supply and delivery at site isi mark socket and spigot jointing system centrifugally cast di (class - k9) pipes - 2nd call supply and delivery at site isi mark socket and spigot jointing system centrifugally cast di (class - k9) pipes conforming to is 8329-2000 (third revision) in standard 5.50 m, for push-on joint (rubber gasket) , supply and delivery at site isi mark socket and spigot jointing system centrifugally cast di (class – k9) pipes conforming to is 8329-2000 (third revision) in standard length 5.50 m for push-on joint (rubber gasket) with internal cement mortar lining and external protection by metallic zinc coating with finish layer of epoxy coating of outside as per is: 8329-2000 specification with necessary jointing material rubber gasket (is: 5382:1985) including transportation, loading unloading and stacking at site at contai municipality including free supply of polyethylene sleeves for water supply projects within contai municipality. , 1) 250 mm dia d.i.(class - k9) pipe , 2) 150 mm dia d.i.(class - k9) pipe