Tenders for Supply of Two Way Dirt Collector For Branch Pipe To Rdso Drg. No. Sk. 97005 Sheet N O 1. Alt. No 2. Material And Specification To Rdso Specn No. 02-Abr-02 Amendment No. 3 Of April-2010, Appendix-E. This Item Is Reserved For Procurement From Rdso Approve D Sources Only. Warranty Period: 30 Months After The Date Of Delivery