IS 4985 is an Indian Standard that specifies the requirements for unplasticized PVC (UPVC) pipes for potable water supplies, used in agriculture, irrigation, and water distribution systems. Any manufacturer producing or intending to sell such pipes in India must obtain BIS certification under IS 4985 to ensure compliance with safety, quality, and performance parameters as set by the B... https://www.agileregulatory.com/blogs/bis-certification-for-pvc-pipes-is-4985-2013