hiring of scaffolding material for surface preparation work of absorber 6 at 2x490 mw ntpc fgd hiring of scaffolding material for surface preparation work for rubber lining of absorber-6 at 2x490 mw ntpc fgd dadri, uttar pradesh.-1 cup lock vertical ( standard ) - 3 mtr no. 450 2 cup lock vertical ( standard ) - 2 mtr no. 1200 3 cup lock vertical ( standard ) – 1.5 mtr no. 15 4 cup lock vertical ( standard ) – 1 mtr no. 15 5 ledger pipe:2 mtr no. 3135 6 ledger pipe:1.5 mtr no. 700 7 ledger pipe:1 mtr no. 550 8 6 mtr pipe for railing no. 210 9 special platform challi: 300x2000 mm no. 2150 10 sadha square pipe challi no. 270 11 base jack no. 150 12 joint pin no. 1200 13 coupler ( clamp )