supply of manufacture & supply of 10125 mm curved switches with zu-1-60 / 60 e1a1 thick web grade 880 class a tongue rails and 60e1, r-260 grade, class a/b prime quality stock rails with elastic fasteners and spring operated setting device (rdso drg. no. t-6216 read along with latest alterations) complete (with check rail) with all fittings for 1 in 12 turnout bg 60 kg for fan shaped layout on psc sleepers for switch portion as per sub assembly rdso drg. no. t-6155 alt.-12 (read along with latest alterations) in accordance with rdsos standard drawing no. t-6154 (read along with latest alterations) excluding standard fish plates, fish bolts and nuts, elastic rail clips & insulating liners. specification: i) irs - t - 10 -2023-for fabricated switches, ii) irs - t - 62 - 2022 - for end forging of thick web asymmetrical rails. note: - i) zu - 1- 60 / 60 e1a1 thick web grade 880 class a rails for tongue rail will be arranged by vendor at his own cost. rails for stock rails & check rails shall also be arranged by supplier at their own cost in terms of railway board letter no. 2022/track-i(p)/fabricators dated 24.01.2022 & dated 31.07.2023. ii) latest alterations will mean the latest alterations issued by rdso as on date of closing of this e-tender.manufacture & supply of 10125 mm curved switches with zu-1-60 / 60 e1a1 thick web grade 880 class a tongue rails and 60e1, r-260 grade, class a/b prime quality stock rails with elastic fasteners and spring operated setting device (rdso drg. no. t-6216 read along with latest alterations) complete (with check rail) with all fittings for 1 in 12 turnout bg 60 kg for fan shaped layout on psc sleepers for switch portion as per sub assembly rdso drg. no. t-6155 alt.-12 (read along with latest alterations) in accordance with rdsos standard drawing no. t-6154 (read along with latest alterations) excluding standard fish plates, fish bolts and nuts, elastic rail clips & insulating liners. specification: i) irs - t - 10 -2023-for fabricate