Supply Of Axle Box Housing With Fully Welded Horn Face And Side Liner For Wap-1 And Wap-4 Locomotive As Per Nei Drg. No:x-122 Or Fag. Drg. No:901-26-102.and Spring Seat Collar Height To Be Maintained 17mm As Per Rdso M.s.mp.mod.vi.01.03.05.rev:00each Piece Should Be Embossed/engraved With Drawing Number.