supply of manufacture and supply of 10125mm 1 in 12 thick web switches as per rdso drg. no t6155 ( with latest alterations ) and with zu-1-60 / 60e1a1 thick web grade 880 class a tongue rails and uic r-260 / 60kg grade-880, class a / class b stock rails with elastic fasteners and spring operated setting device ( rdso-t / 6216 with latest alterations ) , complete with all fittings for 1 in12, bg 60kg turnout for fan shaped layout on psc sleepers i.e all fittings for switch portion as per sub- assembly no. t-6155 ( with latest alterations ) excluding standard fish plates, fish bolts and nuts, e.r clips, liners. this is a safety item. latest alterations will mean the latest alteration issued by rdso as on date of closing of this e tender [ warranty period: 30 months after the date of delivery ]