| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall unit dimensions | 1240 x 760 x 1020 mm | |
|---|---|---|
| Per-seat center width | 620 mm | |
| Seat height from finished floor | 460 mm | |
| Seat usable depth | 470 mm | |
| Backrest height above seat surface | 560 mm | |
| Armrest height above seat surface | 220 mm | |
| Minimum required row-to-row spacing | 950 mm | |
| Floor base plate dimensions | 180 x 80 mm | |
| Armrest top width | 80 mm | |
| Backrest width per seat | 490 mm | |
| Leg vertical support tube section | 60 x 30 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 2-seat unit | 48 kg | |
|---|---|---|
| Maximum static load per seat | 150 kg | |
| Seat cushion foam density | 55 kg/m³ | |
| Backrest foam density | 50 kg/m³ | |
| Foam rebound rate | 45% | |
| Upholstery fabric abrasion resistance | 50000 double rubs | |
| Tip-up seat cycle durability (if fitted) | 200000 cycles | |
| Recommended maximum user weight per seat | 150 kg | |
| Standard warranty period for structural components | 8 years | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and back upholstery | Commercial woven polyester fabric, stain-resistant, antistatic finish | |
|---|---|---|
| Seat cushion padding | Cold-cured high-resilience polyurethane foam, 55 kg/m³ density | |
| Backrest padding | Cold-cured high-resilience polyurethane foam, 50 kg/m³ density | |
| Armrest tops and side panels | Dark-stained solid beech wood, clear polyurethane lacquer finish | |
| Support frame and legs | 2mm thick Q235 rectangular steel tubing, black electrostatic powder coat | |
| Seat and back inner shell | 5mm thick modified polypropylene (PP) engineering plastic, perforated acoustic backing | |
| Pivot hardware (if tip-up seat fitted) | 45# steel rotating shaft with self-lubricating nylon bushings | |
| Floor mounting hardware | Galvanized steel expansion bolts, black plastic end caps for exposed bases | |
| Seam stitching | High-tenacity polyester thread, 8 stitches per 30mm seam pitch | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame | |
| Gas-lift Engineering Specification | Recommended Class 4; outer tube 50 mm; stroke 100 mm |
Adjustment / rotation / tilt / mobility / storage features
| Installation method | Permanent floor bolting via T-shaped steel base plates, ganged into continuous rows | |
|---|---|---|
| Seat action (if configured) | Gravity-return automatic tip-up seat to clear row passage when unoccupied | |
| Ganging alignment | Interlocking steel brackets connect adjacent units to maintain uniform row spacing | |
| Acoustic performance | Perforated rear seat shell provides sound absorption to reduce venue echo | |
| Customization option: Upholstery color | Red standard; custom fabric colors available to match venue interior design | |
| Customization option: Accessories | Optional writing tablets, seat/row numbering, book nets, cup holders available per order | |
| Fire safety option | B1 flame-retardant fabric and foam treatment available for public assembly code compliance | |
| Floor protection | Concealed bolt caps cover floor anchor points to prevent trip hazards and finish damage | |
| 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
| Primary venue: Auditoriums and lecture halls | Fixed row seating with upright ergonomic backrests for long-duration viewing | |
|---|---|---|
| Primary venue: Conference and assembly halls | Ganged continuous layout with formal dark wood trim for formal meeting spaces | |
| Primary venue: School and university lecture theaters | Durable high-traffic construction for daily student use, ganged row layout | |
| Venue requirement: Permanent fixed seating installations | Bolt-down design prevents movement and maintains orderly row alignment | |
| Target user: Adult venue occupants | Seat dimensions and load rating aligned with standard adult anthropometrics | |
| Recommended configuration: Continuous multi-row layouts | Interlocking ganging allows extension to any required row length | |
| 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 13761:2002 | Performance requirements for auditorium and public assembly seating | |
|---|---|---|
| EN 1021-1/2:2014 | Upholstered furniture flammability resistance test standards | |
| EN 16139:2013 | Strength, durability and safety requirements for non-domestic seating |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | General purpose office and public chair durability and safety test standard |
|---|
Standards applicable to China-market projects
| GB 20286-2006 | Requirements for flame retardant performance of public place furniture and components | |
|---|---|---|
| GB/T 3324-2017 | General technical requirements for wooden furniture components and finish durability | |
| GB/T 10357.3-2013 | Test method for strength and durability of chair seating surfaces and backrests | |
| GB 50763-2012 | Accessibility design code for public assembly seating clearances |
This product must meet the following technical requirements: 1. GB 20286-2006: Requirements for flame retardant performance of public place furniture and components; 2. GB/T 3324-2017: General technical requirements for wooden furniture components and finish durability; 3. GB/T 10357.3-2013: Test method for strength and durability of chair seating surfaces and backrests; 4. GB 50763-2012: Accessibility design code for public assembly seating clearances; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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