| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall desk dimensions | 650 x 450 x 780 mm | |
|---|---|---|
| Desk worktop thickness | 25 mm | |
| Under-desk open storage rack clearance | 160 mm | |
| Side bag hook projection from desk frame | 37 mm | |
| Knee clearance height under desk | 620 mm | |
| Overall chair dimensions | 400 x 390 x 820 mm | |
| Chair seat height from floor | 460 mm | |
| Chair seat panel dimensions | 400 x 390 mm | |
| Chair backrest dimensions | 400 x 250 mm | |
| Steel frame tubing specification | 30 x 60 mm oval tube, 1.2 mm wall thickness | |
| PP foot cap diameter | 30 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
| Total net weight per set | 20 kg | |
|---|---|---|
| Maximum static load on desk worktop | 150 kg | |
| Maximum static load on chair seat | 120 kg | |
| Side bag hook load capacity | 25 kg | |
| Floor glide static friction coefficient | 0.6 | |
| Powder coating corrosion resistance life | 5 years | |
| 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
| Desk worktop panel | 25mm particleboard core with light oak melamine laminate, PP edge banding | |
|---|---|---|
| Chair seat and backrest panels | Matching light oak melamine-laminated wood-based panels, bolted to frame | |
| Desk and chair support frame | Oval cold-rolled steel tube, silver electrostatic powder coating after shot blasting | |
| Under-desk storage rack | Round steel tube cross bars welded to desk frame, matching powder-coated finish | |
| Side school bag hook | 5mm bent steel rod, welded to desk side frame, powder-coated silver | |
| Frame foot caps | Black injection-molded PP plastic, press-fit to tube ends | |
| Frame fasteners | Zinc-plated steel hex bolts and nuts for cross-brace connections | |
| Welded joint finish | Polished smooth welds at frame tube connections, fully powder coated | |
| 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
| Fixed non-adjustable height design | Desk and chair heights are permanently set for secondary school/adult student use | |
|---|---|---|
| Under-desk open tubular storage | Horizontal steel bars provide open accessible storage for books and supplies | |
| Integrated side bag hook | Steel J-hook holds school bags off the floor to free up leg space | |
| Cross-braced frame stability | Diagonal and horizontal steel cross braces prevent frame wobble during use | |
| Non-slip floor protection caps | PP foot caps prevent scratching hard floors and reduce sliding noise | |
| Easy-clean laminate surfaces | Melamine finish resists ink stains, scratches, and moisture for daily classroom use | |
| Knock-down bolted assembly | Set ships disassembled with bolted connections for fast on-site assembly | |
| 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
| K-12 secondary school classrooms | Designed for daily individual study use in standard institutional classroom layouts | |
|---|---|---|
| Tutoring centers and training institutions | Durable fixed configuration fits high-traffic group learning environments | |
| Home study spaces for teens | Compact footprint fits small home study areas for individual student homework | |
| Exam and testing venues | Stable non-adjustable design provides consistent, distraction-free seating | |
| Temporary learning facilities | Knock-down construction allows fast deployment for emergency or temporary 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 | Applicable standard for functional and safety requirements of educational furniture | |
|---|---|---|
| EN 1729-2:2012 | Applicable standard for safety requirements and test methods for educational furniture |
Standards applicable to China-market projects
| GB/T 3976-2014 | Applicable standard for size and functional requirements of school desks and chairs | |
|---|---|---|
| GB 28007-2011 | Applicable safety standard for children's and student furniture general technical requirements |
This product must meet the following technical requirements: 1. GB/T 3976-2014: Applicable standard for size and functional requirements of school desks and chairs; 2. GB 28007-2011: Applicable safety standard for children's and student furniture general technical requirements; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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