mark-ii supply of different tube-well materials and accessories for installation of mark-ii tube well at sukdevpur, basuriya, chaloon, ashokgram g.p. area under gangarampur panchayat samity under badp 2020-21. , supply and delivary of pvc thread pipe for shinking of mark-ii tube well conforming to astmd 1785 minimum duty to match with g.i pipe as per is:1239 part-i. i ) 100 mm dia ( m ) bansal utkash. , ii ) 100 mm dia ( m ) a1 , iii ) 40 mm dia ( m ) bansal utkash. , iii ) 40 mm dia ( m ) ai , supplying high density polythene ( hdpe ) strainer of approved make with adapter conforming to i.s. specifications. i ) 40 mm dia 3mtr. long.