Eastern Railways - West Bengal
40774906 procurement of joint less silver bearing grooved copper contract wire 107 sq. mm. etc., jointless silver bearing grooved copper contact wire 107 sq. mm. for electric traction ( drawn out of continuous cast silver bearing copper wire rods ) as per rdso spec. no. ti / spc / ohe / cw ( cu ag ) / 0130 ( 02 / 2020 ) rev 1....