All Centrifugally cast (Spun) iron spigot and socket soil, waste, ventilating and rainwater pipes, fittings and accessories has been included in the mandatory ISI Certification Scheme under IS standard - IS 3989. This product cannot be exported/imported or sold in Indian consumer market without ISI Mark imprinted. We provide complete ISI Certification consultancy services for your product from start to end, during which assist you in all types of documentation formalities and we take care of all liaison with BIS Office in India.