tender for 1)fabrication and supply of 1in 8.5 diamond crossing without slip bg for 60 kg rails [uic] on pscsleepers lay out to rdso drg. no. t-6492/latest alteration cms acute crossing to rdso drg. no. t-4967/latestalteration, cms obtuse crossing to rdso drg. no. t-6495/latest alteration and with all parts listed in the subassembly drawings but excluding standard fish plate, fish bolts, elastic rail clip and insulating liners/metalliners.