Tender For corrigendum : rate contract for manufacture and supply of 6400 mm curved switch with zu-1- 60e1a1 thick web tongue rails for 1 in 8.5 turnouts bg for 60kg (uic)/ 60e1 rails on psc sleepers conforming to rdso drg. no. t-6280, alt-5 with all fittings as per drawing excluding standard fish plates, fish bolts and nuts, e.r clips, liners (as per annexure-a). specification: irs specification irs:t-10-2023. this is a safety item