Tender For bid to ras corrigendum : supply of metal tube rotameter with flow range: 63 to 630 lph as per specification enclosed , metal tube rotameter with flow range: 630 to 6300 lph as per specification enclosed , metal tube rotameter with flow range: 1000 to 10000 lph as per specification enclosed , metal tube rotameter with flow range: 2500 to 25000 lph as per specification enclosed