Providing, Sinking and Development of Deep Tube Well with Submersible Pump Set including allied works at Malda Collectorate building, Malda under Malda Division, PWD.

Labour for boring through any type of soil for sinking tube well of required dia. with top enlargement by rig boring system (either by reserve circulation or by direct rotary method) including hire charges and labour for rig machine, tools and plants, staging, force pumping set and making arrangement for water required for boring etc. complete and lowering of pipes, strainers, blind pipes etc. complete. (b) For depth upto 250 metre for 150 mm dia. Tube well with top enlargement of 250 mm dia.(upto 50 metre). First 50 metre

Next 50 metre

Next 50 metre

Supply of PVC pipes & fittings Schedule 80 (medium duty) conforming to ASTMD - 1785 and threaded to match with GI Pipes as per IS : 1239 (Part - I). (A) PVC Pipes (Dia) 100 mm

150 mm

Supplying PVC strainer of approved make with adapter conforming to I.S.12818 specifications. (iv) 100 mm dia.

Supplying, fitting and fixing heavy type bell mouth reducing socket. (iii) 100 mm X 150 mm

Providing and fixing bell plug as required upto 250 mm (internal) dia. ERWMS pipe including cost of materials and labour complete.

Providing 200 mm centre guide. i) With Clamp

Supplying, fitting and fixing G.I. cap at top (ii) 150 mm