| 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
| Unit net weight | 48 kg | |
|---|---|---|
| Static load per seat | 150 kg | |
| Writing tablet static load | 25 kg | |
| Seat tip-up cycle rating | 20000 cycles | |
| Recommended row spacing (tiered) | 900 mm | |
| Floor anchoring pull-out resistance | 8 kN | |
| 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 |
Core acceptance fields · Panels / hardware / frame / upholstery
| Support frame | 3mm thick cold-rolled steel, grey powder-coated finish | |
|---|---|---|
| Backrest panel | 1.5mm perforated cold-rolled steel, grey powder-coated | |
| Seat pan | 12mm thick plywood with matte yellow laminate finish | |
| Writing tablet | 15mm thick MDF with light oak laminate, steel folding hinge | |
| Armrest pads | Soft polyurethane padding, matte black finish | |
| Seat pivot hinge | Die-cast aluminum alloy with steel axle, corrosion-resistant finish | |
| Floor mounting feet | 10mm thick stamped steel with pre-drilled anchor holes | |
| Tablet support struts | Solid round steel bars, black powder-coated | |
| 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
| Automatic seat tip-up | Seat folds upward via gravity when unoccupied to clear aisle space | |
|---|---|---|
| Folding writing tablet | Tablet rotates vertically to stow flush against back when not in use | |
| Fixed row installation | Units anchor permanently to tiered concrete or raised access floors via foot bolts | |
| Shared armrest design | Adjacent seats share one central armrest to maximize space efficiency | |
| Ventilated backrest | Perforated back panel allows air circulation for extended sitting comfort | |
| Noise-dampened pivot | Seat hinge includes rubber buffer to eliminate impact noise when folding | |
| 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 | Tiered fixed seating for long-duration classes, with writing tablets for note-taking | |
|---|---|---|
| Corporate training rooms | Fixed-row seating for staff training and seminar events with integrated work surfaces | |
| Small auditoriums | Compact two-seat units for venue layouts requiring flexible row configuration | |
| Conference center breakout rooms | Folding seats and tablets support multi-use event space turnaround | |
| Government meeting rooms | Durable public seating for public hearings and official assembly use | |
| 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 | Strength, durability and safety requirements for auditorium and public seating | |
|---|---|---|
| EN 1022:2018 | Seating stability test methods for fixed installed public seating | |
| EN 13722:2004 | Furniture hardware performance for folding seat and tablet mechanisms |
US and Canada office-furniture standards
| ANSI/BIFMA X5.11-2015 | General purpose office seating performance for heavy public use environments | |
|---|---|---|
| ANSI/BIFMA X5.5-2021 | Desk products performance applicable to integrated writing tablets |
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for wooden furniture, applicable to seat and tablet panels | |
|---|---|---|
| GB 28007-2011 | Safety requirements for children's and institutional public seating, applicable for campus lecture halls | |
| GB/T 19001-2016 | Quality management system guidance for public furniture manufacturing consistency |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for wooden furniture, applicable to seat and tablet panels; 2. GB 28007-2011: Safety requirements for children's and institutional public seating, applicable for campus lecture halls; 3. GB/T 19001-2016: Quality management system guidance for public furniture manufacturing consistency; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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