All Ductile iron fittings for pressure pipes for water, gas and sewage are categorized under IS 9523. All models and brands that meets IS 9523 standards are required to get ISI Certification before its launch or import to the Indian consumer market. ISI Certificated will be issued to the manufacturer only (not to dealer/trader or distributor) whether manufacturer is in India or in abroad does not matter. Please refer Info section for more details.