Rate Contract for Repairs renewal of LP Air, HP Air and RCW pipelines support iron structures bridges and towers valves with end fitting gauges and accessories at NDV for a period of three years

Laying and Jointing PVC Pipe. Heading

Supply and construction of RCC pedestals / supports (with Steel rods)

Supply and fitment of MS angle bar supports to concrete walls by grouting of following sizes:- (a) 75 x 75 mm, 8 mm thickness

(b) 65 x 65 mm, 8 mm thickness

(c) 40 x 40 mm, 6 mm thickness

(d) 25 x 25 mm, 6 mm thickness

(e) 50 mm width 6 mm thickness clamps with bolts and nuts

(f) Charges for entire MS angle support including Cutting, welding and fixing by grouting with grouting bolts and nuts supplied by firm

Supply, laying, welding of MS ERW pipeline as per IS 1239 / ASTM 100 Gr-B Sch-40 and clamping at every 3 m interval using 50 mm width 6 mm thickness and MS flat bar supplied by firm:- (a) 400 mm dia, 6 mm thickness

(b) 350 mm dia, 6 mm thickness

(c) 300 mm dia, 6 mm thickness

(d) 250 mm dia, 5 mm thickness

(e) 200 mm dia, 5 mm thickness

(f) 150 mm dia, 5mm thickness

(g) 100 mm dia, 5 mm thickness

(h) 80 mm dia, 4 mm thickness

(j) 50 mm dia, 4 mm thickness

(k) 25 mm dia, 4 mm thickness

Supply of MS ERW pipeline as per IS 1239 / ASTM 100 Gr-B Sch-40 and clamping at every 3 m interval using 50 mm width 6 mm thickness and MS flat bar supplied by firm:- (a) 400 mm dia, 6 mm thickness

(b) 350 mm dia, 6 mm thickness

(c) 300 mm dia, 6 mm thickness

(d) 250 mm dia, 5 mm thickness

(e) 200 mm dia, 5 mm thickness

(f) 150 mm dia, 5mm thickness

(g) 100 mm dia, 5 mm thickness

(h) 80 mm dia, 4 mm thickness

(j) 50 mm dia, 4 mm thickness

(k) 25 mm dia, 4 mm thickness

Supply and fitment of CI double flanged raising spindle sluice valves with SS spindle & bronze box nut as per IS:780 Range 50 mm dia-300 mm dia IS: 14846 (2000) PN 10bar :- (a) 400 mm dia

(b) 350 mm dia

(c) 300 mm dia

(d) 250 mm dia

(e) 200 mm dia

(f) 150 mm dia

(g) 100 mm dia

(h) 80 mm dia

(j) 50 mm dia

(k) 25 mm dia

Supply and fitment of ON OFF type 415V AC 3phase multi turn electrical actuator operated resilent seated gate valve. Housing & cover Cast iron. Enclosure Water tight IP 67. Ambient temperature: -10 deg C to 55 deg C. Torque switches: 2X SPDT. Limit switches: 2X SPDT. Indicator: Continuous position indicator. Manual override: Hand wheel. Valve details: Body DI, Disc: DI+EPDM, Stem: SS 410, Design & Mfg standard BS 5163, Valve rating 10Bar,End connection Flanged End. (a) 200 mm dia

(b) 150 mm dia

Supply and fitment of plug type Audco valve with screw type end fittings on both sides:- (a) 25 mm dia

(b) 15 mm dia

Supply and fitment of plug type Audco valve with both ends flanged. (a) 50 mm dia.

(b) 25 mm dia.

Supply and fitment of TVS bolts and nuts with washers:- (a) 18 x 90 mm

Supply, welding and fitment of LP Air collectors:- (a) 200 mm dia and 400 mm dia length with 06 in nos outlets and connectors with both ends threaded to suit Audco valves fitment of 15 mm and 25 mm dia. (b) 100 mm dia and 300 mm dia length with 02 in nos outlets and connectors with both ends threaded to suit Audco valves fitment of 15 mm and 25 mm dia.

Supply of Primer and paints by firm for Chipping and cleaning of pipeline with wire brush to remove rust and applying one coat of zinc phosphate primer confirming to IS: 14506 and two coats of sky blue ready mix paint finishing exterior conforming to IS: 6951:- (a) 400 mm dia

(b) 300 mm dia

(c) 250 mm dia

(d) 200 mm dia

(e) 150 mm dia

(f) 100 mm dia

(g) 80 mm dia

(h) 50 mm dia

(j) 25 mm dia

Supply of paints by firm for Chipping and Cleaning of pipeline with wire brush to remove surface rust, bubbles & dust and applying one coat of sky blue ready mix paint finishing exterior conforming to IS: 6951:- (a) 400 mm dia

(b) 300 mm dia

(c) 250 mm dia

(d) 200 mm dia

(e) 150 mm dia

(f) 100 mm dia

(g) 80 mm dia

(h) 50 mm dia

(j) 25 mm dia

Supply, laying and applying of 1.6 mm thickness rough fiber coating including Fiber mat, Resin, Sky blue pigment, Accelerator and catalyst for MS ERW LP air pipe lines and SS HP air pipe lines in galleries and jetties

Supply of primer and paints by firm for Chipping to bare metal, cleaning of cope points with wire brush to remove surface rust, bubbles & dust and applying of one coat of zinc phosphate primer conforming to IS: 14506 and two coats of sky blue ready mix paint finishing exterior conforming to IS:6951

Supply of primer and paints by firm for Chipping to bare metal, cleaning of entire metal surface of support bridges / towers with wire brush to remove surface rust & dust and applying one coat of chrome/zinc primer conforming to IS: 6951 and two coats of golden yellow enamel paint on the inner and outer surface conforming to IS:2932/-2003.

Supply of paints by firm for chipping to bare metal, Cleaning of entire metal surface of support bridges / towers with wire brush to remove surface rust, bubbles & dust and surface preparation of entire metal surface of support bridges / towers and applying of one coat of golden yellow paint on the inner and outer surfaces conforming to IS: 2932-2003.

Renewal of vertical support structure of bridges / towers carrying LP Air pipelines. Work includes cutting and removal of old structure and welding of new structure by below mentioned materials supplied by firm. Erecting of vertical support structure of bridges / towers by firms tools and tackles including crane. Each meter of vertical support structure of bridge consists of :- (a) 75 x 75 mm MS angle bar, 8 mm thickness

(b) 65 x 65 mm MS angle bar, 6 mm thickness

(c) 50 x 50 mm MS angle bar, 6 mm thickness

Renewal of horizontal support structure of bridges / towers carrying LP Air pipelines. Work includes cutting and removal of old structure and welding of new structure by below mentioned materials supplied by firm. Erecting of horizontal support structure of bridges / towers by firms tools and tackles including crane. Each meter of vertical support structure of bridge consists of :- (a) 75 x 75 mm angle bar, 8 mm thickness

(b) 65 x 65 mm angle bar, 6 mm thickness

(c) 50 x 50 mm angle bar, 6 mm thickness

(d) 50 x 100 x 50 mm U channel, 6 mm thick

(e) MS flat strip 6 mm thickness, 50 mm width

(f) MS Rod 16 mm

Renewal of horizontal and vertical support structure of bridges / towers carrying LP Air pipelines. Work includes cutting, removal of old structure and welding of old structure. Erecting of horizontal and vertical support structure of bridges / towers by firms tools and tackles including crane.

Stay wire for bridge support and shackles including adjustment screw rods with plate.

Chipping of outer surface to bare metal, painting of one coat of heat resistant primer and two coats of heat resistant aluminum paint confirming to IS: 13183.

Supply and welding of following Long MS bends:- (a) 400 mm dia, 6 mm thickness

(b) 350 mm dia, 6 mm thickness

(c) 300 mm dia, 6 mm thickness

(d) 250 mm dia, 5 mm thickness

(e) 200 mm dia, 5 mm thickness

(f) 150 mm dia, 5 mm thickness

(g) 100 mm dia, 5 mm thickness

(h) 80 mm dia, 4 mm thickness

(j) 50 mm dia, 4 mm thickness

(k) 25 mm dia, 4 mm thickness

Supply and welding of following Short MS bends:-cx(a) 400 mm dia, 6 mm thickness

(b) 350 mm dia, 6 mm thickness

(c) 300 mm dia, 6 mm thickness

(d) 250 mm dia, 5 mm thickness

(e) 200 mm dia, 5 mm thickness

(f) 150 mm dia, 5 mm thickness

(g) 100 mm dia, 5 mm thickness

(h) 80 mm dia, 4 mm thickness

(j) 50 mm dia, 4 mm thickness

(k) 25 mm dia, 4 mm thickness

Supply and welding of following MS flanges:-(a) 400 mm dia, 25 mm thickness

(b) 350 mm dia, 20 mm thickness

(c) 300 mm dia, 20 mm thickness

(d) 250 mm dia, 20 mm thickness

(e) 200 mm dia, 16 mm thickness

(f) 150 mm dia, 12 mm thickness

(g) 100 mm dia, 12 mm thickness

(h) 80 mm dia, 12 mm thickness

(j) 50 mm dia, 12 mm thickness

Supply of MS Nipples 15mm dia, 15cm length, 3mm thickness and MS Nipples with both ends threaded to suit 15 mm Audco valves fitment

Supply and fitment of MS Nipples 15mm dia, 15cm length, 3mm thickness and MS Nipples with both ends threaded to suit Audco valves fitment of 15 mm for drain lines in different dia pipe lines by welding

Supply and fitment of pressure gauges, confirming to IS:15190 (100mm dia, Accuracy of +/- 1% Full Scale, Line mounted) Range: 0 to 10 kg/cm2, Make: WIKA with MS Nipple 15mm dia

Supply and fitment of LP air filter and filled with desiccant with drain plug & pressure gauge confirming to IS:15190, 0 to 10 kg/cm2 one side female ended threaded and one side male threaded fitted to LP Air cope point

Supply and fitment of paranite joints size 4’ x 6’. (a) 4 mm thickness

(b) 3 mm thickness

(c) 2 mm thickness

Supply, laying, welding, renewal and fitment of SS pipe conforming to AISI 304 (OD: 33 mm and ID: 15 mm)

Supply, welding and fitment of suitable nipples conforming to SS AISI: 304 to be welded on to pipe of serial 30.

Supply, welding and fitment of ‘T’ joints of the following :- Pressure 400 bar conforming to SS AISI: 316(Ti) as per ASTM-A959 (table-1) suitable to pipe at serial 30 and for pressure gauges line. (step type fitting). (a) Inner Dia 15x15x15mm, Outer Dia 50mm/XXS schedule

(b) Inner Dia 15x15x6 mm, Outer Dia 30mm/XXS schedule

(c) Inner Dia 15mm 1"x1"x1", XXS schedule

(d) Inner Dia 15mm 1"x1/2"x1", XXS schedule

(e) Inner Dia 15mm 1"x1/4"x1", XXS schedule

Supply, welding and fitment of ‘L’ type SS bends Pressure 400 bar conforming to SS AISI: 316 (Ti) as per ASTM-A959 (table-1) suitable to pipe at serial 30 and for pressure gauges line. (step type fitting). (a) Inner Dia 15mm, Outer Dia 1"x 1"x XXS Sch

(b) Inner Dia 9.5 mm, Outer Dia 1/2"x 1/2"x 160 Sch

(c) Inner Dia 6mm, Outer Dia 1/4"x 1/4"x 160 Sch

Supply, welding and fitment of 3 Piece adapter, Pressure 400 bar conforming to SS AISI: 316(Ti) as per ASTM-A959 (table-1) suitable to pipe at serial 30 and for pressure gauges line. (a) Inner Dia 15mm, Outer Dia confirms 1/2" BSPF x 1-1/4" BSPM x 1" XXS Nipple

(b) Inner Dia 15mm, Outer Dia confirms 3/4" BSPM x 1-1/4" BSPM x 1" XXS Nipple

(c) Inner Dia 15mm, Outer Dia confirms 1/2" BSPM x 1-1/4" BSPM x 1" XXS Nipple

(d) Inner Dia 9.5 mm, Outer Dia confirms 1/2" NPTM x 1" BSPM x 1/2" NPTM XXS Nipple

(e) Inner Dia 15 mm, Outer Dia confirms 1/2" NPTM x 1-1/2" BSPM x 1" XXS Nipple

(f) Inner Dia 6 mm, Outer Dia confirms 1/4" NPTM x 1" BSPM x 1/2" 160Sch XXS Nipple

(g) Inner Dia 6 mm, Outer Dia confirms 1/2" BSPM x 1" BSPM x 1/2" 160Sch XXS Nipple

(h) Inner Dia 6 mm, Outer Dia confirms 1/2" BSPF x 1" BSPM x 1/2" 160Sch XXS Nipple

(j) Inner Dia 15mm, Outer Dia confirms 1-1/4"BSPM X 1/2" NPTM x 1" XXS Nipple

Supply, welding and fitment of SS fitting items Pressure 400 bar conforming to SS AISI: 316(Ti) as per ASTM-A959 (table-1) suitable to pipe at serial 30 and for pressure gauges line. (a) Adapter Inner Dia 15mm, Outer Dia confirms 1/2" NPTM x 1/2" NPTM

(b) Adapter Inner Dia 15mm, Outer Dia confirms 1/2" NPTM x 1/2" NPTF

(c) Adapter Inner Dia 15mm, Outer Dia confirms 1/2" NPTM x 1" XXS

(d) Adapter Inner Dia 06mm, Outer Dia confirms 1/4" NPTM x 1/2" 160 Sch

(e) Adapter Inner Dia 06mm, Outer Dia confirms 1/2" BSPF x 1/2" 160 Sch

(f) Adapter Inner Dia 15mm, Outer Dia confirms 3/4" BSPM x 1" XXS

(g) Adapter Inner Dia 15mm, Outer Dia confirms 1/2" BSPF x 1" XXS

(h) Adapter Inner Dia 9.5mm, Outer Dia confirms 1/2" NPTM x 1/2" NPTM XXS

(j) Adapter Inner Dia 9.5mm, Outer Dia confirms 1/2" NPTM x 1/2" BSPF XXS

(k) Adapter Inner Dia 6mm, Outer Dia confirms 1/2" NPTM x 1/4" NPTM XXS

Supply, welding and fitment of SS fitting items Pressure 400 bar conforming to SS AISI: 316(Ti) as per ASTM-A959 (table-1) suitable to pipe at serial 30 and for pipe line. (a) Outlet adapters flange 1"XXS Schedule OD x 1/2"BSPM

(b) Gauge adapters 1/2" BSPF x 1/4" OD XXS Schedule

Supply, welding and fitment of SS fitting items Pressure 400 bar conforming to SS AISI: 316 suitable to pipe at serial 30 and for pipe line. (a) Manifold valve adapters 1/4"NPTM x 1/4"OD make: M/s Swagelok / M/s parker

(b) Weldable adapters make: M/s Swagelok Pattern No SS-400-1-4W

(c) Union Tee make: M/s Swagelok Pattern No SS-400-3

(d) Tee make: M/s Parker Pattern No SS-TTT-FL8-FL8-FL4

(e) Adapter make: M/s Swagelok pattern No SS-810-7-8 / M/s parker 8FSC8N 1/2"NPTF x 1/2"OD

(f) Adapter make: M/s Swagelok pattern No SS-810-1-8 / M/s parker 8MSCC8N 1/2"NPTM x 1/2"OD

(g) Adapter make: M/s BuTech pattern No LPA8P8L 1/2"NPTM x 1/2"OD

Supply, welding and fitment of SS male & female unions conforming to SS AISI: 304 suitable to pipe at serial 26.

Supply and fitment of 3 mm thickness tapered red copper washers to suit the nipples at serial 26

Supply of SS dummy plugs with suitable washers conforming to SS AISI: 304 to suit the pipe of serial 30

Supply and fitment of pressure gauges, confirming to IS:15190, (100mm dia, Accuracy of +/- 1% Full Scale, Line mounted) of the following:- 0 to 400 kg/cm2, Make: WIKA

Supply and fitment of pressure gauges, confirming to IS:15190 (100mm dia, Accuracy of +/- 1% Full Scale, Line mounted) of the following:- 0 to 600 kg/cm2, Make: WIKA

Supply of 1/2" Braided rubber hose of 600 bar working pressure

Supply and fitment of the Male / female adaptors to suit the rubber hose to end users at valve outlet of ser 38.

Supply and fitment of the dummy plugs suitable to Isolating valve/Interconnecting valves/ Master valve/Drain valve.

Supply and fitment of the dummy plugs suitable to needle valves.

Supply and fitment of the needle Valve M/s Swagelok, Pattern No SS-26VF8-BPL-PK

Supply and fitment of the check valve M/s Swagelok, Pattern No SS-CHM8-1

Supply, fitment and commissioning of Adaptor couplings with the following specifications:- Adaptor coupling. Dia -15, Pressure - 400 (nipple, union, taper copper gasket, back support washer). Material: Nipple-SS AISI-316 (Ti) as per ASTM-A959 (table-1), adaptor & union-Alloy steel, garde-35xM, gost-4543-7, copper taper gasket-copper FRTP-2 as per IS-191 (part-VII) -80, Back support washer-Naval brass, CZ-112 as per BS

Supply, fitment and commissioning of Screw couplings with the following specifications:- Screw coupling. Dia-15 Pressure -400 (Nipple, adapter, taper copper gasket, back support washer). Material: Nipple-SS AISI-316 (Ti) as per ASTM-A959 (table-1), Adaptor-Alloy steel, garde-35xM, gost-4543-7, copper taper gasket-copper FRTP-2 as per IS-191 (part-VII) -80, Back support washer-Naval brass, CZ-112 as per BS

Supply, fitment and commissioning of Adaptor couplings with the following specifications:- Adaptor coupling . Dia -06, Pressure - 400 (nipple, union, taper copper gasket, back support washer). Material: Nipple-SS AISI-316 (Ti) as per ASTM-A959 (table-1), adaptor & union-Alloy steel, garde-35xM, gost-4543-7, copper taper gasket-copper FRTP-2 as per IS-191 (part-VII) -80, Back support washer-Naval brass, CZ-112 as per BS

Supply, fitment and commissioning of Screw couplings with the following specifications:- Screw coupling . Dia-06 Pressure-400 (Nipple, adapter, taper copper gasket, back support washer). Material: Nipple-SS AISI-316 (Ti) as per ASTM-A959 (table-1), Adaptor-Alloy steel, garde-35xM, gost-4543-7, copper taper gasket-copper FRTP-2 as per IS-191 (part-VII) -80, Back support washer-Naval brass, CZ-112 as per BS

Supply and fitment of the following: - (a). 8 mm dia SS “U” lamps with suitable nuts, bolts and washers as per IS 1367, Part 14, Sec1 standards (including supply of fasteners and rubber mat) (for clamping of periodical intervals), to secure the pipe to suitable the pipe at serial 30 on angular bedding.

(b). MS Angular 50 x 50 mm, 4 mm thickness.

(c). MS “U” channel 50x100x50 mm, 5 mm thickness.

(d). Supply and fitment of suitable SS clamps, width 50 mm, and thickness 5 mm for fixing/securing the valves with suitable fasteners as per IS 1367, Part 14, Sec1 standards (including supply of fasteners and rubber mat by firm).

Manufacturing, supply and fixing of GI boxes with the following specifications for securing cope points with a door opening / closing facility:- G.I Sheet 3 mm thickness, Door hinges-02 No’s (each box). MS Angular 25x25 mm, thickness 3 mm, for support structure inside and around the box with locking arrangement. GI Box size: Height-60 cm, Length-60 cm, width-60 cm. Opening and closing arrangements at front side of the GI box, Proper holes should be made to the GI Box. Valve inside the GI box firmly fixed to the supporting structure (M S Angular), all four sides of the angular are fitted to the ground by grouting and concreting of 0.15 M depth, the GI box is to be painted with one coat of red oxide.

Supply and painting of pipe lines/ cope points (a). Cleaning and Painting of pipeline. Applying one coat of sky blue ready mix paint finishing exterior confirming to IS: 6951 to pipe at serial 30.

(b). Cleaning and Painting of pipeline. Applying two coats of sky blue ready mix paint finishing exterior confirming to IS: 6951 to pipe at serial 30.

(c). Cleaning and painting of cope point. Applying two coats of sky blue ready mix paint finishing exterior conforming to IS: 6951.

(d). Excavation of trench 1 feet depth x 1 feet width x length for laying and removal of HP air pipeline.

(e). Supply and rolling of 02mm tar sheet (two rows) for underground pipeline.

(f). Radiographic welding of all SS joints to be carried out. (Film to be produced for all joints).

Supply and fitment of 2 way manifold valve suitable SS 304 pipe line OD 33mm and ID 15mm with end connections M/s Fitok

Supply and fitment of manifold gauge valve suitable SS 304 pipe line OD 1/2" and ID 6 mm with end connections M/s Swagelok / M/s parker

Supply and fitment of Ball valve suitable SS 304 pipe line OD 33mm and ID 15mm with end connections Component / Material Working Pressure (bar) / 400 bar (4:1 Pressure boundary designed safety factor and Bi directional) Working Temperature(oC) / -54 oC - 100 oC Body 316 / 316L SS (Two piece body Design-minimal leakage paths, bubble tight shut off and Designed to comply with requirements of ANSI/ASME B16.34) Bonnet Packing PTFE (standard) or graphite Bonnet seals Seat PEEK standard ball seat materials Plug 316 SS with PTFE tape Stem 316 SS (Anti Blow out stem) Gland packings PTFE and Graphoil Gland nut 316 SS (Floating ball principle with dynamic response seats featuring inherent self relief and integral compression ends available eliminating taper threads and thread sealants) Shroud Gland Handle locknut Handle washer Locking pin Gland locknut Handle Nylon 6/6 with 316 SS insert, Locking arrangement to be provided Testing Pressure 600Bar Pneumatic Make: Swagelok, Parker Hannifin, HP Valves & Co

Supply and fitment of Needle valve suitable SS 304 pipe line OD 33mm and ID 15mm with nipples and end connections Component / Material Working Pressure (bar) 400 bar Working Temperature(oC) -54 oC - 100 oC Body 316 / 316L SS / ASTM A182 Type F316 Bonnet Needle S17400 SS / A564 Condition H1150D Packing PTFE (standard) or graphite Bonnet seals Packing nut ASTM A 479 Type 316 Plug 316 SS with PTFE tape Gland nut 316 SS Shroud Gland Handle locknut Handle washer Stem Locking pin Gland locknut Handle Nylon 6/6 with 316 SS insert ,Locking arrangement to be provided Testing Pressure 600Bar Pneumatic Make: Swagelok, Parker Hannifin, HP Valves & Co

Supply and fitment of Non Return / Check valve suitable SS 304 pipe line OD 33mm and ID 15mm with nipples and end connections Component / Material Working Pressure (bar) 400 bar Working Temperature(oC) -54 oC - 100 oC Body 316 / 316L SS ASTM A 276 Poppet SS 316, ASTM A 479 (Spring stress should be minimized by back stopped poppet) Seat material Fluorocarbon rubber (Resilient, custom moulded, blow-out resistant seat design) Testing Pressure 600Bar Pneumatic Make: Swagelok, Parker Hannifin, HP Valves & Co

Supply, laying and welding with 20 mm thickness reinforcement lining inside the pipe with wire mesh of the following diameters as per IS 3589:2001 standards:- (a) 700 mm dia, 6 mm thick

(b) 600 mm dia, 6 mm thick

(c) 500 mm dia, 6 mm thick

(d) 400 mm dia, 5 mm thick

Supply, laying and welding of the following diameters (500 mm dia above MS Rolled welded pipe and 500 mm dia below MS ERW pipe):- MS ERW pipeline as per IS 1239/ASTM 100 Gr-B Sch-40 up to 150mm NB and IS 3589:2001 for more than 150 mm pipe lines. (a) 700 mm dia, 6 mm thick

(b) 600 mm dia, 6 mm thick

(c) 500 mm dia, 6 mm thick

(d) 400 mm dia, 5 mm thick

(e) 350 mm dia, 5 mm thick

(f) 300 mm dia, 5 mm thick

(g) 250 mm dia, 5 mm thick

(h) 200 mm dia, 5 mm thick

(j) 150 mm dia, 4.85 mm thick

(k) 100 mm dia, 4.85 mm thick

(l) 80 mm dia, 4 mm thick

Cutting and removal of old pipeline of the following diameters (including digging if required) and handed over at the department premises:- (a) 700 mm dia

(b) 600 mm dia

(c) 500 mm dia

(d) 400 mm dia

(e) 350 mm dia

(f) 300 mm dia

(g) 250 mm dia

(h) 200 mm dia

(j) 150 mm dia

(k) 100 mm dia

(l) 80 mm dia

(m) 50 mm dia

(n) 25 mm dia

Supply, laying and welding of MS Bends of the following diameters (500 mm dia above MS rolled welded pipe and 500 mm dia below MS ERW pipe) (a) 700 mm dia, 6 mm thick

(b) 600 mm dia, 6 mm thick

(c) 500 mm dia, 6 mm thick

(d) 400 mm dia, 5 mm thick

(e) 350 mm dia, 5 mm thick

(f) 300 mm dia, 5 mm thick

(g) 150 mm dia, 4.85 mm thick

(h) 100 mm dia, 4.85 mm thick

Supply, laying and welding of MS bends under water inside of the cold & hot water tanks of the following diameters:- (a) 700 mm dia, 6 mm thick

(b) 600 mm dia, 6 mm thick

(c) 500 mm dia, 6 mm thick

Supply, laying and welding of MS Flanges (30 mm thickness for 700 & 600 mm dia, 20-25 mm thickness for 300 mm dia to 400 mm dia and 15 mm thickness for 250 mm dia & below) of the following diameters:- (a) 700 mm dia, 6 mm thick

(b) 600 mm dia, 6 mm thick

(c) 500 mm dia, 6 mm thick

(d) 400 mm dia, 5 mm thick

(e) 350 mm dia, 5 mm thick

(f) 300 mm dia, 5 mm thick

(g) 250 mm dia, 5 mm thick

(h) 200 mm dia, 5 mm thick

(j) 150 mm dia, 4.85 mm thick

(k) 100 mm dia, 4.85 mm thick

Supply and fitment of MS Blind Flanges (30 mm thickness for 700 & 600 mm dia, 20-25 mm thickness for 300 mm dia to 400 mm dia and 15 mm thickness for 250 mm dia & below) of the following diameters:- (a) 700 mm dia, 6 mm thick

(b) 600 mm dia, 6 mm thick

(c) 500 mm dia, 6 mm thick

(d) 400 mm dia, 5 mm thick

(e) 350 mm dia, 5 mm thick

(f) 300 mm dia, 5 mm thick

(g) 250 mm dia, 5 mm thick

(h) 200 mm dia, 5 mm thick

(j) 150 mm dia, 4.85 mm thick

(k) 100 mm dia, 4.85 mm thick

Supply and fitment of CI sluice gate valves as per IS:14846/2000 PN 10 of the following diameters:- (a) 600 mm dia

(b) 500 mm dia

(c) 400 mm dia

(d) 200 mm dia

(e) 150 mm dia

(f) 100 mm dia

(g) 80 mm dia

(h) 50 mm dia

(j) 40 mm dia

Dismantling, overhauling and fitment of CI sluice gate valves to be pressure tested for zero leak efficiency prior to installation of the following diameters(including all required spares to be supplied by firm) PN 10:- (a) 600 mm dia

(b) 500 mm dia

(c) 400 mm dia

(d) 200 mm dia

(e) 150 mm dia

(f) 100 mm dia

(g) 80 mm dia

(h) 50 mm dia

(j) 40 mm dia

Dismantling, overhauling and fitment of non-return valves, these are to be pressure tested for zero leak efficiency prior to installation of 400 mm dia (including spares) PN 10

Supply and installation of air/pressure relief valves of the following diameters:-(a) 100 mm dia

(b) 80 mm dia

(c) 60 mm dia

Dismantling, overhauling and fitment of Air relief valves, these are to be pressure tested for zero leak efficiency prior to installation of the following diameters(including all required spares to be supplied by firm) PN 10:- (a) 100 mm dia

(b) 80 mm dia

(c) 60 mm dia

Supply and fitment of TVS MS bolts (with full thread) and nuts with suitable washers of the following sizes:- (a) 20 mm x 110 mm

(b) 20 mm x 100 mm

(c) 20 mm x 110 mm

(d) 18 mm x 100 mm

(e) 14 mm x 60 mm

(f) 10 mm x 75 mm

(g) 12 mm x 90 mm

(h) 8 mm x 45 mm

(j) Studs 30 mm x 110 mm

Supply and fitment of Neoprene rubber gasket, (Acrylo Nytrile) rubber joint to confirm with IS 11149-1984, Type 4, Class 4B with shore hardness IRHD-70 of the following thickness:- (a) 3 mm thickness

(b) 4 mm thickness

(c) 6 mm thickness

Supply and wrapping of underground pipeline with 2 mm thickness plastic felt tar sheet for two turns:-

Supply, erection, welding of angular/channel structures for RCW pump house railing, ladders and plot forms, the list of material as follows:- (a) 75 mm x 150 mm x 75 mm U Channel, 6 mm thick

(b) 65 mm x 125 mm x 65 mm U Channel, 6 mm thick

(c) 65 mm x 65 mm Angular, 6 mm thick

(d) 50 mm x 50 mm Angular, 6 mm thick

(e) 40 mm x 40 mm Angular, 6 mm thick

(f) Checker plate, 10 mm thickness

(g) 80 mm dia GI pipe

(h) 50 mm dia GI pipe

(j) 40 mm dia GI pipe

(k) 25 mm dia GI pipe

Clearing and cleaning of collected mud, debris and stagnate particles from cold water basin of RCW Cooling tower

(a) Repairs and cement plastering to cold water passage RCC pipe, cold water passage trench and pedestals for support the pipes with RCC 1:2:4 ratios

(b) MS Steel per Kg

Excavation of pipeline for trench and filling back after completion of the job by bringing the area in the original shape by proper cushioning arrangements, filling up the soil and road repair are to carried out to bring back the area in the previous state. (a) Hard soil

(b) Soft soil

Supply of paints by firm for Cleaning of pipeline with wire brush to remove surface rust, rust bubbles & dust and surface preparation of entire metal and applying one coat of hi build green paint as per IS:2379-1990:- (a) 700 mm dia

(b) 600 mm dia

(c) 400 mm dia

(d) 350 mm dia

(e) 300 mm dia

(f) 250 mm dia

(g) 200 mm dia

(h) 150 mm dia

(j) 100 mm dia

Supply of Primer and paints by firm for Chipping to bare metal, cleaning of pipeline with wire brush to remove rust, dust and surface preparation of entire metal and applying one coat of epoxy red-oxide paint as per NCDE-1416 and two coats of hi build green paint as per IS: 2379-1990:- (a) 700 mm dia

(b) 600 mm dia

(c) 400 mm dia

(d) 350 mm dia

(e) 300 mm dia

(f) 250 mm dia

(g) 200 mm dia

(h) 150 mm dia

(j) 100 mm dia

SARALA ENTERPRISES

GOKULKRISHNASAFETYANDENGINEERINGINDUSTRIES

KRISHNA ENGINEARING

ADHYANTA ENGINEERING PRIVATE LIMITED

SON and MOTHER ENGG ENTERPRISES