HS-2103A

Product size requirements:

Aluminum alloy foot size and technical requirements:

1. The casting process must not have large pores, looseness, slag inclusions and other undesirable phenomena.

2. There should be no burrs or flash around the foot after it is formed.

3. Surface sandblasting: black.

Aluminum alloy handrail frame size and technical requirements:

1. The casting process must not have large pores, looseness, slag inclusions and other undesirable phenomena.

2. There should be no burrs or flash around the foot after it is formed.

3. Surface sandblasting: gray.

Aluminum alloy writing board bracket size and technical requirements:

1. The casting process must not have large pores, looseness, slag inclusions and other undesirable phenomena.

2. There should be no burrs or flash around the foot after it is formed.

3. Surface sandblasting: gray.

Technical requirements:

1. The chair is designed and manufactured according to the principles of ergonomics and morphological aesthetics. The curvature of the back cushion and seat cushion fully conforms to the curve of the human body. The seat height and seat depth are reasonable, the sitting feeling is comfortable, the seat cushion can automatically return to its original position, and the appearance of the chair is simple and beautiful.

2. The basic center distance of the seat is 560±5mm, the seat depth with the seat bag opened is 460±5mm, the side depth with the writing board opened is 876±5mm, the basic chair height is 1050±5mm, and the minimum row spacing is 900mm.

3. Under the premise of ensuring the comfort of the audience, the back cushion height shall not exceed 1050mm to increase the sound reflection area of ​​the chair backboard and improve the sound absorption of the seat; sound-absorbing holes shall be made on the seat bottom plate as needed to keep the sound absorption of the seat as consistent as possible at different occupancy rates.

4. Bottom-hidden writing board: The writing board connecting aluminum head and support plate are made of high-quality aluminum alloy material through die-casting. The writing board panel is made of hardwood multi-layer board die-casting. The writing board is fixed by mechanical principle high-strength bolts, so that the connecting parts of the writing board become stronger and stronger with use, and there will be no loosening phenomenon. When opening and recycling, it must have a silencer function, and there must be no rebound force and noise.

5. The fabric is made of high-grade knitted fabric and has been treated with anti-static and anti-moth treatment. It feels comfortable and will not wrinkle, break, pilling or fade after long-term use.

6. The seat foams are all polyurethane cold-foamed high-resilience shaping sponges. The seat sponge dimensions are: length 482±10mm, width 467±5mm, height 96±10mm, sponge density 40~55KG/M3, back sponge dimensions: length 717±5mm, width 490±5mm, height 155±5mm, sponge density 35-45KG/m3, high strength, good resilience, and unique formula, making the foam antibacterial and able to effectively kill pathogens such as Escherichia coli.

7. The seat bracket steel is made of high-quality cold-rolled steel, and the welded parts are welded by robots with high welding quality. The surface is degreased, cleaned, rust-removed, cleaned, phosphated, cleaned, passivated, electrostatically sprayed with powder, solidified, cooled, and then electrostatically sprayed with 30 microns of epoxy resin to ensure that the paint film will not rust after the 72-hour salt bath corrosion resistance test.

8. The seat armrests are made of high-quality imported oak solid wood, with curved shapes, no deformation or cracking, and the armrest dimensions are: length 391±2mm, width 56±2mm, and height 44±2mm.

9. The seat adopts a gas rod damping return mechanism, with two-level buffering that is fast at first and then slow, so that the seat can return to its position within 3 seconds. It has an escape silencer function. Rubber pads are added to the collision part of the seat to prevent collision and reduce noise, so that the seat opens without noise and returns slowly without impact.

10. Seat back inner and outer panels: Made of high-quality high-density hardwood multi-layer boards, cold-pressed and molded by molds, non-fading and anti-deformation. Back outer panel specifications: length 760±2mm, width 485±2mm, thickness 15mm. Seat outer panel dimensions: length 440±2mm, width 475±2mm, thickness 15mm. Back inner panel: Made of high-quality plywood, molded by mold bending. The appearance is arc-shaped, beautiful and curvaceous. Back inner panel dimensions: length 688±2 mm, width 485±2mm, thickness 6 mm.

11. Aluminum alloy handrail frame: Made of high-quality aluminum alloy material through die-casting, it has a built-in hidden writing board that can be opened and recycled, and ensures that the writing board has enough space to move around so that it will not collide with the handrail frame when it is opened and recycled. The aluminum alloy handrail is ≥50mm wide and weighs ≥2.9KG. The handrail surface is designed with a curved surface to ensure the full beauty of the product.

12. Standing foot: The support plate is made of high-quality aluminum alloy material and is die-casted by a mold. The foot pipe is made of high-quality square tube, and the foot tube is made of high-quality steel plate. It is pressed by a mold and then welded with carbon dioxide. The appearance is a single-foot under-ventilation structure device. The surface is treated with rust removal, cleaning, oxidation, drying, static electricity, high temperature, and static spraying matte black. The dimensions are: length 495±2mm, width 285±2mm, and height 300±2mm.

13. The seat is fixed to the ground with hidden pressure-explosive screws, and the exterior is specially designed with a plastic dust cover to ensure that the chair legs are smooth and beautiful while preventing dust accumulation and facilitating cleaning.

14. Provide one set of single-seat whole chair samples, one set of aluminum alloy standing feet samples, one set of aluminum alloy armrest frame samples, and one set of aluminum alloy writing board bracket samples as required. No points will be awarded if samples are not provided as required or the samples provided do not meet the requirements.