BIS ISI Certification for PVC-U, Waste & Rainwater Pipes (IS 13592) BIS ISI Certification for PVC-U pipe is the benchmark in India for ensuring this quality. Manufacturers must be certified by this standard, IS 13592, to be able to produce and supply unplasticized Polyvinyl Chloride (PVC-U) pipes for soil and waste discharge systems. https://umspcs.in/blog/bis-isi-certification-for-pvc-u-waste-rainwater-pipes-is-13592/ BISISICertificationforPVCU,#BISISICertificationforPVUPipe,#BISISICertificationforPVCUPipes,#BISISICertificationforPVCPipes,#BISISICertificationforPVCUWasteandRainwaterPipes,#ISICertificationforPVC,#ISICertificationforPVCPipes,#ISICertification,#BISISICertification,#BISISICertificate,