| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| overall dimensions | 580 x 580 x 900 mm | |
|---|---|---|
| seat diameter | 580 mm | |
| seat height from floor | 495 mm | |
| seat cylinder height | 320 mm | |
| seat cushion top thickness | 80 mm | |
| backrest height above seat | 405 mm | |
| backrest curved width | 560 mm | |
| metal frame tube diameter | 20 mm | |
| base ring diameter | 570 mm | |
| vertical back support bar count | 3 units | |
| floor clearance under seat | 0 mm | |
| seam stitch pitch on upholstery | 8 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 | 15 kg | |
|---|---|---|
| recommended static load capacity | 250 kg | |
| seat foam density | 45 kg/m³ | |
| seat foam rebound rate | 45% | |
| upholstery abrasion resistance | 50000 cycles | |
| metal frame static load rating | 300 kg | |
| available color options | 6 variants | |
| limited warranty period | 1 year | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ |
Core acceptance fields · Panels / hardware / frame / upholstery
| seat outer upholstery | 0.8mm thick cream PU faux leather, stain-resistant, easy-wipe surface | |
|---|---|---|
| seat internal filling | High-density polyurethane foam, fully wrapped in non-woven fabric liner | |
| backrest upholstery | Matching cream PU faux leather over curved foam padding | |
| support frame | 1.2mm thick black powder-coated carbon steel tube, rust and scratch resistant | |
| circular base ring | Matching powder-coated carbon steel tube, fully welded to vertical supports | |
| internal seat support panel | 9mm thick multilayer plywood board, secured to frame with metal screws | |
| frame floor contact pads | 5mm thick non-slip PE plastic pads, prevent floor scratching | |
| frame weld joints | Fully ground and smooth welded joints, powder-coated to match frame finish | |
| 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
| seating function | Fixed-position armless seating for dining or accent use, no rotation or tilt | |
|---|---|---|
| folding capability | Non-folding rigid welded frame structure, permanent fixed form | |
| height adjustment | Fixed 495mm seat height, no gas lift or height adjustment mechanism | |
| back support function | Curved half-backrest provides upper lumbar support for upright dining posture | |
| floor protection | Inlaid plastic foot pads reduce friction and prevent hard floor scuffing | |
| cleaning function | Smooth faux leather surface supports wipe-clean maintenance for spills | |
| space efficiency | Compact circular footprint fits small dining nooks, cafe tables, or vanity desks | |
| 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
| 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
| residential dining room | Pairs with 4-seat round or rectangular dining tables for daily meal use | |
|---|---|---|
| cafe and bistro seating | Suitable for small commercial cafe tables, lightweight for easy repositioning | |
| home vanity or dressing area | Fits compact vanity desks for makeup and grooming use, armless design saves space | |
| small apartment accent seating | Works as spare side seating in living rooms or entry nooks, minimalist style matches modern decor | |
| boutique reception area | Suitable for boutique studio or office reception waiting seating, easy to clean | |
| hotel guest room seating | Fits hotel room desk or corner seating configurations, consistent modern aesthetic | |
| 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 12520:2015 | Domestic furniture strength, durability and safety requirements for seating | |
|---|---|---|
| EN 1022:2018 | Domestic furniture seating stability test methods for upright chairs | |
| EN 13356:2018 | Impact resistance requirements for non-upholstered and upholstered furniture frames |
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for wooden furniture, applicable for internal plywood structural components | |
|---|---|---|
| GB/T 24821-2009 | Performance requirements for metal furniture frames, applicable to steel tube structure | |
| GB 18584-2001 | Indoor decoration material formaldehyde emission limit for wooden furniture components | |
| GB/T 39223.2-2020 | Seating furniture stability and mechanical performance test methods for home use |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for wooden furniture, applicable for internal plywood structural components; 2. GB/T 24821-2009: Performance requirements for metal furniture frames, applicable to steel tube structure; 3. GB 18584-2001: Indoor decoration material formaldehyde emission limit for wooden furniture components; 4. GB/T 39223.2-2020: Seating furniture stability and mechanical performance test methods for home use; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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