tender for providing 160 mm dia hdpe pipe line at reddykuppam in vikravandi town panchayat.2025-2026 , earth work excavation for 160 mm hdpe pipe and depositing on bank with initiallead of 10 m and lift of 2 m in narrow trenches for layingof pipes for water supply and sewerage works in thefollowing type of soils as directed by departmentalofficers such as hard stiff clay, stiff black cotton, hard red earth, shales,murram gravel, stoney earth and earth mixed with smallsize boulders and hard gravelly soil.one cubicmetre excluding refilling , supplying and delivery of 160 mm dia pn 10 hdpe pipe includind all cost of materials and other chrges etc complete complying with standard specifications , lowering hdpe pipes and specials to trench and laying to proper grade and alignment, jointing with pvc couplers with cement paste , 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 bytwad board officers. , refilling with excavated soil including all labour chrges etc complete complying with standard specifications , supply and delivery of 80 mm dia di single air release valve- specification as per p68 of sor.is marking suitable for use in water supply main including, loading, freight, unloading and stocking at site and all the incidental charges etc ., complete and as directed by twad board officers. , supply and delivery of specials required for fixing the air valve 150mm x80mm dia/f tee , 50 mm gi pipe , 160 mm hdpe stubend / flanged , 50 mm gi elbow , ms bolt & nut jointing including cost of material, bolts, nuts, ri shuts etc., 150mm d/f joint , 80 mm d/f joint , testing of hdpe pipes for water supply with hydraulic testing equipment by filling with water and testing to recommended pressure in convenient stretches and attending the bursts if any