procurement of cs valves and ci nrvs on rc basis for a period of 2 years t use at all areas of sccl through tender cum reverse auction-reg. 1. cs sluice valve 150mm class 150, 2. cs sluice valve 200mm class 150, 3. cs sluice valve 150mm, class 300, 4. cs sluice valve 200mm, class 300, 5. cs nrv w bypass arngmt 150 mm class 150, 6. cs nrv w bypass arngmt 200mm class 150, 7. cs nrv w bypass arngmnt, 200mm, class300, 8. cs nrv w bypass arngmnt, 150mm, class300, 9. cs nrv with strainer 150mm class 150, 10. cs nrv with strainer 200mm class 150, 11. ci nrv with strainer 150mm, pn 1.6, 12. ci nrv with strainer 200mm, pn 1.6, 13. ci nrv with strainer 250mm, pn 1.6,