Construction of 02 nos bore of size 750 mm x 550 mm bore 220 mtr deep and lowering of 450 mm x 250 mm dia size tube well assembly thickness 10 mm under iffco phulpur

1)1.25 mm tk x 527 mm wide cold rolled carbon steel coil to material spec no. aa-10115 rev 09 ( is: 513 grade d ).tolerance on width is strictly within /-1 mm. the inner i/d of coil should be 470 mm to 515mm. material test certificates covering all the mechanical and chemical properties strictly as per specification shall be furnished along with supply. each coil weight should be 3 to 4.5 mt. qty: 1000 mt