supply of manufacturing and supply of cms crossing for bg 52 kg(uic) on psc sleepers 1 in 8.5 to rdso drg. no. t-4867.manufacturing and supply of cms crossing for bg 52 kg(uic) on psc sleepers 1 in 8.5 to rdso drg. no. t-4867.,rate contract for manufacturing and supply of cms crossing for bg 52 kg(uic) on psc sleepers 1 in 8.5 to rdso drg. no. t-4867, alt.8/ latest alteration and spn. irs-t-29-(revised-2022) for cms crossing and drawings complete with c.i. distance blocks, packing pieces, m.s.tapered washers, check blocks and bolts of different sizes as listed in the drawing excluding other items indicated in the drawing. (n.b.: term-latest- wherever used will mean the alteration/amendments up to the date of ten der notice).(hsn code-73023000) specification: irs-t-29- (revised-2022) specification: irs-t-29-(revised-2022)