TN No 15 2025 26 SDO Dated 06.01.2026

Supply and delivery of following sizes of MS pipes - Spiral / Longitudidal welding as per IS 3589 /2001 with Internal Lining ( CML internal 6mm to 12 mm thick ) and External Coating (CMC external 20mm thick ) made with FE 410 and as amended from time to time with ISI marking including cost, loading, unloading freight, delivery and stacking at site of work and excluding GST etc as directed by the TWAD Board officers SOR 2025-26 /VOL II / Pg No.61 )1118x 8.8mm MS pipe ( CML internal 6mm to 12mm Tk & CMC external 20mm Tk and transporting charges)

Supply and delivery of DI D/F butterfly valves with GGG 40 or equivalent grade as per IS 3896 (part 2) 1985 and subsequent revisions double eccentrically disc with renewable soft seal on the disc and body seat face of stainless steel / Nickel weld overlay micro finished with powder or liquid epoxy coating with minimum thickness of 250 microns applied on both body and disc inside and outside face to face dimensions as per AWWA C 504 or BS 5155 or IS 13095 PN 16 including labour charges for loading, unloading and stacking at site etc and as directed by Twad Board Officers (SOR 2025-26 /VOL II / Pg No.79 ) 1110 mm DI D/F BUTTERFLY Valve in 1100mm ms pipe ( PN 16 )

Supply and delivery of DI D/F gate valves for Isolation ( soft seated) resilient seated soft sealing gate valves (sluice valves) with body bonnet of ducktile cast iron of grade GGG 40 or equivalent grade wedge fully rubber lined with EDPM , replaceable spindled nut , without gland packing and with 3 O- ring protection on the shaft and seals of NBR and the valves should be of vaccum tight and 100 % leak proof with face to face dimensions as per EPR BS 5163 - 89/ISI 14846 - 2000/ DIN 3202 F 4 . All the valves shoud be with electro static powder coating both inside and outside with pocket less straight thor" body passage. All the valves are to be compatible for burried application with pressure rating PN 10/16 including labour charges for loading, unloading and stacking at site etc and as directed by Twad Board Officers.(SOR 2025-26 /VOL II / Pg No.78) 200 mm Isolation valve in 1118 mm MS pipe )

Manufacture, Supply and Delivery of Tamper proof DI single chamber air release valves with pressure range from PN 1.0 to 2.5 with body and cover made of Ductile Iron of Grade GGG 40 or equivalent grade conforming to IS 1865 with Food Grade Epoxy Powder coating(EP-P) inside and for outside of colour blue RAL 5005. All internal parts such as float, shell etc., cover bolts, made of Austenitic alloy steel of SS AISI 304/316. The float shall be made of Polytetrafluroethylene/ Austenitic alloy steel of AISI 304/316. Gaskets and seals of EPDM / Neoprene rubber. The cost includes basic rate, freight, transportation, stacking, etc., as directed by TWAD Board officers. (SOR 2025-26 /VOL II / Pg No.78 )200 mm Airvalves in 1118 mm MS Pipe

Earthwork excavating and depositing on bank with an initial lead of 10 metres and initial lift of 2 metres in Sand, silt or other loose soil, wet sand or silt not under water, light black cotton soil, sandy loam and ordinary soil including excavated earth SS 20 B for 1118x 8.8mm MS pipe

Lowering MS pipes and specials in the trenches and laying to proper grade and alignment and as directed by the TWAD Officers (SOR 2025-26 /VOL II / Pg No.183 ) for 1118x 8.8mm MS pipe

Jointing os MS pipes with butt joint using machine welding at on site in pipe line laying works including hire charges for portable GEN stes , welding unit, labour cost etc. completed as directed by twad board officers. 1118x 8.8mm MS pipe

Testing of PVC Pipes with Hydraulic testing equipMent by filling with water (including cost of water at Rs 60 /Kl) and testing to recoMMended pressure in convenient stetches and attending the burst if any occoured during the test , excluding the cost of pipes ,including other incidental and operational charges etc coMplete and as directed By TWAD Board officers ( SOR 2025-26 /VOL II / Pg No.194 ) for 1118x 8.8mm MS pipe

Provision for THRUST BLOCKS along the mains 1100 x 90 degree

1100 x 45 degree

Interconnection the existing PSC pipes with proposed MS pipes using socket / spigot machine ends of siutable size by using rubber rings and caulking the joints using hemp yarn and cement including all charges etc. complete including dewatering and welding etc for 1118x 8.8mm MS pipe

Removing the Existing PSC pipes from the pipe line and removal of slushy soil and baling out water and replacing the pipe line with new pipe including jointing and cost of refilling the pipe line with water for retesting the pipe line etc., complete. (including cost of earth work) and as directed by the TWAD Board Officers ( SOR 2025-26 /VOL II / Pg No.201 ) for 1100mm Psc pipe

Construction of the following Sluice valve pit as per type design No 2 / CE / P&D madras with brick work in CM 1:5 (One cement and five sand ) using country Bricks, plastering with CM 1:3 (One cement and three sand )12mm thick, providing RCC 1:1 1/2:3( One cement , one and half sand and three coarse aggregate) Cover slab including cost of steel, fabrication charges moulding charges including earth work excavation in all types of soils, levelling course in CC 1:4:8 (One cement , two sand and four coarse aggregate), cut stone in set CM 1:3 (One cement and three sand )and refilling with excavated earth around the pit and labour charges for fixing sluice valve & flow control valve(where ever provide) ,laying and jointing of all auxiliary pipes and specials, fixing surface box and including cost of jointing materials such as MS Bolts, Nuts, MS washers and rubber insertion sheets etc. complete and as directed by the TWAD Board Officers for 1118x 8.8mm MS pipe

Construction of the following Air valve pits as per Type Design No. 10/91 - 13 / CE (P&D) madras for single Air valve and as per Type Design No SAN TD 9/1943 for Double Air valve with brickwall in CM 1:5 (one cement and five sand) using country bricks over a bed of C.C.1:4:8 (one cement four sandand eight course aggregate); plastering with cement mortor 1:3 (One cement and three sand) 12mm thick; providing RCC 1:11/2:3 (one cement, one and half sand and three aggregate) cover slab including cost of steel fabrication charges,moulding charges,laying and jointing of all anxiliary pipes and fixing Surface box, refilling with earth around the pit and also including cost of the following jointing materials such as bolts,nuts M.S washers and rubber insertion sheet etc complete complete as directed by TWAD Board Officers for 1118 x 8.8 mm MS pipie

Refilling with excavated Earth

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