Urgent SITC of 125 KVA Silent D.G. power backup and required Electrical Installation work for PSA plant at District Hospital, Jalpaiguri.

Amount

E. I. Work

Supply & delivery of 1.1 KV Gr. XLPE/ PVC Armoured Aluminium Cable (Gloster / Havells /KEI Approved by EIC)

2 core 6 sq. mm.

4 core 50 sq. mm.

4 core 120 sq. mm.

4 core 240 sq. mm.

Laying of cable on wall/surface incl. S & F MS saddles with earthing attachment in 2X10 SWG GI (Hot Dip) Wire, making holes etc. as necy. mending good damages and painting [PWD/GS Page: F-1 Item: 2/b]

Laying of cable upto 3/4 core 25 sqmm [PWD/GS Page: F-1 Item: 2/b]

Laying of cable 3/3.5/4 core 35 sqmm to 50 sqmm [PWD/GS Page: F-1 Item: 2/c]

Laying of cable 3/3.5/4 core 120 sqmm to 150 sqmm [PWD/GS Page: F-1 Item: 2/e]

Dismentling the existing 6 nos 240 sqmm cable from 2 nos transformer & LT panel after disconnecting the same very carefully to avoid any damage and mending good the damages as per direction of EIC.

Making underground trench after cutting the concrete as per existing trench by santaraj and prepare 10 inch width brick wall at both side including plaster & neat cementing as per direction of EIC.

Fixing of Cable along the lenth of O.H. pole incl. S & F MS pole clamps fabricated from 25 mm x 6 mm MS flat incl. painting [PWD/GS Page: F-2 Item: 4]

Supply & delivery of 9 meter long PCC pole ( as per IS standard) Pole shall be rectangular in cross section. The top section shall be 225 MM X 100 MM and bottom section 395 MM X 100MM total length of 9 meters, over all weight of 670 kgs. Each pole shall be provided with 18 MM dia through holes suitable for 16 mm disc bolt at the following distance from the top along the minor axis.Each pole shall be provided with pre stressing steel wire of 4MM diameter with guaranteed ultimate’s strength of 175 kgs/mm2, 20 nos. as tensioned wire.

Erection of PCC pole of length as given below with/without sole plate & Cap etc. in CC foundation (Proportionand dimension indicated below), having 600x600x150 mm thickCC (4:2:1) base block below sole plate/pole with hard jhamametal including CC (6:3:1) muffing 0.30 mts. dia and 0.30 mts.above ground level including 3 mm thick neat cemented finishand GI earth bolt after making drilled holes etc. on pole & carriage of pole upto 1.6 Km from Store to work-site including filling upthe excavated earth pit with shifted soil and ramming properly Upto 9.0 mtr. Size 0.6x0.6x1.70 mts.

Supplying and Erection of Galv. Stay set complete with 7/8 SWG GI (Hot Dip) Stranded stay wire (45 ton quality), 1.8 mtr.x 16 mm dia Galv. (Hot Dip) stay rod 150 mmx150 mm x8 mm thick Galv. (Hot Dip) MS anchor plate, 356 mmx13 mm dia Galv. bow (with ratchet type nut), thimble, Galv. Box type Stay Clamp in CC foundation (6:3:1) having hard jhama metal incl. providing earth connection

Supply & fixing staywire with 7/10 SWG GI (Hot Dip) stranded Wire (45 Ton quality) incl. S & F GI thimble and making off binding at both ends.

Supply & fixing a fabricated half round MS clamp suitable for fixing of 120sq.mm. PVC Al/A Cable

Laying of one No. cable upto 35 sqmm in underground trench 460 mm wide x 760 mm average depth, with brick protection on the top of the cable with 8 (eight) Nos. bricks per metre, including filling the space between the brick & cable and also the trench with shifted soil, leveling up and restoring surface duly rammed.

Laying of one No. 240 sqmm cable [PWD/GS Page: F-2 Item: 1/c]

S & F compression type brass cable gland complete with brass gland, brass ring & rubber ring for dust & moisture proof entry of XLPE/PVC armoured cable.[PWD/GS Page No.: F-4 Item No.: 7/c]

2 core 6 sq. mm.

4 core 50 sq. mm.

4 core 120 sq. mm.

4 core 240 sq. mm.

Finishing the end of the XLPE/PVC armoured cableas by crimping method incl. S&F solderless socket (Dowels make), tapes, anticorrosive paste & joiting materials. [PWD/GS Page No.: F-5 Item No.: 8/b]

2 core 6 sq. mm.

4 core 50 sq. mm.

4 core 120 sq. mm.

4 core 240 sq. mm.

S&F medium gauge 65mm dia GI Pipe (ISI-Medium) Protection with necessary fittings and jointing metarials as required as per GS. [PWD/GS Page: F-6 Item: 11]

Earthing with 50 mm dia GI pipe 3.64 mm thick x 3.04 Mts. long and 1 x 4 SWG GI (Hot Dip) wire, with an average depth of 3.65 Mts. below the ground level (For soft Soil: ISI-Medium GI pipe) [PWD/GS Page No.: G-1 Item No.:2/a]

Excavation of soil for installation of Earth Electrode and filling & ramming. (Soft Soil) [PWD/GS Page: G-1 Item:1]

Extra for providing masonery enclosure on the top of the earth electrode of overall size 86.36 cm x 86.36 cm x 46 cm deep (below Ground level) complete with cemented brick work(1:6) of 25 cm width duly plastered with cement morter (inside) CI hinged inspection cover of size 36.56 cm x 35.56 cm with locking arrangement, GI reducer including drilling of 46 nos. 12 mm dia holes on the GI pipe [PWD/GS Page: G-2 Item: 3/a]

Extra for treatment of soil by using salt & charcoal or coke for plate electrode [PWD/GS Page: G-2 Item: 3/b]

S&F earth busbar of galvanized (Hot Dip) MS flat on wall having clearance of 6 mm from wall including providing drilled holes on the busbar complete with GI bolts, nuts, washers, spacing insulators etc. as required [PWD/GS Page: G-2 Item: 4/a]

S&F galvanized (Hot Dip) MS flat 40 mm x 6 mm on wall

Connecting the equipments body to earth busbar including S&F galvanised (Hot Dip) MS flat on wall/floor with GI saddles as required and connection to equipments incl. drilling holes, with bolts, nuts, washers etc.

S&F 20 mm x 3 mm galvanised (Hot Dip) MS flat [PWD/GS Page:G-3 Item: 5/d]

Supplying and fixing L&T 100A 415V, MCCB of breaking capacity 25 KA/35 KA with fixed thermal and fixed magnetic flash adjustable thurmal and fixed magnetic settings in D.B. enclosure and necessary connection and S & F of 4 nos. spreader terminal with rotary handel. (L & T).

Supplying and fixing L&T 160A 415V, MCCB of breaking capacity 25 KA/35 KA with fixed thermal and fixed magnetic flash adjustable thurmal and fixed magnetic settings in D.B. enclosure and necessary connection and S & F of 4 nos. spreader terminal with rotary handel. (L & T).

Supplying and fixing Havells make 415V, 200A TPN on load front operated Changeover switch with Sheet Steel enclosure on angle iron frame on wall with nuts bolts etc [PWD/GS Page: D-2 Item: 3/a] (L & T).

Earthing with 50 mm dia GI pipe 3.64 mm thick x 3.04 Mts. long and 1 x 4 SWG GI (Hot Dip) wire, with an average depth of 3.65 Mts. below the ground level (For soft Soil: ISI-Medium GI pipe) [PWD/GS Page No.: G-1 Item No.:2/a]

Excavation of soil for installation of Earth Electrode and filling & ramming. (Soft Soil) [PWD/GS Page: G-1 Item:1]

Extra for providing masonery enclosure on the top of the earth electrode of overall size 86.36 cm x 86.36 cm x 46 cm deep (below Ground level) complete with cemented brick work(1:6) of 25 cm width duly plastered with cement morter (inside) CI hinged inspection cover of size 36.56 cm x 35.56 cm with locking arrangement, GI reducer including drilling of 46 nos. 12 mm dia holes on the GI pipe [PWD/GS Page: G-2 Item: 3/a]

Extra for treatment of soil by using salt & charcoal or coke for plate electrode [PWD/GS Page: G-2 Item: 3/b].

S&F earth busbar of galvanized (Hot Dip) MS flat on wall having clearance of 6 mm from wall including providing drilled holes on the busbar complete with GI bolts, nuts, washers, spacing insulators etc. as required [PWD/GS Page: G-2 Item: 4/a]

S&F galvanized (Hot Dip) MS flat 25 mm x 6 mm on wall

Connecting the equipments body to earth busbar including S&F galvanised (Hot Dip) MS flat on wall/floor with GI saddles as required and connection to equipments incl. drilling holes, with bolts, nuts, washers etc.

S&F 20 mm x 3 mm galvanised (Hot Dip) MS flat [PWD/GS Page:G-3 Item: 5/c]

Supply & fixing 6 way 300A powder coated MS box having 4-bar copper bus on wall by suitable size angle iron frame (Havells- cat no- IHBC030006).

Supply & fixing 4 way 300A powder coated MS box having 4-bar copper bus on wall by suitable size angle iron frame (Havells- cat no- IHBC030004).

S&F double door 4-Way Horizontal TPN MCB Distribution board with IP-42/43 protection, concealed in wall (Legrand: (607715 /Siemense /Havells Metalica /ABB Elegance - as per direction of EIC) [PWD/GS Page: D-10 Item: 14 ]

S&F IP-42/43 wire way box for 4 way HTPN (Legrand /Siemense /Havells Metalica /ABB Elegance - as per direction of EIC) [PWD/GS Page: D-12 Item: 16]

Supply & fixing 240/415 V MCB of Breaking capacity 10kA & C characteristics on din rail of existing DBs and necessary connection (Legrand /Siemense /Havells Metalica /ABB Elegance - as per direction of EIC) [PWD/GS Page: D-6 Item: 7]

63A FP MCB

6-32A SP MCB

Distn. wiring in 3X22/0.3 (1.5 sqmm) single core stranded 'LS0H or ZHFR' PVC insulated & unsheathed single core stranded copper wire (Brand approved by EIC) in 19 mm bore, 3 mm thick polythen pipe (for horizontal & vertical run in wall and celing portion through prelaid polythen pipe) complete with all accessories embedded in wall to light/fan/call bell points with Modular type switch (Brand approved by EIC) fixed on Modular GI switch board with top cover plate and 2 no. suitable size “Ph & N” copper bar and 'L' sahped insulator chair & earthing attachment fixed on wall incl. mending good damages to original finish [equivalet to PWD/GS Page: E-20 Item: G/1](concealed)

On board 5A

Average run: 10 Mtr.

Cutting channel of 40 mm x 40 mm size on masonry wall incl. S&F heavy gauge 19mm polythene pipe dia as stated below, by means of iron hooks and supplying and drawing 18 SWG GI Wire as fish wire incl. mending good damages to building works [PWD/GS Page: E-02 Item: 3/a]

Cutting channel of 45 mm x 45 mm size on masonry wall incl. S&F heavy gauge 19mm polythene pipe dia as stated below, by means of iron hooks and supplying and drawing 18 SWG GI Wire as fish wire incl. mending good damages to building works [PWD/GS Page: E-02 Item: 3/a]

Supplying and Drawing 1.1 KV single core stranded 'LS0H or ZHFR' PVC insulated & unsheathed single core stranded copper wire (Brand approved by EIC) of the following sizes in the prelaid polythene pipe and by the prelaid GI fish wire and making necy. connection as required [equivalet to PWD/GS Page: E-09 Item: C/1]

2x36/0.3 (2.5 sqmm) + 1x22/0.3 (1.5 sqmm) as ECC

4x126/0.4 (16 sqmm) + 2x80/0.4 (10 sqmm) as ECC

Finishing of the PVC insulated wire ends by socketting with pin/ring type copper sockets and insulated tapes etc., including supplying sockets, tapes. [PWD/GS Page: F-5 Item: 9]

2x36/0.3 (2.5 sqmm) + 1x22/0.3 (1.5 sqmm)

4x126/0.4 (16 sqmm) + 2x80/0.4 (10 sqmm)

Supply & Fixing 240 V, two nos. 16 A, 3 pin Modular type plug socket (Brand approved by EIC) with two nos. 16A Modular type switch, without plug top on 6 Module GI Modular type switch board with 6 Module top cover plate flushed in wall incl. S&F switch board and cover plate and making necy. connections with PVC Cu wire and earth continuity wire etc.

S&F MS fan clam of two piece type for RC ceiling as per approved specification, fabricated from 40 mm x 9 mm MS flat including making good damages to building roof with satisfactory finishing and painting [PWD/GS Page:D-14 Item: 29]

Supply & Fixing 240V, Modular Socket (2 Module) type fan regulator (Step type) (Brand approved by EIC) on existing Modular GI switch board with top cover plate incl. making necy. connections etc. [PWD/GS Page: E-18 Item: 10 ]

S&F EPC make 12", 1420 rpm Heavy Duty Sweep A.C Exhaust fan incl. making hole on wall with nuts & bolts of required with S&F of louver shutter. [PWD/GS Page: C-4, Item: 28, 30 ]

Supply & Fixing 48" (1200mm) AC ceiling fan make: (Orient PSPO NEWBREEZE or SUMMERCOOL / equivalent of UHSA approved by EIC) complete with down rod, canopy fork, blades with all other accessories etc. but without regulator. [PWD/GS Page: C-3 Item: 21/a] Supply & fixing additional safety arrangement of ceiling fan by stranded GI strain wire of suitable gauge with one end fixed at RC clamp with special type of socket, nut-bolts, thimbles which throughly crimped with the strain wire and the wire passing through down rod (for upto 8 ft) and also other end connected with armature spindle by its existing jam nut hole with special arrangement (sample approved by EIC). The length of the strain wire up to 9ft also considering any type of work required i.e. enlarging the existing hole by file etc. to complete the job including installation as per direction of EIC (Static & Dynamic Load Test (in rotation of 1:20) certificate must be provided with final bill jointly with concerned Junior Engineer & authorised Electrical Supervisor of Agency).

S&F single 4ft LED tube light fitting incl. 4ft LED tube (LTT8-20), complete with all accessories suspended from ceiling/beem with L-clamp/ beem clamp. [Crompton: IGP161LT8-16 or Equivalent of Philips or Havells] [PWD/GS Page: C-2 Item: 17]

S&F double 4ft LED tube light fitting incl. 2 nos. 4ft LED tube lamp (LTT8-20), complete with all accessories suspended from ceiling/beem with L-clamp/ beem clamp. [Crompton: IGP162LT8-16 or Equivalent of Philips or Havells] [PWD/GS Page: C-2 Item: 17]

Extra for suspension for LED TUBE light fitting exceeding 25 cm with S&F additional 2 no. 20 mm dia EI conduit (14 SWG) supports & necy. PVC insulated wire and painting etc. as required by 2x24/0.20 mm (1.5sqmm.) flexible copper wire of 1.10 mt. length. [PWD/GS Page: C-2 Item: 16]

Supply & Fixing of 10W LED Lamp. Havells or Equivalent of Philips or Crompton )

Supply & fixing Sintex loop box of size 250 x 200 x 105 (Syntex: GSJB-2520) with half round clamp on pole and supply & fixing a best quality 32A, 2-pole barrier terminal and 6A SP MCB inside it including all accessories.

Distribution wiring in 1.1 KV 2x36/0.3 (2.5 sqmm) single core stranded 'LS0H or ZHFR' PVC insulated & unsheathed copper wire (Brand approved by EIC) in 19mm size polythine pipe incl. necy. fittings as required [equivalet to PWD/GS Page: E-2 & E-9 Item: 1 &1]

Supply & fixing of single arm header assembly made with 100mm dia GI pipe Jacket of 30cm long with 1.5 mtr. long 40mm dia GI pipe bracket duly welded with top cap at an angle of 110 degree with the vertical incl. 12 mm dia full threaded through nuts-bolts and 3 nos. supporting nut-bolts etc. including necessary painting as per direction of EIC.

Supply & fixing of Crompton: LST-60-CDL-M or equivalent of Philips outdoor type light fitting complete with all accessories to be fixed on 9 mtr. incl. S&F necy. length of 1.5 sqmm PVC insulated single core stranded annealed copper wire and making necessary connections as required.

SITC of 125 KVA DG SET

Supply, loading, unloading, Installation, Testing & Commissioning of silent type 125 KVA DG set confirming to CPCB -II emission norms as per the following specification. A) Diesel Engine : Liquid Cooled Diesel Engine, developing 1500rpm having blower fan of adequate capacity, fan guard, fan belts etc. the Diesel Engine shall be vertical, Electric start, compression ignition, 4 stoke, continuous run at 1500 rpm conforming to IS 10002, ISO-3046, BS 5514 standard with an permissible over load capacity of 10% for one hour in 12 hour in every 12 hrs. of operation complying present CPCB norms: B) Alternator: make Alternator suitable to deliver rated output of 125 KVA at 1500 rpm, 415V, 0.8 PF(lag), 50 HZ, 3 phase, in SPDP enclosure, self excited & self regulated, brushless. The Alternator should be IS: 4722/BS EN 60034-1 & & will be suitable for tropical condition having full load efficiency above 90%. Class of insulation shall be H, and enclose shall be IP23.

C) Gen set Controller : i) Supports Auto-Mains-Failure (AMF) function and Manual-Control-Panel (MCP) function. ii) Having indication/LCD display and measures the lube oil pressure, battery voltage, engine rpm, fuel level in the day tank, engine running hrs. indication, AC current, AC Voltage, AC frequency, AC power metering with suitable CTs for displaying the electrical parameters. iii) Safety Alarms for High engine temperature, low lube oil pressure, low radiator water level, low fuel level, battery high voltage, under/over speed along with safety trips for High Engine temperature, low lube oil. iv) Reads all inputs & controls the DG, Controls the engine speed (speed governing), (v) Over load protection, (vi) Over voltage under voltage protection. D) AMF Control Panel suitable for 125 KVA DG set consist of- microprocessor based AMF control unit, it monitors the engine safety parameters and alarm / trip condition will be displayed on front panel. Special alarm conditions include LLOP, HWT, overload, under/over speed, low fuel level. Specific indication includes various conditions of operations such as Load on mains, Load on DG, Mains healthy, DG ON, Auto & Manual mode. The control panel consist of multi function meter which displays AC current/Voltage, Frequency, Power factor, KWH etc. E) Base frame, F) Fuel Tank having at least 140 ltr capacity, G) 12 Volt batter with leads, Capacity at least 90AH , H) Canopy, I) Lube oil & coolant capacity at least 8.5 ltr & 13.5 ltr respectively. Make: Cummins / kirloskar green/ Ashore lay land/ Valvo Icher.

NOTE: 1) Rate should be cotated inclusive of all taxes, duties. 2) The DG set is to be delivered at site free of cost. 3) Necessary Warranty certificate, Testing and Commissioning report are to be submitted duly counter signed by the concern JE/AE. 4) A deceleration from engine manufacturer about no engine power direction upto 50°C ambient temp. should be uploaded during e-filling of Quotation. 5) All equipments must be warrented for a period of 18(eighteen) month from the date of supply or 12(Twelve) month date of commissioning which ever is earlier.

Earthing with 50 mm dia GI pipe 3.64 mm thick x 3.04 Mts. long and 1 x 4 SWG GI (Hot Dip) wire, with an average depth of 3.65 Mts. below the ground level (For soft Soil: ISI-Medium GI pipe) [PWD/GS Page No.: G-1 Item No.:2/a]

Earthing with 65 mm dia GI pipe (TATA-Medium)x 3.0 Mts. long and 1 No. 50 mm x 6 mm galvanized (Hot Dip) steel strip (4 Mts. long), 20 mm dia x 125 mm long galvanized bolt, double nuts, double washers including finishing both ends by making holes etc. and S & F 65 mm dia GI pipe (ISI-Medium) protection (3 Mts. long) to be filled with bitumen partly under the ground level and partly above ground level to an average depth of 3.65 Mts. [PWD/GS Page No.: G-1 Item No.:2/d]

Excavation of soil for installation of Earth Electrode and filling & ramming. (Soft Soil) (for Earthing & DG Foundation) [PWD/GS Page: G-1 Item:1]

Extra for providing masonery enclosure on the top of the earth electrode of overall size 86.36 cm x 86.36 cm x 46 cm deep (below Ground level) complete with cemented brick work(1:6) of 25 cm width duly plastered with cement morter (inside) CI hinged inspection cover of size 36.56 cm x 35.56 cm with locking arrangement, GI reducer including drilling of 46 nos. 12 mm dia holes on the GI pipe [PWD/GS Page: G-2 Item: 3/a]

Extra for treatment of soil by using salt & charcoal or coke for plate electrode [PWD/GS Page: G-2 Item: 3/b]

S&F earth busbar of 40X6mm galvanized (Hot Dip) MS flat on wall having clearance of 6 mm from wall including providing drilled holes on the busbar complete with GI bolts, nuts, washers, spacing insulators etc. as required [PWD/GS Page: G-2 Item: 4/a]

Connecting the equipments body to earth busbar including S&F 25X6mm galvanised (Hot Dip) MS flat on wall/floor with GI saddles as required and connection to equipments incl. drilling holes, with bolts, nuts, washers etc. [PWD/GS Page:G-3 Item: 5/d]

Single Brick Flat Soling of picked jhama bricks including ramming and dressing bed to proper level, Laying of Brick and filling joints with local sand. (PWD Building Schedule Page No.: 14 Item: 1,2)

Controlled Cement concrete with well graded stone chips (20 mm graded nominal size) excluding shuttering and reinforcement with complete design of concrete as per IS : 456 and relevant special publications, submission of job mix formula after preliminary mix design after testing of concrete cubes as per direction of Engineer-in charge. Consumption of cement will not be less than 300 Kg of cement with Super plasticiser per cubic meter of controlled concrete but actual consumption will be determined on the basis of preliminary test and job mix foumula. In ground floor and foundation. [using concrete mixture: M 20 Grade, Pakur Variety] (PWD Building Schedule Page No.: 24 Item: 5).

Controlled Cement concrete with well graded stone chips (20 mm nominal size) excluding shuttering and reinforcement with complete design of concrete as per IS : 456 and relevant special publications, submission of job mix formula after preliminary mix design after testing of concrete cubes as per direction of Engineer-in charge. Consumption of cement will not be less than 300 Kg of cement with Super plasticiser per cubic meter of controlled concrete but actual consumption will be determined on the basis of preliminary test and job mix foumula. In ground floor and foundation. [using concrete mixture: M 25 Grade, Pakur Variety] (PWD Building Schedule Page No.: 25 Item: 6).

Sand filling of vacant portion of DG foundation.

Reinforcement for reinforced concrete work in all sorts of structures including distribution bars, stirrups, binders etc initial straightening and removal of loose rust (if necessary), cutting to requisite length, hooking and bending to correct shape, placing in proper position and binding with 16 gauge black annealed wire at every intersection, complete as per drawing and direction. [For works in foundation and upto roof of ground floor/upto 4 m] Tor steel/Mild Steel (PWD Building Schedule Page No.: 25 Item: 6).

Plaster (to wall, floor, ceiling etc.) with sand and cement mortar including rounding off or chamfering corners as directed and raking out joints including throating, nosing and drip course, scaffolding/staging where necessary. (With 1:6 cement mortar, 20 mm thick plaster) [including cost of chipping over concrete surface]

Neat cement punning about 1.5mm thick in wall, dado, window sill, floor etc. NOTE:Cement 0.152 cu.m per100 sq.m. (PWD Building Schedule Page No.: 192 Item: 15)

M.S. structural works in roof trusses with tubular sections conforming to IS: 806-1968 & IS: 1161- 1998 cnnected to one another with bracket, gusset cleats as per design, direction of Engineer-in-charge complete including cutting to requisite size, fabrication with necessary metal arc welding conforming to IS: 816- 1969 & IS: 9595 using electrodes of approved make and brand conforming to IS:814- 2004, haulage, hoisting & erection and painting with two coats RO & two coats of synthetic paint, all complete. (PWD Building Schedule Page No.: 100 Item: 2)

Galvanised corrugated iron sheet work (excluding the supporting frame work) fitted and fixed with 10 mm. dia J or L hook-bolts, limpet and bitumen washers and putty complete with 150 mm. end lap and one corrugation minimum side lap. (Payment to be made on area of finished work)(GCI sheet to be supplied by contractor) [With 0.63 mm thick sheet] (PWD Building Schedule Page No.: 81 Item: 9/i/b)

Supply and pour of H.S. Diesel oil for necessary commissioning of new DG incl. transportation cost.

Supply & delivery PVC 200Ltr. Oil Barrel of thickness 6mm.

S&D of best quality oil hand pump

PVC pipe suitable for oil pumping to DG of length 10Mtr.

Supply delivery & errection of fabricated Exhaust Chimney upto the height of 30M of suitable diameter. It should be made with 16SWG 120GSM GI sheet in outside, suitable angle structure, inside cylindrical shap made with 2mm MS sheet and glass wool/suitable insulation between inside & outside sheet.

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