Bharat Sanchar Nigam Limited Tender

Providing and placing in position Mid Back Chairs with the following broad specifications. 1)SEATASSEMBLY: The Cushioned seat should be made of Injection molded Plastic outer & inner. Plastic Inner should be upholstered with stitched cover and moulded High Resilience Polyurethane foam of Density 45±2 kg/m3,and hardness load 16 ± 2 kgf for 25% compression.The stitched cover should be made from spacer fabric and leatherette. Cushioned back should be made of PU Foam with insitu molded MS E.R.W Round Tube of size 1.9±0.03cm x 0.16 ±0.0128cm. It upholstered with spacer fabric and leatherette.Seat size 47.0cm.(W)x48.0cm. (D) 2)BACK ASSEMBLY: The Cushioned back is made of PU Foam with insitu molded MS E.R.W Round Tube of size 1.9±0.03cm x 0.16 ±0.0128cm. It upholstered with spacer fabric and leatherette.BACK SIZE : 45 cm. (W) x 60.5 cm. (D) 3)ARMRESTS : The armrest top should be moulded from polyurethane(PU) and mounted on to a drop lift adjustable type tubular armrest support made of 03.81±0.03 cm x 0.2±0.01 cm thk MS E.R.W tube. The armrest height adjustable up to 6.5±0.5cm in 5 steps.The Armrest structure should be powder coated (DFT 40-60 micron). 4)ACTIVE BIO-SYNCHRO mechanism : The adjustable tilting mechanism should be with the following features:• 360° revolving type.• Front-pivot for tilt with feet resting on ground and continuous lumbar support ensuring more comfort.• Tilt tension adjustment can be operated in seating position.• 5-position Tilt limiter giving option of variable tilt angle to the chair.• Seat/back tilting ratio of 1: 2• The mechanism housing should be made up of HPDC Aluminium black powder coated.5)SEAT DEPTH ADJUSTMENT Seat depth adjustment should be integrated in the seat through a sliding mechanism.

Seat depth adjustment range should be of 6.0±0.5 cm.4)ACTIVE BIO-SYNCHRO mechanism (FU3401/3402): The adjustable tilting mechanism should be with the following features:• 360° revolving type. • Front-pivot for tilt with feet resting on ground and continuous lumbar support ensuring more comfort. • Tilt tension adjustment can be operated in seating position. • 5-position Tilt limiter giving option of variable tilt angle to the chair. • Seat/back tilting ratio of 1: 2 • The mechanism housing should be made up of HPDC Aluminium black powder coated. 6) ADJUSTABLE BACK SUPPORT Back Frame should be connected to the Up/Dn mechanism housed in Plastic T spine. It can be adjusted in the range of 7.42±0.5 cm for the comfortable back support to suit individual need. 7)PNEUMATIC HT. ADJUSTMENTThe pneumatic ht adjustment has an adjustment stroke of 10.0±0.3 cm. 8)PNEUMATIC HT. ADJUSTMEVT (FU3401/3402): The pedestal is injection moulded in black 33% glass-filled Nylon 66 and fitted with 5 nos. twin wheel castors. The pedestal is 66.1±0.5cm. pitch-center dia.(76.1±1.0 cm. With castors.) 9) TWIN WHEEL CASTOR : 5 Nos. twin wheel castors should be injection moulded in plastic having 6.0±0.1cm wheel Diameter and assembled to pedestal of model Versa canvas of Godrej make / equivalent model of HNI / STEEL CASE or any approved equivalent reputed make as approved by the Engineer-in-charge.

Dismantling aluminium partitions, doors and other frames including proper numbering, loading and unloading and stacking by placing at the required place in the building premises etc. all operations complete as directed by the Engineer-in-charge . (Area of partition dismantled is measured for payment)

Making and fixing of aluminum partitions and doors in position including sorting available material of aluminum sections, particle boards, glass panels, gaskets and snap on beading as per the approved drawing including fixing with rawl plugs, screws etc and filling of gaps if any at junctions with wall with sealant wherever required all complete as per the specifications and as per the directions of the Engineer-in-charge. Necessary screws,clamps,rawl plugs shall be arranged for fixing partitions . The available aluminium sections, glass, boards,gaskets and snap on beading will be supplied by the department at no cost. Area of erected partition having board/glass panels/grill only shall be measured for payment