bids are invited for item_1 - supply of 250 nb (10 inch), sch 80, upvc pipe, manufactured as per astm d 1785 standard, schedule 40, plain end length 5 to 7 meter each. , item_2 - supply of 100 nb (4 inch), sch 80, upvc pipe, manufactured as per astm d 1785 standard, schedule 40, plain end length 5 to 7 meter each. , item_3 - supply of 80 nb (3 inch), sch 80, upvc pipe, manufactured as per astm d 1785 standard, schedule 40, plain end length 4 to 6 meter each. , item_4 - supply of 250 nb, 90 degree, upvc elbows, sch 80, solvent cement end connections (metric), manufactured as per astm d 2467. , item_5 - supply of 150 nb, 45 degree, upvc elbows, sch 80, solvent cement end connections (metric), manufactured as per astm d 2467. , item_6 - supply of 100 nb, 90 degree, upvc elbows, sch 80, solvent cement end connections (metric), manufactured as per astm d 2467. , item_7 - supply of 80 nb, 90 degree, upvc elbows, sch 80, solvent cement end connections (metric), manufactured as per astm d 2467. , item_8 - supply of 100 nb upvc couplings, sch 80, solvent cement end connections (metric), manufactured as per astm d 2467. , item_9 - supply of 80 nb upvc couplings, sch 80, solvent cement end connections (metric), manufactured as per astm d 2467. , item_10 - supply of 150 nb upvc vanstone flanges with stub end, class 150, solvent cement socket (metric), raised face, manufactured as per astm d 2467. , item_11 - supply of 100 nb upvc vanstone flanges with stub end, class 150, solvent cement socket (metric), raised face, manufactured as per astm d 2467. , item_12 - supply of 80 nb upvc vanstone flanges with stub end, class 150, solvent cement socket (metric), raised face, manufactured as per astm d 2467. , item_13 - supply of 250 nb x 150 nb, upvc unequal tee, sch 80, solvent cement end connections (metric), manufactured as per astm d 2467. , item_14 - supply of 100 nb, upvc equal tee, sch 80, solvent cement end connections (metric), manufactured as per astm d 2467. , item_15 - supp