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Tender For corrigendum : supply of boq1 boq1 - the overall size of chair shall be : width 660mm , depth 660mm & height 1250 to 1350 mm. seat size shall be : width 490mm, actual depth520mm, effective depth 430mm and height 475mm to 575mm. width of the back shall be 425mm at bottom & lumbar level 440mm & min480mm at shoulder level. back height shall be 690mm as measured from seat level. the chair shall be supplied with high quality mesh at theback. back outer shall be injection moulded with nylon gf30% material. seat should be made up of foam pre moulded at 55 kg/m3 density &hardness of 25+ 3kgf at 50% deflection conforming to is 3400.the chair shall be supplied with dynaflex two piece back construction withis20d mesh upholstred. back shall be provided with 260mm width, 160mm height and 50mm height adjastable headrest thickness of seatfoam shall be 55 mm. seat shall be upholstered with micro fabric 100% polyster 180 gsm having abrasion > 50000 cycles fire rated fabricconfirming to bs en 1021. plywood used shall be 12mm thick 9 ply hot pressed. the chair should be provided with synchro tilt mechanism(bio snchyro mechansim) allowing 360 degree revolving movement along with height adjustablility & tilt tension. the mechansim shall allowseat to back recline ratio of 2:5. the gas lift used shall be class 4 tested as per ansi bifma standards. height adjustable arms to be proviedoperated through button made of delrin p 500. arm pad material shall be polyurethane with 2mm metal insert. nylon base having pcd of660mm five pronged base made up of pa6, 30% glass filled reincforced with bottom ribbing to be provided. 50mm dia twin castors with pa6material to be provided.tolerance of +/- 5mm to be considered for product sizes i.e length, depth & height and tolerance of 5% to beconsidered in pipe thickness & pipe sizes. , the overall size of chair shall be, total height 855mm, width 620mm,depth 550mm, seat depth 470mm seat width 475mm seat to back height440 and back width shall be 460mm. seating height shall be 460mm.seat should be made up of foam pre moulded at 55 kg/m3 density.hardness of 25+ 3kgf at 50% deflection conforming to is 3400. seat shall be uplhostered with micro fabric 100% polyster 180 gsm abrasion >50000 cycles. no flamming or progressive smoldering within one hour of placement of the cigarettes. fire rated fabric confirming to bs en1021 (match) should be used.the back frame design shall be made from 14g bright steel rod in an exclusive profile for sturdiness andergonomic comfort. the steel frame shall be powder coated to 40-50 microns. the back frame shall offered in special mesh finish in black &grey finish. upholstered with an-70 (black) / an-75 (grey) mesh. special design mesh 100% polyester with 320 gsm. abrasion resistance ->50000 confirming to iso 12947-2. chair shall have fixed armrest with size of 190mm made of with nylon 30% gf.the frame shall be made outof erw tubes with 25 mm diameter with 2.1 mm thickness pipe conforming to is 4923. frame shall be welded by co2 welding process foruniform finish conforming to is 816.frame shall offered with powder coat finish to provide an attractive finish. it shall be in black colour. thepowder coating pre-treatment shall carried out with three in one chemical. after pre-treatment process, the components shall powdercoated for better adhesion of paint. the frames shall powder coated with epoxy polyester powder to the thickness of 40-60 microns as per is101 and oven baked at 180.leg bush shall be provided molded with ppcp.tolerance of +/- 5mm to be considered for product sizes i.elength, depth & height and tolerance of 5% to be considered in pipe thickness & pipe sizes., the overall size of the centre table shall be dia 600mm, 450 mm height. the table top shall be made up of 18mm thick prelaminated particleboard of approved shade all the edges of discussion surface shall be provided with machine pressed 2mm thick pvc lipping glued withhotmelt eva glue
18 Mar, 2025
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