| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall set footprint | 700 x 650 x 760 mm | |
|---|---|---|
| Desktop work surface | 650 x 450 mm | |
| Maximum desk surface height | 760 mm | |
| Minimum desk surface height | 640 mm | |
| Seat panel dimensions | 400 x 360 mm | |
| Maximum seat height | 460 mm | |
| Minimum seat height | 380 mm | |
| Backrest dimensions | 400 x 350 mm | |
| Undermount storage drawer | 500 x 330 x 170 mm | |
| Steel support tube section | 25 x 50 mm oval cold-rolled steel | |
| Sled base glide spacing | 600 mm | |
| Knee clearance under desk | 590 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
| Desktop static load capacity | 50 kg | |
|---|---|---|
| Set net weight | 22 kg | |
| Height adjustment positions | 5 positions | |
| Frame adjustment cycle durability | 100000 cycles | |
| Edge safety radius | 10 mm | |
| Recommended student height range | 1800 mm | |
| 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
| Desktop panel | 1.2 mm thick textured light grey molded PP/ABS composite | |
|---|---|---|
| Seat and backrest panels | Molded light grey impact-resistant PP/ABS with reinforcing ribs | |
| Frame tubing | 1.4 mm wall thickness cold-rolled oval steel, off-white electrostatic powder coat | |
| Height adjustment sleeves | Telescoping steel inner tube with 1.2 mm wall thickness, black lock ring | |
| Floor contact glides | Injection-molded black PP non-slip end caps | |
| Undermount drawer | Light grey injection-molded PP with reinforcing ribs | |
| Frame welds | Full continuous welds at tube joints with anti-rust primer under powder coat | |
| Fasteners | Zinc-plated steel locking bolts and nuts for height adjustment | |
| 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
| Bolt-operated height adjustment | Pin-and-bolt lock through pre-punched leg holes, 30 mm vertical increments | |
|---|---|---|
| Cantilever sled frame design | Connected single-piece desk-chair frame with no moving joints, anti-tip geometry | |
| Undermount pull-out storage | Front-access slide-out drawer for notebooks, pens and small school supplies | |
| Floor protection glides | Non-marring PP caps prevent floor scratches and reduce sliding noise | |
| Ergonomic angled backrest | 10 degree backward rake for seated lumbar support during long class periods | |
| Rounded edge safety design | All exposed desk and seat edges finished with rounded profiles | |
| Anti-tip T-sled base | Dual cross-foot base design distributes weight to prevent forward/back tipping | |
| Integrated book hook provision | Rear frame tube designed for hanging school bags and water bottles | |
| 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
| K-12 general classroom use | Standard fixed-row seating for primary, middle and high school instructional spaces | |
|---|---|---|
| Training center and tutorial room use | Durable connected seating for after-school programs and vocational training centers | |
| Home study space for students | Durable height-adjustable set for dedicated home study areas for school-age children | |
| Library reading and study areas | Space-efficient connected seating for public and school library individual study carrels | |
| Exam hall seating | Fixed anti-tip seating for standardized testing and examination venues | |
| Temporary classroom and event seating | Stackable? No, but easy to relocate for temporary school events and pop-up classrooms | |
| 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 1729-1:2015 | Furniture - Chairs and tables for educational institutions - Functional dimensions | |
|---|---|---|
| EN 1729-2:2012 | Furniture - Chairs and tables for educational institutions - Safety requirements and test methods | |
| EN 1022:2018 | Domestic furniture - Seating - Determination of stability |
Standards applicable to China-market projects
| GB/T 3976-2014 | Functional sizes and technical requirements for school desks and chairs | |
|---|---|---|
| GB/T 9286-1998 | Cross-cut adhesion test for powder-coated metal frame finishes | |
| GB 18584-2001 | Indoor decorating and refurbishing materials - limit of harmful substances | |
| GB/T 10357.1-2013 | Furniture mechanical performance test for table static load |
This product must meet the following technical requirements: 1. GB/T 3976-2014: Functional sizes and technical requirements for school desks and chairs; 2. GB/T 9286-1998: Cross-cut adhesion test for powder-coated metal frame finishes; 3. GB 18584-2001: Indoor decorating and refurbishing materials - limit of harmful substances; 4. GB/T 10357.1-2013: Furniture mechanical performance test for table static load; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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