| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions per seat (open) | 580 x 720 x 1040 mm | |
|---|---|---|
| Seat height from finished floor | 460 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
| Net weight per single seat unit | 22 kg | |
|---|---|---|
| Recommended static user weight capacity | 150 kg | |
| Seat cushion foam density | 55 kg/m³ | |
| Back foam density | 40 kg/m³ | |
| Foam rebound rate | 52% | |
| Upholstery fabric abrasion resistance | 50000 cycles | |
| Powder coat salt spray resistance | 18 h | |
| Seat return mechanism cycle life | 100000 cycles | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and back upholstery | Blue woven commercial polyester fabric | |
|---|---|---|
| Seat cushion padding | High-density cold-cured molded polyurethane foam | |
| Backrest padding | Contoured high-resilience cold-cured polyurethane foam | |
| Armrest top surfaces | Stained solid beech/oak wood with polished varnish | |
| Armrest support frames | 1.6mm thick cold-rolled steel with black electrostatic powder coat | |
| Rear seat back panel | 15mm thick multilayer plywood with mahogany veneer, perforated acoustic holes | |
| Floor pedestal and mounting base | 2mm thick welded steel with black powder coating | |
| Internal seat support frame | Reinforced welded steel frame with anti-rust phosphating treatment | |
| Seat return mechanism | Torsion spring with hydraulic damper for quiet automatic tip-up | |
| Edge trim and caps | Black injection-molded PP impact-resistant plastic covers | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame |
Adjustment / rotation / tilt / mobility / storage features
| Floor mounting system | Fixed anchoring to concrete floor via expansion bolts with anti-theft caps | |
|---|---|---|
| Ganged row configuration | Interconnected adjacent seats sharing intermediate armrests for straight row layout | |
| Automatic tip-up seat | Spring-damper actuated quiet seat return to vertical position when unoccupied | |
| Acoustic perforated back panel | Uniform perforations on rear wood panel reduce echo and improve venue acoustics | |
| Seat numbering provision | Mounted seat identification plate on rear panel for row and number marking | |
| Ergonomic back support | 12° fixed recline angle with lumbar contour for long-duration seated events | |
| Interchangeable fabric color option | Fabric upholstery available in custom colors to match venue interior design | |
| Optional retractable writing tablet | Concealed fold-out writing surface available as an add-on mounted in armrest assembly | |
| 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
| Per-carton dimensions | 750 x 650 x 1050 mm | |
|---|---|---|
| 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
| Lecture hall and university auditorium use | Fixed row seating optimized for long-duration classes and presentations | |
|---|---|---|
| Corporate conference hall and assembly venue use | Formal upholstered wood-trim seating suitable for company meetings and events | |
| Theater and performing arts center use | Acoustic perforated back panel supports venue sound quality and audience comfort | |
| Government and public institution meeting room use | Durable construction and fixed floor anchoring suit high-traffic public facilities | |
| School multi-purpose hall and ceremony venue use | Sturdy ganged structure resists heavy daily student use for assemblies and events | |
| Church and large congregation worship space use | Quiet seat return minimizes disruption during services and events | |
| 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 12727:2016 | Applicable European standard for strength/durability of tiered public seating | |
|---|---|---|
| EN 1022:2018 | Applicable standard for seating stability verification for fixed public assembly chairs |
US and Canada office-furniture standards
| ANSI/BIFMA X5.11-2015 | Applicable standard for large-person public seating static and dynamic load testing |
|---|
Standards applicable to China-market projects
| GB/T 3325-2017 | Applicable standard for metal furniture general technical requirements, relevant for steel frame and pedestal | |
|---|---|---|
| GB 18584-2001 | Applicable standard for formaldehyde emission limits on wood-based panel furniture components | |
| GB 28481-2012 | Applicable standard for restricted substances in plastic furniture parts and edge components |
This product must meet the following technical requirements: 1. GB/T 3325-2017: Applicable standard for metal furniture general technical requirements, relevant for steel frame and pedestal; 2. GB 18584-2001: Applicable standard for formaldehyde emission limits on wood-based panel furniture components; 3. GB 28481-2012: Applicable standard for restricted substances in plastic furniture parts and edge components; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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