| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall desk dimensions | 1220 x 450 x 780 mm | |
|---|---|---|
| Overall single chair dimensions | 400 x 380 x 780 mm | |
| Chair seat height from floor | 450 mm | |
| Chair seat size | 400 x 380 mm | |
| Chair backrest height above seat | 330 mm | |
| Per-student open storage cubby dimensions | 600 x 450 x 193 mm | |
| Under-desk knee clearance height | 580 mm | |
| Under-desk knee clearance depth | 400 mm | |
| Steel frame tube wall thickness | 2.0 mm | |
| Desk top panel thickness | 25 mm | |
| Chair seat/back panel thickness | 10 mm | |
| Chair footrest bar height from floor | 170 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
| Desk top static load capacity | 150 kg | |
|---|---|---|
| Set total net weight | 28 kg | |
| Powder coating scratch resistance | 2000 cycles | |
| Weld joint static load durability | 500 kg | |
| Recommended user age range | 18 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 | |
| Caster Rolling Durability Reference | Acceptance target 30000 cycles |
Core acceptance fields · Panels / hardware / frame / upholstery
| Desk frame tubing | Cold-rolled oval steel tube, 25x50mm cross-section | |
|---|---|---|
| Desk top panel | 25mm melamine-faced particleboard, rounded safety edges | |
| Under-desk storage cubbies | 0.8mm thick cold-rolled steel, white powder coated finish | |
| Chair frame tubing | 25mm diameter round cold-rolled steel tube, white powder coated | |
| Chair seat/back panels | 10mm thick plywood with wood-grain laminate finish, riveted attachment | |
| Foot caps | Injection-molded black rubber, non-slip floor protection | |
| Footrest crossbar | 19mm round steel tube, welded to chair front legs, white coated | |
| Surface finish | Acid-pickled and phosphated pretreatment with electrostatic epoxy powder coating | |
| Panel edge treatment | Sanded and sealed edges with matching edge banding | |
| 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 |
Adjustment / rotation / tilt / mobility / storage features
| Height adjustment | Fixed non-adjustable height for desk and chairs, no telescoping sleeves | |
|---|---|---|
| Under-desk storage | Two separate divided open front cubbies, one per student for books/supplies | |
| Seating configuration | Two independent armless chairs positioned for side-by-side student use | |
| Floor protection | Non-marking rubber foot caps on all 8 desk legs and 8 chair legs prevent floor scuffs | |
| Chair foot support | Integrated welded steel footrest bar on each chair for resting feet during seated work | |
| Assembly method | Knock-down bolted assembly with pre-drilled frame holes for flat-pack shipping | |
| Stacking capability | Non-stackable fixed-frame chairs, no interlocking storage design | |
| Surface cleaning | Smooth non-porous laminate and powder-coated surfaces support wipe-down sanitization | |
| 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
| Primary and secondary school classrooms | Durable fixed-configuration set for daily student lessons and study | |
|---|---|---|
| Private training centers and cram schools | Economical easy-to-clean set for high-turnover student use | |
| Tutoring and after-school study spaces | Dual-seat layout supports one-on-one or paired learning activities | |
| Temporary learning facilities | Knock-down design allows rapid setup and reconfiguration for temporary use | |
| Rural and community education spaces | Robust steel frame construction resists heavy use in high-traffic community sites | |
| 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 | Functional and safety requirements for educational furniture Part 1: Seating and tables | |
|---|---|---|
| EN 1729-2:2012 | Safety requirements and test methods for educational furniture Part 2: Strength and durability | |
| EN 12521:2015 | Furniture for educational institutions: mechanical safety requirements |
Standards applicable to China-market projects
| GB/T 3976-2014 | Standard for functional sizes and technical requirements of school desks and chairs | |
|---|---|---|
| GB/T 3324-2017 | General technical requirements for wooden furniture for general use | |
| GB/T 13667.1-2015 | General technical requirements for steel furniture | |
| GB 18580-2017 | Formaldehyde emission limit for wood-based panels used in interior finishing | |
| GB/T 10357.1-2013 | Test method for mechanical properties of tables: static load and stability |
This product must meet the following technical requirements: 1. GB/T 3976-2014: Standard for functional sizes and technical requirements of school desks and chairs; 2. GB/T 3324-2017: General technical requirements for wooden furniture for general use; 3. GB/T 13667.1-2015: General technical requirements for steel furniture; 4. GB 18580-2017: Formaldehyde emission limit for wood-based panels used in interior finishing; 5. GB/T 10357.1-2013: Test method for mechanical properties of tables: static load and stability; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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