Manufacture and supply of 1 in 8. 5 BG 60Kg Weldable CMS Crossing on PSC sleepers in accordance with RDSO ' s standard drawing No. T- 6441 ( Alt- 1 ) including supply of 6mm thick Nylon Cord Reinforced GRSP for 1 in 8. 5 BG 60Kg Weldable CMS Crossing