| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 480 x 540 x 870 mm | |
|---|---|---|
| Seat height | 460 mm | |
| Seat width | 445 mm | |
| Seat depth | 460 mm | |
| Backrest height above seat | 470 mm | |
| Top backrest width | 430 mm | |
| Front leg stance width | 480 mm | |
| Backrest lumbar curve depth | 30 mm | |
| Frame tube diameter | 19 mm | |
| Waterfall front edge overhang | 25 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 chair | 5 kg | |
|---|---|---|
| Static weight capacity | 400 kg | |
| Maximum vertical stack height | 10 chairs | |
| Shell material thickness | 5 mm | |
| Steel frame wall thickness | 1.5 mm | |
| Recommended daily usage cycle | 8 hours | |
| Floor glide contact diameter | 25 mm | |
| 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
| Seat and back shell | Injection-molded polypropylene (PP) with textured central anti-slip back panel | |
|---|---|---|
| Support frame | White powder-coated cold-rolled steel cantilever sled frame | |
| Floor glides | Non-marring nylon (PA) plastic glides attached to frame leg ends | |
| Backrest surface finish | Matte textured PP finish with raised vertical traction pattern | |
| Frame surface coating | Epoxy polyester powder coating with 60μm dry film thickness | |
| Shell edge finish | Rounded injection-molded edges with no sharp protrusions | |
| Seat underside support | Integrated molded PP ribbing for structural rigidity | |
| 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 | |
| Five-star Base Material Thickness | Metal base wall 3.5 mm; diameter 700 mm |
Adjustment / rotation / tilt / mobility / storage features
| Stacking capability | Vertical nesting stack of up to 10 chairs for compact storage | |
|---|---|---|
| Backrest carry function | Integrated dual cutout openings at seat-back junction for hand carrying | |
| Back support design | Ergonomic contoured backrest with raised lumbar curve and top lip support | |
| Seat comfort design | Contoured seat with waterfall front edge to reduce thigh pressure | |
| Ventilation feature | Open cutouts between seat and backrest for air circulation | |
| Structural flex characteristic | Cantilever frame provides controlled slight flex for seated comfort | |
| Floor protection | Fixed non-swivel glides that slide smoothly without scratching hard floors | |
| Ganging compatibility | Frame geometry supports optional linking clips for row seating | |
| 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
| Corporate training rooms | Stackable lightweight design for quick room reconfiguration between sessions | |
|---|---|---|
| Conference and meeting spaces | Armless minimalist profile fits large meeting tables with flexible seating arrangements | |
| Educational classroom settings | Durable PP shell withstands daily heavy student use with easy stack storage | |
| Event and seminar venues | Carry handle cutouts enable fast setup and teardown for temporary events | |
| Coworking common areas | Neutral turquoise and white aesthetic suits flexible open-plan shared workspaces | |
| Waiting and reception areas | Fixed stable sled base provides safe, low-maintenance guest seating | |
| 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 1728:2014 | Domestic and contract furniture seating mechanical test methods for strength and stability | |
|---|---|---|
| EN 16139:2013 | Non-domestic seating strength, durability and safety requirements for contract use |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | General purpose office chairs standard for static load and durability testing |
|---|
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for metal furniture, applicable to steel frame structural integrity | |
|---|---|---|
| GB/T 24821-2009 | General technical requirements for plastic furniture, applicable to PP shell safety and durability | |
| GB/T 10357.3-2013 | Furniture mechanical test for chair seating stability and static load performance |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for metal furniture, applicable to steel frame structural integrity; 2. GB/T 24821-2009: General technical requirements for plastic furniture, applicable to PP shell safety and durability; 3. GB/T 10357.3-2013: Furniture mechanical test for chair seating stability and static load performance; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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