find a reliable supplier is to ask for referrals from friends, family, or other businesses that have used their services in the past. This can give you an idea of the quality of their products and services, as well as their pricing. Once you have a list of potential water pipe manufacturers or suppliers in Delhi, it's important to compare their products and pricing. Look for companies that offer a wide range of products, including HDPE pipes, which are known for their durability and resistance to corrosion.