Tender For bid to ras corrigendum : supply of chlorinated polyvinyl chloride (cpvc) pipes for potable hot and cold water distribution supplies (v2) as per is 15778 (q3) , commercial ppr pipes fittings as per is 15801 (q4) , elbow pipe fitting (q4) , copper alloy gate valve for waterworks purpose as per is 778 (q3) , cpvc industrial pipe (q3)