Displaying Latest 9 Non Metallic Pipes Tenders in India. PVC Pipes Tenders are covered in this Category. Register to receive Best in Class Non Metallic Pipe Tender alerts. Under the Non Metallic Pipes tender category, the following types of tenders are also included: Concrete pipes, GRE pipes, polyvinyl chloride pipes, PVC pipes, HDPE pipes, conduit pipes, flexible pipes and glassfibre reinforced plastic pipes