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ZYTJ_12
WANGLI
This height-adjustable classroom desk and chair set features a convenient hand-crank lifting mechanism for effortless height adjustment, making it ideal for classrooms with students of varying sizes. The desk features a 400×600×18mm desktop made from density board with ABS injection-molded edge banding and double-sided decorative melamine paper — offering excellent scratch and moisture resistance. The desk height is adjustable from 670mm to 790mm via the hand-crank system, accommodating students of different heights. The 450×300×150mm book basket is constructed from 0.7mm galvanized steel sheet through one-piece stamping, featuring small holes on both sides for ventilation and easy visual identification of contents. The desk frame features 20×49×1.1mm oval tubes for the upper frame, with 25×25×1.0mm square tube under-desktop support, and 30×60×1.2mm oval tubes for the lower frame with 20×49×1.1mm connecting bars for structural integrity. An ABS backpack hook rated for loads ≥10KG provides convenient bag storage. The matching chair features a 400×370mm seat and 400×220mm backrest — both made from PE hollow blow-molded material through one-piece molding, offering excellent impact resistance, lightweight durability, and easy cleaning. The chair height is adjustable from 380mm to 430mm with a total height of 790mm. The chair frame uses 20×49×1.1mm oval tubes for the upper frame, 30×60×1.2mm oval tubes for the lower frame, 20×49×1.1mm connecting bars, 15×30×1.5mm oval tubes for under-seat support, and 20×40×1.2mm oval tubes for backrest support. All bottom fittings are made from high-quality nylon plastic with a rated friction resistance of ≥100,000 cycles, ensuring smooth, quiet movement and long-term durability. All steel components undergo acid pickling and phosphating pretreatment before powder coating, delivering high scratch resistance and superior corrosion protection. This set combines robust construction, ergonomic design, and the convenience of hand-crank height adjustment to deliver reliable performance in demanding educational environments.
Component | Specification | Material/Note |
|---|---|---|
Overall size | 400×600×(670-790)mm | Hand-crank height adjustable |
Desktop size | 400×600×18mm | Density board with ABS injection-molded edge banding, double-sided decorative melamine paper |
Book basket | 450×300×150mm | 0.7mm galvanized steel sheet, one-piece stamping, small holes on both sides |
Upper frame tube | 20×49×1.1mm | Oval tube |
Under-desktop support | 25×25×1.0mm | Square tube |
Backpack hook | ABS material | Load capacity ≥10KG |
Lower frame tube | 30×60×1.2mm | Oval tube |
Connecting bar | 20×49×1.1mm | Oval tube |
Component | Specification | Material/Note |
|---|---|---|
Overall size | 400×370×(380-430)×790mm | Height adjustable |
Seat size | 400×370mm | PE hollow blow-molded, one-piece molding |
Backrest size | 400×220mm | PE hollow blow-molded, one-piece molding |
Upper frame tube | 20×49×1.1mm | Oval tube |
Lower frame tube | 30×60×1.2mm | Oval tube |
Connecting bar | 20×49×1.1mm | Oval tube |
Under-seat support tube | 15×30×1.5mm | Oval tube |
Backrest support tube | 20×40×1.2mm | Oval tube |
Component | Material | Note |
|---|---|---|
Bottom plastic fittings | Nylon plastic | Friction resistance ≥100,000 cycles |
Process | Specification | Note |
|---|---|---|
Pretreatment | Acid pickling and phosphating | Corrosion resistant, rust proof |
Coating | Powder coating | High scratch resistance |
Standard Classrooms
The hand-crank adjustable desk accommodates students of different sizes quickly and easily. The ABS-edged melamine desktop resists scratches and daily wear. The galvanized steel book basket with ventilation holes provides sturdy, breathable storage for textbooks and supplies. The durable nylon glides ensure stability on various floor surfaces.
Training Centers
The 600mm desktop depth provides ample space for laptops and study materials. The hand-crank height adjustment ensures ergonomic comfort for extended training sessions. The PE blow-molded seat and backrest are easy to clean and resist daily wear. The powder-coated steel frame withstands frequent use in high-turnover environments.
Examination Halls
The sturdy construction ensures stable, wobble-free writing surfaces during exams. The ventilated book basket allows invigilators to quickly inspect contents. The hand-crank adjustable height accommodates students of different sizes for proper exam posture. The durable surfaces maintain a professional appearance.
Multi-Purpose Learning Spaces
The versatile height-adjustable design adapts to various activities — individual study, group work, or examinations. The durable nylon glides protect floors during reconfiguration. The easy-to-clean PE and melamine surfaces stand up to daily use. The ABS backpack hook provides convenient bag storage.
The desk features a hand-crank mechanism that allows for smooth, effortless height adjustment from 670mm to 790mm. Simply turn the crank handle located at the side of the desk to raise or lower the desk to the desired height. This system is ideal for multi-grade classrooms where students of different sizes need to use the same desk.
The desk is adjustable from 670mm to 790mm via hand-crank mechanism, and the chair is adjustable from 380mm to 430mm. The desk-to-seat height differential ranges from approximately 290mm to 410mm across all settings, ensuring proper ergonomic posture for students of various sizes.
The desktop is made from density board with ABS injection-molded edge banding and double-sided decorative melamine paper. The ABS edge banding provides excellent impact and moisture protection, while the melamine surface offers scratch resistance and easy cleaning.
