494 & drg.no. sk.dl-3430. [ warranty period: 30 months after th e date of delivery ]