tender for repairing cleaning of chocked sewer line and manhole cover for type-i and type-iv (block no. 1 to 6) at new prikalp vihar colony at telibagh, lucknow. - cleaning of chocked sewer line by diesel running vehicle mounting hydraulic operated high pressure suction cum jetting sewer cleaning machine fitted with pump having 4000 litres suction capacity and 6000 litres water jetting tank capacity including skilled operator, supervising engineer etc. for cleaning and partial desilting of manholes and dechocking of sewer lines. dechocking and flushing of sewer line from one manhole to another by high pressure jetting system of 2200 psi for sewer line from 150mm dia upto 300mm 2 providing and fixing in position pre-cast r.c.c. manhole cover and frame of required shape and approved quality 3 rectangular shape 600x450 mm internaldimensions 4 square shape 450 mm internal dimensions