Bis License for Prestressed Concrete Pipes BIS License as per IS 784:2019 for Prestressed Concrete Pipes. Products certified under the Bureau of Indian Standards Act, 2016 and rules made thereunder can be marked with the Standard Mark. This standard specifies the requirements for the manufacture, testing, and supply of prestressed concrete pipes used for water supply, drainage, and irrigation purposes. Pipes certified under IS 784:2019 must meet strict quality criteria, ensuring durability and strength. All prestressed concrete pipes intended for sale in the Indian market must bear the ISI Mark to be in compliance with the standard.