| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| 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
| Single unit net weight | 38 kg | |
|---|---|---|
| Seat static load capacity | 150 kg | |
| Seating capacity per 3-seat row | 3 users | |
| Expected service life | 10 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 | |
| Five-star Base Static Load Reference | Acceptance target ≥120 kg; chair reference load 150 kg | |
| Caster Rolling Durability Reference | Acceptance target 30000 cycles | |
| Gas-lift Cycling Reference | Acceptance target 100000 cycles |
Core acceptance fields · Panels / hardware / frame / upholstery
| Writing tablet surface | 18mm thick melamine-faced particleboard | |
|---|---|---|
| Seat and back cushions | 40mm high-density polyurethane foam | |
| Support frame and legs | 2mm thick powder-coated cold-rolled steel | |
| Side modesty panels | 12mm thick wood-composite panel with black edge banding | |
| Upholstery fabric | 280g/m2 polyester woven fabric | |
| Floor mounting plates | 3mm thick galvanized steel | |
| Edge trim | PVC edge banding | |
| Under-seat support bracket | Welded steel tube with black powder coat | |
| 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 | |
| Tilt Mechanism Plate Thickness | 2.5 mm cold-rolled steel |
Adjustment / rotation / tilt / mobility / storage features
| Fixed writing tablet | Permanently attached rigid surface positioned for seated writing use | |
|---|---|---|
| Fixed floor mounting | T-base legs secured to finished floor via anchor bolts | |
| Integrated side modesty dividers | Curved panels between seats to separate adjacent users | |
| Contoured upholstered seat and back | Ergonomically shaped cushions for extended seated comfort | |
| Row-based modular installation | Units connect in continuous straight rows for stepped lecture hall floors | |
| Cable access under tablet | Integrated recess for laptop power cord routing | |
| 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 installation on stepped risers for large-class teaching | |
|---|---|---|
| Corporate training rooms | Fixed seating with writing tablets for long-duration training sessions | |
| Conference auditoriums | Continuous row seating for public presentations and meetings | |
| Government briefing rooms | High-traffic fixed seating for regular official meetings | |
| School multimedia classrooms | Seating with integrated writing surface for note-taking during lessons | |
| 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
| Office furniture strength | EN 16139:2013 | |
|---|---|---|
| Upholstered furniture flammability | EN 1021:2014 | |
| Furniture surface durability | EN 12720:2013 |
US and Canada office-furniture standards
| Seating static load | ANSI/BIFMA X2017 | |
|---|---|---|
| Chair stability | ANSI/BIFMA X2017Clause 7 |
Standards applicable to China-market projects
| Seating structural safety | GB/T 3324 | |
|---|---|---|
| Metal frame durability | GB/T 3325 | |
| Public seating safety | GB 28007 |
This product must meet the following technical requirements: 1. Seating structural safety: GB/T 3324; 2. Metal frame durability: GB/T 3325; 3. Public seating safety: GB 28007; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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