supply of manufacturing and supply of 1 in 12 cms crossing bg for 60 kg rails on psc sleepers layout to rdso drg. no.t-4220 alt-7 (latest alteration).manufacturing and supply of 1 in 12 cms crossing bg for 60 kg rails on psc sleepers layout to rdso drg. no.t-4220 alt-7 (latest alteration).,manufacturing and supply of 1 in 12 cms crossing bg for 60 kg rails on psc sleepers layo ut to rdso drg. no.t-4220 alt-7 (latest alteration) complete with all fittings as listed in the drawing exclu ding fish plates, fish bolts, g.r.pads, metal liner, gfn liner, elastic rail clips and check rails as per irs/t -29 (revised-2024) latest alteration) for cast manganese steel crossing complete with relevant specificati ons for all parts. excluding other items indicated in the drawing. [ warranty period: 30 months after the date of delivery ] ] , manufacturing and supply of 1 in 12 cms crossing bg for 60 kg rails on psc sleepers layo ut to rdso drg. no.t-4220 alt-7 (latest alteration) complete with all fittings as listed in the drawing exclu ding fish plates, fish bolts, g.r.pads, metal liner, gfn liner, elastic rail clips and check rails as per irs/t -29 (revised-2024) latest alteration) for cast manganese steel crossing complete with relevant specificati ons for all parts. [ warranty period: 30 months after the date of delivery ] ]