| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Per-seat center distance | 580 mm | |
|---|---|---|
| Overall per-seat unit size | 580 x 680 x 1080 mm | |
| Seat height above finished floor | 450 mm | |
| Seat usable depth | 460 mm | |
| Backrest total height above seat | 630 mm | |
| Armrest height above seat | 218 mm | |
| Side writing tablet dimensions | 268 x 238 x 15 mm | |
| Minimum recommended row pitch | 900 mm | |
| Floor mounting foot plate dimensions | 380 x 60 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 static load capacity | 200 kg | |
|---|---|---|
| Writing tablet vertical static load | 30 kg | |
| Seat impact resistance rating | 85 kg | |
| Recommended per-seat user weight | 150 kg | |
| Seat return mechanism cycle life | 50000 cycles | |
| Net weight per individual seat | 28 kg | |
| Standard product warranty period | 8 years | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ | |
| Upholstery Thickness / Abrasion Reference | 1.4 mm / 50000 cycles |
Core acceptance fields · Panels / hardware / frame / upholstery
| Primary support frame | 2.0mm thick cold-rolled steel, electrostatic powder-coated gray finish | |
|---|---|---|
| Seat core panel | 15mm thick fireproof HPL laminate over 11mm multi-layer plywood | |
| Backrest core panel | 15mm thick fireproof MDF panel with fabric upholstered inset | |
| Seat cushion padding | 110mm thick high-density cold-cure PU foam, 45kg/m³ density | |
| Backrest padding | 130mm thick high-density cold-cure PU foam, 40kg/m³ density | |
| Upholstery fabric | Abrasion-resistant polyester fabric, 50000 Martindale cycles, breathable | |
| Writing tablet | 15mm thick HPL fireproof board with PVC edge banding, aluminum alloy support arm | |
| Armrests | Integral molded PP caps over steel support brackets, matte gray finish | |
| Seat return mechanism | Torsion spring with hydraulic damper for quiet slow seat return | |
| Floor fixing hardware | M10 galvanized steel expansion bolts with plastic dust 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
| Automatic seat fold-up | Seat returns to vertical position via damped torsion spring when unoccupied, no manual operation required | |
|---|---|---|
| Side swing writing tablet | Tablet rotates out from side arm to horizontal use position, locks in place for writing/laptop use | |
| Floor-mounted fixed installation | Units are anchored to concrete tiered floors via expansion bolts, no movement after installation | |
| Ganged row connection | Adjacent seats connect via shared steel cross beams for unified row rigidity | |
| Rear modesty panel | Full-height rear panel acts as front barrier for the row behind, conceals under-seat space | |
| Upholstered back support | Contoured padded backrest provides lumbar support for 90-minute seated lecture duration | |
| Integral armrest separation | Dividing armrests between adjacent seats define individual seating spaces for occupancy comfort | |
| 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
| Tiered university lecture halls | Fixed row configuration with fold-up seats supports high-density scheduled class use | |
|---|---|---|
| Multimedia training rooms | Integrated writing tablets support note-taking and laptop use during training sessions | |
| Corporate conference auditoriums | Durable steel frame and easy-clean upholstery suit regular public event use | |
| Government meeting halls | Fixed floor mounting provides secure, stable seating for official proceedings | |
| School multimedia classrooms | Space-saving fold-up seats allow easy aisle access between class periods | |
| 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 1729-1:2015 | Furniture for educational institutions, seating strength and stability requirements | |
|---|---|---|
| EN 1022:2018 | Domestic and public seating stability test method | |
| EN 12727:2000 | Ranked seating for public venues mechanical performance requirements |
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for wooden furniture, applicable to panel components of seating | |
|---|---|---|
| GB/T 3325-2017 | General technical requirements for metal furniture, applicable to steel frame structure | |
| GB 20286-2006 | Fire performance requirements for public place furniture upholstery and panels | |
| GB/T 10357.3-2013 | Mechanical test methods for furniture seating strength and durability |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for wooden furniture, applicable to panel components of seating; 2. GB/T 3325-2017: General technical requirements for metal furniture, applicable to steel frame structure; 3. GB 20286-2006: Fire performance requirements for public place furniture upholstery and panels; 4. GB/T 10357.3-2013: Mechanical test methods for furniture seating strength and durability; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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