tender for item (i) fabrication and supply of 1 in 8.5 diamond crossing (without slip) b.g. (1673 mm) for 60kg(uic) to rdso drg. no.t-6492 (as amended upto date)and irs specification t-10-2000 (as amended uptodate), with cms acute crossings to rdso drgno.t-4967 (as amended upto date) & cms obtuse crossings tordso drg. no.t-6495 (as amended upto date) and with all parts listed in the sub-assembly drawings butexcluding standard fish plate, fish bolts, erc & insulating liners / metal liners .