| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall unit dimensions (per seat) | 640 x 780 x 1040 mm | |
|---|---|---|
| Seat center-to-center distance | 640 mm | |
| Floor to finished seat surface height | 450 mm | |
| Seat usable width (between armrests) | 505 mm | |
| Seat usable depth (seat front to back) | 460 mm | |
| Finished armrest top surface height | 630 mm | |
| Armrest top surface width | 66 mm | |
| Fold-down writing tablet usable depth | 250 mm | |
| Overall depth with writing tablet fully deployed | 860 mm | |
| Minimum required row-to-row spacing | 1000 mm | |
| Backrest total height (seat surface to top) | 590 mm | |
| Floor mount foot plate length | 180 mm | |
| Finished Seat Cushion Thickness | 90 mm | |
| Backrest Padding Thickness | 70 mm | |
| Lumbar Support Zone Height | 240 mm | |
| Clear Width Between Armrests | 540 mm |
Net weight / load capacity / users / durability
| Per-seat net weight | 25 kg | |
|---|---|---|
| Maximum recommended static user load per seat | 150 kg | |
| Seat and back foam density | 60 kg/m³ | |
| Foam resilience (rebound rate) | 45% | |
| Seat cushion padding thickness | 80 mm | |
| Backrest padding thickness | 60 mm | |
| Fabric upholstery abrasion resistance (Martindale) | 50000 cycles | |
| Upholstery fabric thickness | 0.8 mm | |
| Seat return mechanism cycle life | 100000 cycles | |
| Structure static load rating per support leg | 800 kg |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and back upholstery | Woven polyester fabric, blue color, commercial grade | |
|---|---|---|
| Seat cushion core | Cold-molded high-density PU foam, 80mm thickness | |
| Backrest cushion core | Contoured cold-molded PU foam, 60mm thickness | |
| Armrest tops | Solid hardwood, red stained and lacquered finish | |
| Support frame and legs | 2.0mm thick cold-rolled steel, black powder-coated finish | |
| Writing tablet panel | 18mm thick perforated MDF, red lacquered finish | |
| Tablet hinge hardware | Zinc-plated steel hinge with polymer friction bushing | |
| Seat return mechanism | Steel torsion spring with rubber damping bumper | |
| Seat/back inner support shell | Injection-molded PP structural shell | |
| Floor anchor fasteners | Galvanized steel expansion bolts, M10 diameter | |
| Seam construction | Reinforced polyester stitching, 8 stitches per 30mm | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board |
Adjustment / rotation / tilt / mobility / storage features
| Seat tip-up operation | Gravity-activated automatic return to upright stored position when unoccupied | |
|---|---|---|
| Writing tablet deployment | Fold-down from stored vertical position between seats to horizontal working height | |
| Tablet anti-panic release | Automatic upward fold if excess upward force is applied | |
| Ganged row connection | Rigid steel linking brackets between adjacent seats | |
| Floor-mounted installation | Permanent bolt-down fixing to venue floor, no movable casters | |
| Upholstery maintenance | Surface-cleanable anti-stain fabric finish | |
| Acoustic damping | Rubber gaskets at all moving pivot points | |
| Optional accessory mounting | Pre-drilled mounting points for seat number plates and cup holders | |
| Recline Angle / Lock Reference | 125° with 3suggested lock positions | |
| Tilt Tension User-weight Range | Reference adjustment coverage 120 kg | |
| Height Adjustment Stroke | 100 mm continuous travel | |
| Rotation / Mobility Configuration | 360° swivel with 5-caster multidirectional movement |
Verified carton / gross weight / assembly / loading data
| Reference Package Count | 1 set / 2 cartons | |
|---|---|---|
| Reference Assembly Time | 40 minutes per set | |
| Reference Carton Dimensions | 850× 420× 720 mm | |
| Reference Packaged Gross Weight | 23 kg/set | |
| Reference Carton Volume | 0.26 m³/set | |
| Indicative 20GP Loading | 135 sets at 85% space utilization | |
| Indicative 40HQ Loading | 320 sets at 85% space utilization |
Recommended spaces / users / usage modes
| University lecture halls | Fixed row seating with writing tablet supports note-taking and exam use | |
|---|---|---|
| Corporate conference and training centers | Durable commercial construction suits frequent multi-day event use | |
| Theater and performing arts venues | Ergonomic contoured back provides comfort for multi-hour performances | |
| Government and public assembly halls | Fixed floor installation meets public assembly safety and capacity requirements | |
| School auditoriums and multi-purpose halls | Ganged configuration maximizes seating capacity with clear aisle access | |
| Cinema premium seating with note-taking needs | Upholstered padding works for extended screen viewing sessions | |
| Recommended Matching Desk Size | 2.4 m executive desk | |
| Reference Daily Use Duration | 8 hours/day; confirm by ergonomic testing |
EU Market Access Requirements* EN Standards
| EN 12727:2000 | Furniture - Seating for auditoriums, test methods and minimum strength requirements | |
|---|---|---|
| EN 1021-1:2014 | Upholstered furniture flammability resistance to smoldering cigarette ignition | |
| EN 1021-2:2014 | Upholstered furniture flammability resistance to match flame ignition | |
| EN 13722:2004 | Furniture - Test methods for assessment of surface resistance to cold liquids |
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for wooden furniture, applicable to wood armrest components | |
|---|---|---|
| GB/T 35607-2017 | Green product evaluation for furniture, applicable to formaldehyde and VOC limits | |
| GB 20286-2006 | Flame retardant performance requirements for public venue upholstered furniture | |
| GB/T 10357.3-2013 | Furniture mechanical performance test for seating, applicable to strength and durability testing |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for wooden furniture, applicable to wood armrest components; 2. GB/T 35607-2017: Green product evaluation for furniture, applicable to formaldehyde and VOC limits; 3. GB 20286-2006: Flame retardant performance requirements for public venue upholstered furniture; 4. GB/T 10357.3-2013: Furniture mechanical performance test for seating, applicable to strength and durability testing; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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