procurement of different type of ci pipes bends and couplings from bottom ash hoppers to ash slurry sump at ggsstp ropar , ci spun pipe with plain ends of size 200nb and confirming to is 1211 class d in the length of 5.3 mtr eachnote- alloy ci as per is 1211 class d in the length of 5.3 mtr each , 8”size 90°ni hard ci bendfor bottom ash disposal line of stage 2 as per sketch a and tech. specification as per annex.a note- alloy ci as per is 4771 type 1 ( a ) with min 4.5 % ni % hardness 500bhn min. , 8”size 45° ni hard ci bend for bottom ash disposal line of stage 2 as per sketch b and tech. specification as per annex. anote- alloy ci as per is 4771 type 1 ( a ) with min 4.5 % ni % hardness 500bhn min. , 10”size 90° ni hard ci bend for bottom ash disposal line and ash disposal line of stage 2 as per sketch c and tech. specification as per annex. anote- alloy ci as per is 4771 type 1 ( a ) with min 4.5 % ni % hardness 500bhn min. , 10”size 22.5° ni hard ci bend for bottom ash disposal line of stage 3 as per sketch d and tech. specification as per annex. anote- alloy ci as per is 4771 type 1 ( a ) with min 4.5 % ni % hardness 500bhn min.