| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 510 x 580 x 900 mm | |
|---|---|---|
| Seat width | 510 mm | |
| Seat depth | 470 mm | |
| Seat height adjustment range | 550 mm | |
| Backrest height | 420 mm | |
| Backrest width | 460 mm | |
| Five-star base diameter | 640 mm | |
| Caster wheel diameter | 50 mm | |
| Seat cushion thickness | 60 mm | |
| Backrest padding thickness | 40 mm | |
| Bent plywood shell thickness | 18 mm | |
| Finished Seat Cushion Thickness | 90 mm | |
| Lumbar Support Zone Height | 240 mm | |
| Clear Width Between Armrests | 540 mm |
Net weight / load capacity / users / durability
| Recommended static load capacity | 200 kg | |
|---|---|---|
| Net weight reference | 13 kg | |
| Seat foam density | 45 kg/m³ | |
| Back foam density | 30 kg/m³ | |
| Foam rebound rate | 46% | |
| Foam compression set | 7% | |
| Base static load rating | 1200 kg | |
| Caster rolling durability | 98000 cycles | |
| Upholstery abrasion resistance | 50000 Martindale cycles | |
| Seam stitch pitch | 8 stitches per inch |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and back outer shell | 18mm thick E1-grade bent laminated plywood with natural oak wood veneer finish | |
|---|---|---|
| Seat and back upholstery | 1.5mm thick black polyurethane (PU) faux leather | |
| Seat cushion padding | 45kg/m³ high-density cold-cured polyurethane foam | |
| Backrest padding | 30kg/m³ flexible polyurethane foam | |
| Five-star base | 1.5mm thick polished chrome-plated steel | |
| Central gas lift | Chrome-plated steel Class 3 pneumatic cylinder | |
| Caster wheels | 50mm dual-wheel nylon casters with blue accent hubs and black rolling tread | |
| Control mechanism | 2.5mm thick steel tilt and height adjustment mechanism with side actuation lever | |
| Fasteners and hardware | Zinc-plated steel bolts, nuts and connection brackets | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame | |
| Tilt Mechanism Plate Thickness | 2.5 mm cold-rolled steel |
Adjustment / rotation / tilt / mobility / storage features
| 360-degree swivel rotation | Full 360° rotation around central gas lift axis for unrestricted turning at work surfaces | |
|---|---|---|
| Pneumatic seat height adjustment | 100mm vertical height adjustment via side-mounted lever, adjusting seat height between 440mm and 550mm to fit standard 760 mm high office desks | |
| Swivel tilt function | 12° backward seat tilt with adjustable tension control to match user weight, locking in upright position for focused work | |
| Smooth floor mobility | Dual-wheel nylon casters roll freely on hard tile, wood and low-pile carpet floors without surface scratching | |
| Waterfall seat edge design | Curved front seat edge reduces pressure on the back of thighs during extended seated work | |
| Integrated lumbar support | Angled bent backrest aligns with natural lumbar spine curve for supported upright sitting posture | |
| Armless compact design | No protruding armrests allows tucking fully under standard height desks to save space in compact work areas | |
| Knockdown assembly | Chair ships disassembled for reduced shipping volume, requiring simple attachment of casters, base and seat-back assembly with included tools | |
| Gas lift stroke length | 100 mm | |
| Recline Angle / Lock Reference | 125° with 3suggested lock positions | |
| Tilt Tension User-weight Range | Reference adjustment coverage 120 kg | |
| Rotation / Mobility Configuration | 360° swivel with 5-caster multidirectional movement |
Verified carton / gross weight / assembly / loading data
| Carton dimensions | 650 x 600 x 450 mm | |
|---|---|---|
| Gross weight per carton | 15 kg | |
| Packaging volume per unit | 0.18 CBM | |
| Inner packaging materials | 5mm thick EPE foam wrap, corner protectors and polybag protection for bentwood shell and chrome components | |
| Assembly time per unit | 20 minutes | |
| 40HQ container loading quantity | 500 pieces | |
| 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 |
Recommended spaces / users / usage modes
| Home office workstations | Compact armless design fits small desk spaces in residential home offices, tucks fully under desks when not in use to save floor space | |
|---|---|---|
| Open plan office task seating | Minimalist modern aesthetic and durable commercial-grade construction suit open-plan workstations and hot-desking environments | |
| Conference and meeting rooms | Sleek bentwood design provides consistent professional styling for small to medium conference rooms, with easy movement for collaborative discussion | |
| Makeup and vanity seating | Armless design and adjustable height suit use at vanity tables or dressing desks, with easy rolling for position adjustment | |
| Co-working shared spaces | Neutral black and natural wood finish complements diverse interior styles, with durable components to withstand frequent multi-user turnover | |
| Reception and guest waiting areas | Contemporary styling provides professional visitor seating, with swivel function for easy orientation to reception staff | |
| Student dormitory desk seating | Lightweight, compact size and easy assembly suit student desk use in dormitory rooms, with adjustable height to fit standard study desks | |
| Recommended Matching Desk Size | 2.4 m executive desk |
EU Market Access Requirements* EN Standards
| EN 1335-1:2020 | Office furniture - Office work chairs - Part 1: Dimensions - Determination of dimensions, applicable for verifying ergonomic seat and back dimensions | |
|---|---|---|
| EN 1335-2:2018 | Office furniture - Office work chairs - Part 2: Safety requirements, applicable for structural safety, stability and strength verification | |
| EN 1335-3:2009 | Office furniture - Office work chairs - Part 3: Test methods, applicable for conducting safety and durability performance tests | |
| EN 1021-1:2014 | Furniture - Assessment of the ignitability of upholstered furniture - Part 1: Ignition source smouldering cigarette, applicable for upholstery fire safety testing |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Office Chairs - Tests, applicable for evaluating general-purpose office chair strength, durability, stability and safety performance | |
|---|---|---|
| Gas lift endurance rating | 100000 cycles |
Standards applicable to China-market projects
| GB/T 3326-2016 | Furniture - Tables, chairs and stools for office use - Determination of dimensions, applicable for verifying dimensional conformance to office seating requirements | |
|---|---|---|
| GB/T 3327-2016 | Furniture - Tables, chairs and stools for office use - Determination of mechanical properties, applicable for static load, durability and stability testing | |
| GB 18584-2001 | Indoor decorating and refurbishing materials - Limit of harmful substances of wood based furniture, applicable for verifying formaldehyde emission from bent plywood shell | |
| GB/T 28204-2011 | Office swivel chairs, applicable for overall performance, safety and durability requirements for swivel office seating |
This product must meet the following technical requirements: 1. GB/T 3326-2016: Furniture - Tables, chairs and stools for office use - Determination of dimensions, applicable for verifying dimensional conformance to office seating requirements; 2. GB/T 3327-2016: Furniture - Tables, chairs and stools for office use - Determination of mechanical properties, applicable for static load, durability and stability testing; 3. GB 18584-2001: Indoor decorating and refurbishing materials - Limit of harmful substances of wood based furniture, applicable for verifying formaldehyde emission from bent plywood shell; 4. GB/T 28204-2011: Office swivel chairs, applicable for overall performance, safety and durability requirements for swivel office seating; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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