| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall outer dimension (quarter-circle full set) | 3600 x 1800 x 790 mm | |
|---|---|---|
| Single large segment outer arc length | 2830 mm | |
| Single nested small segment outer arc length | 1880 mm | |
| Seat height from floor | 450 mm | |
| Seat depth (front to back) | 980 mm | |
| Backrest height above seat | 340 mm | |
| Inner quarter-circle radius (innermost segment) | 1800 mm | |
| Upholstery seam stitch pitch | 30 mm | |
| Plinth base contact width | 100 mm | |
| Seat Cushion Thickness | 180 mm | |
| Back Cushion Thickness | 160 mm | |
| Leg Height / Floor Clearance | 160 mm |
Net weight / load capacity / users / durability
| Per-seat static load capacity | 150 kg | |
|---|---|---|
| Seat cushion foam density | 45 kg/m³ | |
| Backrest foam density | 35 kg/m³ | |
| Fabric abrasion resistance (Martindale) | 100000 cycles | |
| Foam rebound rate | 60% | |
| Single segment net weight | 85 kg | |
| Frame structural warranty | 25 years | |
| Soft parts (upholstery/foam) warranty | 5 years | |
| Per-seat occupant width | 730 mm | |
| Seat Foam Density / Rebound | 40 kg/m³ / 60% |
Core acceptance fields · Panels / hardware / frame / upholstery
| Internal frame structure | 18mm thick plywood and solid hardwood composite, kiln-dried to 12% moisture | |
|---|---|---|
| Seat cushion core fill | High-density polyurethane foam with 20mm soft fiber top wrap | |
| Backrest fill | Medium-density polyurethane foam, contoured to match curved panel shape | |
| Outer upholstery material | Matte light green abrasion-resistant polyester tech fabric, anti-fouling treated | |
| Fabric weight | 380 gsm | |
| Upholstery tension structure | Precision-cut fabric with hidden stitched seams over curved frame, no tufting | |
| Base plinth structure | Fully upholstered legless plinth with internal reinforcement, no exposed hard legs | |
| Modular connection hardware | Powder-coated steel clip and hook connectors between adjacent segments | |
| Fabric finish | Stain-resistant matte finish, suitable for alcohol-based disinfection | |
| Timber Frame Section / Moisture | Primary section ≥30 × 50 mm; recommended moisture 12% | |
| Spring / Webbing Specification | Sinuous spring wire 4 mm; elastic webbing 70 mm wide | |
| Leg Connector Specification | Reference M8-M10 with at least 1 mechanical fixing per leg |
Adjustment / rotation / tilt / mobility / storage features
| Modular configuration flexibility | Segments connect via hidden clips to form full circles, semicircles, or linear arcs | |
|---|---|---|
| Nested concentric arrangement | Tiered concentric seating layouts enabled by matched radii of different segments | |
| Stackable storage feature | Smaller segments nest inside larger units to reduce storage volume by 60% | |
| No-tool assembly | Segments connect via pre-installed clips without tools, 2-person setup required | |
| Maintenance access | Hidden zippers allow removal of upholstery covers for professional cleaning | |
| Power integration compatibility | Pre-molded internal channels support optional USB/power outlet retrofits | |
| Floor protection | Hidden non-slip felt pads on plinth base prevent floor scratching | |
| Edge safety design | All seat and back edges are rounded with 50mm radius to eliminate sharp impact points | |
| Cushion Service Configuration | Recommended 2removable/replaceable cushion methods |
Verified carton / gross weight / assembly / loading data
| Reference Package Count | 1 set / 2 cartons | |
|---|---|---|
| Reference Assembly Time | 40 minutes per set | |
| Reference Module Carton Dimensions | 2200× 1050× 850 mm | |
| Reference Packaging Volume | 1.8 m³/item | |
| Reference Packaged Gross Weight | 110 kg/item |
Recommended spaces / users / usage modes
| Office reception lobbies | Curved tiered form creates inviting grouped seating for visitor waiting areas | |
|---|---|---|
| Co-working space lounge zones | Reconfigurable segments support flexible group collaboration or casual individual work | |
| Public institution waiting areas | Durable cleanable fabric and high load rating suit high-traffic government/healthcare spaces | |
| Hotel lobby lounge areas | Sleek minimalist curved form complements contemporary hospitality interior design | |
| Educational institution common areas | Rounded edges and modular layout suit student gathering spaces in universities/libraries | |
| Exhibition and event spaces | Stackable nested design allows fast reconfiguration and compact storage between events | |
| Children’s activity zones (optional soft vinyl cover) | Rounded soft edges and cleanable surfaces suit supervised public play areas |
EU Market Access Requirements* EN Standards
| EN 13761:2002 | Applies to safety, strength and durability requirements for non-domestic seating | |
|---|---|---|
| EN 1021-1:2014 | Applies to upholstered furniture ignitability resistance (smoldering cigarette) |
US and Canada office-furniture standards
| ANSI/BIFMA X5.4-2021 | Applies to performance requirements for lounge and public area seating |
|---|
Standards applicable to China-market projects
| GB/T 3324-2017 | Applies to general technical requirements for wooden frame furniture strength and stability | |
|---|---|---|
| GB 18584-2001 | Applies to limit of harmful substances in wooden furniture for indoor use | |
| GB/T 19889.6-2005 | Applies to acoustic performance rating for public space furniture |
This product must meet the following technical requirements: 1. GB/T 3324-2017: Applies to general technical requirements for wooden frame furniture strength and stability; 2. GB 18584-2001: Applies to limit of harmful substances in wooden furniture for indoor use; 3. GB/T 19889.6-2005: Applies to acoustic performance rating for public space furniture; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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