| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 520 x 520 x 900 mm | |
|---|---|---|
| Seat height | 480 mm | |
| Seat width | 480 mm | |
| Seat depth | 450 mm | |
| Seat cushion thickness | 152 mm | |
| Backrest total height from seat | 420 mm | |
| Backrest width at upper rail | 520 mm | |
| Leg taper diameter at floor | 30 mm | |
| Leg vertical height | 450 mm | |
| Rear stile width | 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 | 12 kg | |
|---|---|---|
| Recommended static load capacity | 180 kg | |
| Seat foam density | 45 kg/m³ | |
| Foam rebound rate | 55% | |
| PU upholstery abrasion resistance | 50000 cycles | |
| Seam stitch pitch | 8 stitches per inch | |
| Frame static load stability rating | 150 kg offset load without tipping | |
| 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 upholstery | 1.0mm thick black PU faux leather, matte finish, wipe-clean surface | |
|---|---|---|
| Seat fill | High-resilience polyurethane foam, padded full seat surface | |
| Frame and legs | 1.2mm thick black powder-coated steel, tapered leg profile forming integrated back stiles | |
| Backrest top rail | Curved padded steel rail wrapped in matching black PU, ergonomic horn silhouette | |
| Foot pads | 8mm thick non-slip black plastic, floor-protecting, minor height adjustment possible | |
| Seat support panel | 12mm thick multilayer plywood under foam, secured to frame with hardware | |
| Hardware fasteners | Black zinc-plated steel bolts, KD assembly joints for flat-pack shipping | |
| 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
| Seating function | Fixed-position armless dining seating, no recline, swivel or height adjustment | |
|---|---|---|
| Back support | Curved single-piece backrest with gently backward reclined top rail for lumbar support | |
| Floor protection | Non-slip foot pads prevent scuffing on hard wood or tile flooring, reduce sliding | |
| Cleaning function | Smooth PU leather surface wipes clean with damp cloth for food or beverage spills | |
| Stacking function | Not designed for stacking; fixed leg geometry prevents vertical nesting | |
| Tuck-under function | Armless compact design tucks fully under standard 750mm high dining tables to save space | |
| Assembly requirement | Knock-down construction requiring leg attachment to seat frame with included hardware | |
| 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
| Residential dining room | Pairs with 750mm high dining tables for 6seat household dining sets, armless design saves space | |
|---|---|---|
| Commercial restaurant use | Suitable for fast food, cafe and bistro seating, wipe-clean PU surface supports high turnover cleaning | |
| Hotel banquet/breakfast area | Stacked or tuck-under placement for flexible event seating, consistent black finish matches modern interiors | |
| Home office casual desk seating | Armless compact profile works for secondary desk seating in home workspaces, standard seat height | |
| Rental property furnishing | Durable metal frame and easy-clean surface suits short-term rental and dormitory furnishing, low maintenance | |
| Reception waiting area | Lightweight easy to move design works for small office or salon waiting area seating, modern silhouette | |
| 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
| Domestic furniture seating strength | EN 12520:2015 Furniture: Strength, durability and safety for domestic seating, applicable for household use validation | |
|---|---|---|
| Non-domestic seating strength | EN 16139:2013 Furniture: Strength, durability and safety for non-domestic seating, applicable for restaurant use validation | |
| Furniture surface emission | EN 13722:2004 Furniture: Assessment of surface resistance to cold liquids, applicable for upholstery stain resistance |
Standards applicable to China-market projects
| General dining chair strength requirement | GB/T 3324General technical requirements for wooden furniture, applicable for strength and stability verification | |
|---|---|---|
| Upholstered furniture safety | GB 20400Leather and faux leather limit of harmful substances, applicable for upholstery safety testing | |
| Furniture stability standard | GB/T 10357.2Test of furniture mechanical properties: chair and stool stability, applicable for stability validation |
This product must meet the following technical requirements: 1. General dining chair strength requirement: GB/T 3324General technical requirements for wooden furniture, applicable for strength and stability verification; 2. Upholstered furniture safety: GB 20400Leather and faux leather limit of harmful substances, applicable for upholstery safety testing; 3. Furniture stability standard: GB/T 10357.2Test of furniture mechanical properties: chair and stool stability, applicable for stability validation; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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