kdhm / 61 / ww / 19-20 / 3rd call supply of d . i . pipe , supply and delivery at site isi mark socket and spigot jointing system centrifugally cast di ( k9 / k7 ) pipes conforming to is 8329-2000 ( third revision ) in standard length 4 m , 5 m , 5 . 50 m , 6 m for push-on joint ( rubber gasket ) with internal cement mortar lining and external protection by metallic zinc coating with finish layer of epoxy / bituminous 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 including free supply of polyethylene sleeves for water supply projects . , 150 mm . dia pipe ( k7 )