| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall two-seat unit dimensions | 1160 x 750 x 1040 mm | |
|---|---|---|
| Per-seat center distance | 580 mm | |
| Seat usable inner width | 490 mm | |
| Seat pan depth | 460 mm | |
| Seat height from floor to seat surface | 450 mm | |
| Armrest height from floor | 630 mm | |
| Single armrest width | 80 mm | |
| Backrest height above seat surface | 590 mm | |
| Minimum row-to-row installation spacing | 950 mm | |
| Floor mounting plate width | 120 mm | |
| Folded seat protrusion from backrest | 220 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
| Per-seat static load capacity | 260 kg | |
|---|---|---|
| Net weight per two-seat unit | 28 kg | |
| Seat return mechanism cycle life | 50000 cycles | |
| Recommended maximum user weight per seat | 120 kg | |
| Backrest static load rating | 150 kg | |
| Surface powder coating abrasion resistance | 2000 cycles | |
| Seat panel impact resistance | 10 J | |
| 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
| Support frame | 2.2 mm thick cold-rolled steel, black electrostatic powder coating | |
|---|---|---|
| Seat and back panels | 12 mm thick MDF core with tan wood-grain laminate finish | |
| Armrests | Integrated curved steel frame wrapped in black impact-resistant PP coating | |
| Seat return mechanism springs | 65Mn heat-treated spring steel with anti-rust electroplating | |
| Noise damping components | Nitrile rubber muffler pads at seat pivot points | |
| Floor mounting flanges | 3.0 mm thick steel plates with slotted anchor holes | |
| Seat pivot bushings | Self-lubricating nylon bushings at rotation points | |
| Seat panel inner support | 1.5 mm thick steel inner frame under each seat pan | |
| Surface pretreatment | Acid wash and phosphating before powder coating | |
| 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
| Seat self-return function | Gravity-spring driven automatic upward flip to vertical position when unoccupied | |
|---|---|---|
| Floor fixed installation | Permanent anchoring to sloped or flat auditorium floors via flanged base plates | |
| Ganged row alignment | Interconnected shared frame to maintain uniform seat spacing in continuous rows | |
| Seat pivot rotation | 90 degree upward rotation range from horizontal seating to vertical stored position | |
| Noise-dampened operation | Rubber pads eliminate metal impact noise during seat return | |
| Under-seat clearance | 300 mm open space under folded seats for foot traffic and cleaning | |
| Ergonomic back support | 5 degree fixed backward incline for seated comfort during long events | |
| 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
| Lecture hall installation | Suitable for tiered university lecture halls requiring clear aisle space between rows | |
|---|---|---|
| Multi-function conference hall use | Appropriate for corporate conference centers hosting regular seated events | |
| Cinema and theater seating | Compatible with small cinema or theater venues requiring rowed fixed seating | |
| Government and institutional auditoriums | Meets public venue durability needs for government assembly halls | |
| School performing arts centers | Suitable for K-12 and college auditoriums hosting performances and assemblies | |
| Training center tiered seating | Applicable for corporate training facilities with sloped floor seating layouts | |
| 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 12727:2016 | Applicable for strength, durability and safety requirements for fixed auditorium seating | |
|---|---|---|
| EN 1022:2018 | Applicable for seating stability verification for permanently installed public seats | |
| EN 13722:2004 | Applicable for furniture hardware performance requirements for pivot and return mechanisms |
Standards applicable to China-market projects
| GB/T 3324-2017 | Applicable for general technical requirements of metal furniture used in public seating | |
|---|---|---|
| GB/T 10357.3-2013 | Applicable for mechanical performance testing of chair and stool seating surfaces and backrests | |
| GB 18584-2001 | Applicable for indoor decoration material limit of harmful substances in wooden furniture components | |
| GB/T 191-2008 | Applicable for packaging, storage and transportation marking requirements for delivered units |
This product must meet the following technical requirements: 1. GB/T 3324-2017: Applicable for general technical requirements of metal furniture used in public seating; 2. GB/T 10357.3-2013: Applicable for mechanical performance testing of chair and stool seating surfaces and backrests; 3. GB 18584-2001: Applicable for indoor decoration material limit of harmful substances in wooden furniture components; 4. GB/T 191-2008: Applicable for packaging, storage and transportation marking requirements for delivered units; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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