tender for extension of pipeline work at pammam w.s.s padavadi to nesarajapuram in unnamalaikadai town panchayat.; 1 supply and delivery of following pvc / g.i pipes and specials 2 110mm hdpe pipes (pn 10) 3 110mm hdpe tee 4 110mm hdpe bend 5 100mm kinetic air valve 6 100mm g.i nipple 7 dismantling c.c road cutting including all charges etc. complete. 8 earth work excavation and depositing on bank with initial lead of 2 metre narrow trenches for laying of pipes and refilling earth for water supply works in the hard stiff clay stiff black cotton hard red earth shales murram gravel stoney earth and earth mixed with small size boulders and hard gravelly soil as directed by the departmental officers. 9 lowering hdpe pipes and specials to trench and laying to proper grade and alignment, jointing with pvc couplers with cement paste. 10 100mm hdpe pipes (pn 10) 11 jointing hdpe pipes and specials by butt fusion welding / electro fusion welding joints using fusion equipment as per iso 21307-2011 and as per is 7634 (part-2): 2012 including cost of hire charges for butt fusion equipment power supply arrangements etc. complete as per directed by twad board officers.