tender for supply and delivery of 100 / 150 / 200 / 250 / 300 / 350 mm dia di (k7) pipes at site isi mark socket and spigot jointing system centrifugally cast di (k7/k9) 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 synthetic resin/ 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 under maheshtala municipalty within ward nos. 1 to 35. , supply and delivery 100mm dia di (k7) at site isi mark socket and spigot jointing system centrifugally cast di (k7/k9) 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 synthetic resin/ 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. , supply and delivery 150mm dia di (k7) at site isi mark socket and spigot jointing system centrifugally cast di (k7/k9) 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 synthetic resin/ 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. , supply and delivery 200mm dia di (k7) at site isi mark socket and spigo