tender for extention of pipe line at ward no : 8,9,10,11,12,13,14 and 15 in nangavalli town panchayat.; 1 earth work excavation and depositing on bank with inital lead of 10m and lift of 2m in narrow trenches for laying of pipes for water supply works in the type of soils and ordinary soil etc, complete as directed by deptl. officers. 2 supply and delivery of the following hdpe pipes.etc. including loading & unloading and conveyance charges and all taxes etc., complete.2 inch (63mm) hdpe (pn-6) 3 lowering hdpe pipes and specials to trench and laying to proper grade and alignment and as directed by the twad officers 4 refilling the excavated soil complying with standard specification for pipe laying works etc, complete