| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 350 x 350 x 450 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
| Product net weight | 3 kg | |
|---|---|---|
| Static vertical seat load capacity | 150 kg | |
| Stacking height per nested stool | 50 mm | |
| Seat cushion compression recovery rate | 92% | |
| Frame static load test rating | 200 kg | |
| Recommended maximum continuous use duration | 8 hours | |
| 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
| Structural frame | 1.2mm thick Q235 steel tube, black matte powder-coated finish | |
|---|---|---|
| Seat upholstery surface | 0.8mm thick black faux leather, stain-resistant smooth finish | |
| Seat cushion core | 30kg/m³ high-resilience polyurethane foam, 40mm total thickness | |
| Frame joint construction | MIG-welded joints, ground smooth with matching powder touch-up | |
| Seat to frame attachment | Cross-head steel screws through frame top rail into seat base plate | |
| Under-seat base board | 12mm thick MDF support board under foam core | |
| Frame bottom foot pads | 5mm thick non-slip PE plastic foot pads, floor protection | |
| 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
| Nesting stackable storage | Fully stackable up to 10 stools for compact storage | |
|---|---|---|
| Fixed non-swivel seat | Rigid fixed seat connection to frame with no rotation or tilt | |
| Floor scratch protection | Integrated foot pads prevent hard metal contact with finished floors | |
| Quick assembly requirement | Knock-down design requiring only 4 screws to attach seat to frame | |
| Multi-surface use suitability | Stable on hard floors and low-pile carpet with no caster attachments | |
| 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
| Office visitor waiting areas | Compact stackable design for flexible high-traffic temporary seating space | |
|---|---|---|
| Dining area supplementary seating | 450mm seat height matches standard dining and conference table heights | |
| Temporary event seating | Lightweight stackable structure for fast setup and teardown at events | |
| Small apartment multi-use seating | Slim open frame occupies minimal floor space for compact living areas | |
| Break room casual seating | Durable faux leather surface resists spills and wipes clean easily | |
| 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
| Safety standard reference | EN 12520:2015 Furniture - Strength, durability and safety for domestic seating | |
|---|---|---|
| Surface finish reference | EN 1022:2019 Domestic furniture - Seating - Determination of stability |
Standards applicable to China-market projects
| Recommended applicability | GB/T 3324General technical requirements for metal furniture | |
|---|---|---|
| Seating performance reference | GB/T 10357.3Test methods for furniture: Mechanical properties of seats |
This product must meet the following technical requirements: 1. Recommended applicability: GB/T 3324General technical requirements for metal furniture; 2. Seating performance reference: GB/T 10357.3Test methods for furniture: Mechanical properties of seats; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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