procurement of miscellaneous hardware items for maintenance of tube-wells under ae ( enm ) iii :-1 supply-of bore-cover plate of size: 200 mm dia, made out from 6 mm thick m.s.-sheet in 2-halves and a circular-hole of 50 mm dia in center with locking arrangement by nuts & bolts. hsn code:-7307 2 supply-of m.s. clamp of 600 mm length, duly fabricated out-of 12.5 mm thick, 50 mm wide m.s.plate for holding the pipe of 50 mm dia. hsn code:-7307 3 supply-of g.i. bend 90o x 50 mm dia, having flange at both-ends. hsn code:-7307 4 supply-of g.i. pipe 50mm dia, medium-class, each of 3±3 meters long, duly threaded on both-ends, welded & fitted with g.i. / m.s. flange of minimum thickness 6 mm on both ends with a slot for submersible-cable. welding of m.s strips at both ends on flange. make of pipe: jindal / tata. hsn code:-7308 5 supply-of tail-piece of medium-class g.i.-pipe 500 mm long with one-end threaded, as per out-let of pump and another-end flanged, as per size of g.i. pipe 50 mm dia. make of pipe: jindal / tata. hsn code:-7307 6 supply-of orifice-assembly 50mm dia, 0.6 meter long, double-flange. hsn code:-7307