Running Contract for Manufacture & Supply of 6. 2 mm thick Composite Grooved Rubber Sole Plate as per RDSO Drg. No. T- 6618 for 60 kg ( UIC ) Rails and conforming to IRS specifications for CGRSP for placing beneath Rails, Serial No. T- 55- 2023 with latest Alt. & Spn. Note: Latest alteration/ corrigendum wherever used will mean the alterations/ corrigendum up to the actual date of closing tender for which no additional payment shall be made )