Public Health Engineering Department Tender

Fabrication, providing, handling, laying, installation, testing and commissioning of 450mm Nominal Diameter 10 mm thick HSAW ISI-mark Mild Steel Pipes for connecting the delivery lines from Two No Discharge Elbows with the common header as per the technical specifications as under: S. No Details Requirement 1. Nominal Diameter = 450 mm 2. Thickness = 10 mm 3. Length of the pipe = Pipe shall be in single random length from 4 to 7 meter as per Clause 12.4 of IS 3589 4. Type of welding = HSAW 5. Quality of MS plate to be used for manufacture = As per IS 2062 6. Pipe to be manufactured = As per IS 3589 having one longitudinal joint with latest amendments (Grade-Fe410) 7. Hydraulic test pressure = As per 10.1 of IS 3589 8. Working pressure = PN 25 9. End preparation = As per 17.1 of IS 3589 where V-groove is to be made by machine-grinding edges of the pipe 10. Type of welding to be used for joining pipes = DC arc welding 11. Tolerances = As per clause 12.3 of IS:3589 Installation of the pipe includes carrying of these pipes from manufacturing place to the site of installation which involves loading/ unloading at respective sites. External surface of pipes to be painted with two coats of steel primer and black bituminous paint in two coats. The mild steel pipe line shall be laid as per contour/ layout plan defined by the department “Under Ground/Above Ground” on saddle blocks as per site requirement. The laying of pipes shall be carried out as per IS:5800. Pipes are to be welded circumferentially end to end in 2-3 runs in addition to the root filling of the V-grooves using high quality welding electrodes and making the joints absolutely leak proof. Any excessive welding material is to be grinded for even finish. The welding joints thus formed shall withstand the working pressure. The bends/ offsets wherever necessary shall be fabricated by the contractor out of the supplied pipe within quoted price. All tools and tackles like tripod stand, lifting/ pulling machines, welding machine, electrical generator etc. required for handling/ laying/ joining any other activity for completion of job shall have to be arranged by the firm.

P/F of 450 mm dia, 46 mm thick MS Flanges with fasteners having thickness of flange and dimensions of fasteners as per the Table 23 of IS-6392, in the 450 mm dia delivery lines to ensure smooth and trouble-free connection with the common header as per the requirements of the site.

P/F of 450 mm dia, 46 mm thick MS Blind Flanges without fasteners having thickness of flange as per the Table 23 of IS-6392 in the 450 mm dia delivery lines to ensure isolation by way of sealing the common header as per the requirements of the site.

Fabrication, providing, handling, laying, installation, testing and commissioning of 400mm Nominal Diameter 10 mm thick ERW ISI-mark Mild Steel Pipes for connecting the delivery lines from Two No Discharge Elbows with the common header as per the technical specifications as under: S. No Details Requirement 1. Nominal Diameter = 400 mm 2. Thickness = 10 mm 3. Length of the pipe = Pipe shall be in single random length from 4 to 7 meter as per Clause 12.4 of IS 3589 4. Type of welding = ERW 5. Quality of MS plate to be used for manufacture = As per IS 2062 6. Pipe to be manufactured = As per IS 3589 having one longitudinal joint with latest amendments (Grade-Fe410) 7. Hydraulic test pressure = As per 10.1 of IS 3589 8. Working pressure = PN 25 9. End preparation = As per 17.1 of IS 3589 where V-groove is to be made by machine-grinding edges of the pipe 10. Type of welding to be used for joining pipes = DC arc welding 11. Tolerances = As per clause 12.3 of IS:3589 Installation of the pipe includes carrying of these pipes from manufacturing place to the site of installation which involves loading/ unloading at respective sites. External surface of pipes to be painted with two coats of steel primer and black bituminous paint in two coats. The mild steel pipe line shall be laid as per contour/ layout plan defined by the department “Under Ground/Above Ground” on saddle blocks as per site requirement. The laying of pipes shall be carried out as per IS:5800. Pipes are to be welded circumferentially end to end in 2-3 runs in addition to the root filling of the V-grooves using high quality welding electrodes and making the joints absolutely leak proof. Any excessive welding material is to be grinded for even finish. The welding joints thus formed shall withstand the working pressure. The bends/ offsets wherever necessary shall be fabricated by the contractor out of the supplied pipe within quoted price. All tools and tackles like tripod stand, lifting/ pulling machines, welding machine, electrical generator etc. required for handling/ laying/ joining any other activity for completion of job shall have to be arranged by the firm.

Installation of available departmental 400 mm dia Control Valves (NRVs & GVs --- 01 each in the individual delivery line) by way of P/F of 400 mm dia, 46 mm thick MS Flanges (04 No in each line) with fasteners having thickness of flange and dimensions of fasteners as per the Table 23 of IS-6392 in the 400 mm dia delivery lines.

P/F of 400 mm dia, 46 mm thick MS Flanges with fasteners having thickness of flange and dimensions of fasteners as per the Table 23 of IS-6392 in the 400 mm dia delivery lines to ensure smooth and trouble-free connection with the common header as per the requirements of the site.

P/F of 400 mm dia, 46 mm thick MS Blind Flanges without fasteners having thickness of flange as per the Table 23 of IS-6392 in the 400 mm dia delivery lines to ensure isolation by way of sealing the common header as per the requirements of the site.

Supply installation testing and commissioning of Resilient Slant Seated Swing Type Reflux Valve 450 mm dia PN 25 for delivery line of 13.5 cusec pumping unit. The valve shall be manufactured as per the prevalent applicable IS Code/ International Standards (BS/EN). Besides 02 No MS flanges with fasteners having thickness of flange and dimensions of fasteners as per Table 23 of IS 6392. The PCD and dia of holes shall be compatible with the flange of the control valve. Material of construction: - Body: Ductile Iron (GGG-50/40) Bonnet: Ductile Iron (GGG-50/40) Disc: Ductile Iron (GGG-50/40) and epoxy coated with EPDM/NBR vulcanized Plug: Brass Surface Protection: Electro Static Epoxy Powder Coating.

Supply installation, testing and commissioning of DN 450, PN 25 Resilient Seated Sluice valve. The valve shall be manufactured as per the prevalent applicable IS Code/ International Standards (BS/EN). Besides 02 No MS flanges with fasteners having thickness of flange and dimensions of fasteners as per Table 23 of IS 6392. The PCD and dia of holes shall be compatible with the flange of the control valve. Material of construction: - a) Body, Bonnet : Ductile iron (GGG-50/40) b) Wedge : Ductile iron (GGG-50/40), EPDM Encapsulated c) Spindle/Stem : SS as per AISI 420 d) Stem nut : Copper Alloy e) Bonnet Gasket : EPDM rubber f) Mode of Operation: Hand Wheel

Fitting, handling, laying in trenches, installation, testing and commissioning of Departmentally provided 800 mm Nominal Diameter 12 mm thick HSAW ISI-mark Mild Steel Pipe as Common Header for connecting the delivery lines from individual 450 mm & 400 mm Dia delivery pipes of Five no VT pumps as per the technical specifications/Drawings and as per site requirement as under: S. No Details Requirement 1. Nominal Diameter = 800 mm 2. Thickness = 12 mm 3. Length of the pipe = 20M 4. Working pressure = PN 25 5. End preparation = As per 17.1 of IS 3589 where V-groove is to be made by machine-grinding edges of the pipe 6. Type of welding to be used for joining pipes = DC arc welding Installation of the pipe includes carrying of these pipes to the site of installation which involves loading/ unloading at respective sites. External surface of pipes to be painted with two coats of steel primer and black bituminous paint in two coats. The mild steel pipe line shall be laid as per contour/ layout plan defined by the department “Under Ground with thrust Blocks” to be facilitated by Civil counterparts as per site requirement. The whole portion of the pipe is underground including excavation [facilitated by Civil counterparts] of the earth in trenches. The laying of pipes shall be carried out as per IS: 5800. Pipes are to be welded circumferentially end to end in 2-3 runs in addition to the root filling of the V-grooves using high quality welding electrodes and making the joints absolutely leak proof. Any excessive welding material is to be grinded for even finish. The welding joints thus formed shall withstand the working pressure. The bends/ offsets/increaser/reducer, wherever necessary shall be fabricated by the contractor out of the supplied pipe within quoted price. All tools and tackles like tripod stand, hydra crane lifting/ pulling machines, welding machine, electrical generator etc. required for handling/ laying/ joining any other activity for completion of job shall have to be arranged by the firm.

Fabrication, providing, handling, Installation and successful commissioning of flanged End Cap for pipe of ND 800 mm, 64 mm thick as per table 17 of IS-6392, P/F 800 mm ND, 64 mm thick MS Flange as per Table 17 of IS-6392 to the 800 mm ND Pipe including gaskets, nuts, bolts and washers to be fitted on Common Header.

Supply installation, testing and commissioning of DN 150, PN 16 Air Release Valve, ISI marked, conforming to IS 14845/BS-1074-4/EN Standards for 800 mm ND Common Header with following specifications: Material of construction: - a) Body, Bonnet : Ductile iron b) Float : Polyethylene/Stainless Steel c) O-Rings : NBR/EPDM d) Washers & Bolts: Galvanized steel/SS The job also includes providing and fitting of RI cloth/rubber washer, fasteners vertical 150 mm Dia MS tail piece of 600 mm in length arrangement of MS flanges of 18 mm thickness adaptable with above valve on one side heaving thickness as per IS code, and then testing of same on full load.

Providing, fabrication erecting and commissioning of M.S. Dismantling joint as per requirement and Department's approved drawing and specifications, including machining and rubber rings and suitable for 25 kg/cm2 working pressure with required flanges of suitable size with nut bolts etc complete. The joint should have through long bolts so that during normal working pressure there should be no sliding movement of sliding flanges. L.O.F. (length over flange) should not be less than 75% of dia. • Diameter of = 450 MM • Material of Body =MS • Threaded bolts: = MS • Flanges = MS • Pressure rating = 25 kg/cm² Specification of Matching Flanges, Gaskets, Nuts bolts: Dia.: 450MM and shall conform as per IS-6392. SS nuts, bolts as per IS-1364-2002 and washers/Gaskets as per IS-638/79:

Providing, fabrication erecting and commissioning of M.S. Dismantling joint as per requirement and Department's approved drawing and specifications, including machining and rubber rings and suitable for 25 kg/cm2 working pressure with required flanges of suitable size with nut bolts etc complete. The joint should have through long bolts so that during normal working pressure there should be no sliding movement of sliding flanges. L.O.F. (length over flange) should not be less than 75% of dia. • Diameter of = 400 MM • Material of Body =MS • Threaded bolts: = MS • Flanges = MS • Pressure rating = 25 kg/cm² Specification of Matching Flanges, Gaskets, Nuts bolts for Dia.: 400MM and shall conform as per IS-6392. SS nuts, bolts as per IS-1364-2002 and washers/Gaskets as per IS-638/79.