1201D

Dimensions:

Foot size and technical requirements:

1: The surface is anti-rust electrostatically sprayed black.

2: There are no cold welds or cracks at welding points.

3: Provide a standing sample.

2. Technical requirements

1. The seat is designed and manufactured according to the principles of ergonomics and morphological aesthetics. The curvature of the seat and back cushions fully conforms to the curve of the human body. The armrest frame and the bottom foot are stamped with high-quality hot-rolled plates, and the foot tube is made of high-quality hot-rolled plates welded by carbon dioxide. The surface is treated with rust-proof electrostatic spray matte black. The seat height and seat depth are reasonable, the sitting feeling is comfortable, the seat cushion can automatically return, and the seat appearance is simple and beautiful.

2. The basic center distance of the seat is 590±1.0mm, the side depth of the seat bag when opened is 708±1.0mm, the seat bag depth is 450±1.0mm, and the basic seat height is 1000±1.0mm. Minimum row spacing: 900mm.

3. Under the premise of ensuring the comfort of the audience, the back cushion height shall not exceed 1000mm to increase the sound reflection area of ​​the chair backboard and improve the sound absorption of the seat; sound-absorbing holes shall be made in the seat bottom plate as needed to keep the sound absorption of the seat as consistent as possible at different occupancy rates.

4. The writing board is die-casted with an aluminum alloy mold, equipped with an aluminum alloy rotating head, the panel is made of high-density medium-density fiberboard, externally pressed triamine board, and PVC edge sealing on all sides. The dimensions are: length 270±1.0mm, width 250±1.0mm, and thickness 12mm. The armrest cover and writing board are tilted upward by 6.5 degrees to ensure a comfortable and natural writing state. When opened and recycled, it must have a muffler function, and there must be no rebound force or 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 470±1.0mm, width 460±1.0mm, height 150±1.0mm, and sponge density is 50-55KG/M3. The back sponge dimensions are: upper back sponge length 460±1.0mm, width 285±1.0mm, height 80±1.0mm, lower back sponge length 405±1.0mm, width 460±1.0mm, height 155±1.0mm, and sponge density is 40-45KG/M3. It has high strength, good resilience, and a unique formula that makes the foam antibacterial and can effectively kill pathogens such as Escherichia coli.

7. All steel materials are made of the highest quality steel, and the welded parts are welded by robots, with high welding quality. The handrail bracket is formed by cold-rolled plate or profile stamping, and the surface is degreased, cleaned, rust-removed, cleaned, phosphated, cleaned, passivated, electrostatically sprayed with powder, cured, 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. Seat armrest cover: Made of high-quality imported oak solid wood, with curved shape, no deformation or cracking. The surface of exposed wooden parts is sprayed with environmentally friendly polyester paint, and the content of harmful substances meets the green environmental protection standards.

9. Seat and back outer panels: Made of high-quality high-density hardwood multi-layer boards, they are formed by mold bending, with an arc shape, beautiful and elegant, with beautiful curves, no fading, and anti-deformation. Back outer panel specifications: upper back outer panel specifications: length 490±1.0mm, width 285±1.0mm, thickness 15mm, lower back outer panel specifications: length 490±1.0mm, width 425±1.0mm, thickness 15mm. Seat outer panel size specifications: length 440±1.0mm, width 415±1.0mm, thickness 12mm.

10. Back inner plate: Made of high-quality plywood and formed by die bending. The appearance is arc-shaped, beautiful and elegant, with curvaceous beauty. Dimensions: Upper back inner plate dimensions: length 420±1.0mm, width 265±1.0mm, thickness 6 mm, lower back inner plate dimensions: length 420±1.0mm, width 405±1.0mm, thickness 6 mm. Seat iron frame: Made of high-strength high-quality carbon steel plate by stamping, bending and welding, and 5 2.5mm diameter S-shaped snake springs are added to ensure the comfort of the seat. Dimensions: length 420±1.0mm, width 410±1.0mm, height 56±1.0mm.

11. The seat cushion automatically returns and is precisely positioned to ensure that it is parallel to the armrest, ensuring the beauty of the product. The return mechanism adopts a damping slow return mechanism, and the two-level buffering is fast at first and then slow, so that the seat bag can return to its position within 3 seconds. It has escape and silencer functions. Rubber pads are added to the collision part of the seat bag to prevent collision and reduce noise, so that the seat bag opens without noise and returns slowly without impact.

12. Armrest foot: Made of high-quality 1.5mm thick carbon cold-rolled steel through die stamping, welding, grinding, degreasing and rust removal, and then electrostatic spraying. It is durable, rust-proof and corrosion-resistant. The foot pipe is made of 80×427×586 high-quality hot-rolled plate welded by carbon dioxide, and the surface is treated with rust-proof electrostatic spray matte black. The left and right sides are equipped with side panels and covered with linen flannel, which is beautiful and anti-collision. It is composed of a three-layer structure of high-quality fabrics (flannel + 2mm sponge) + medium-density fiberboard. The size specifications are: length 388mm, width 440mm, thickness: 4mm.

13. The seat is fixed to the ground with hidden pressure-explosive screws, and the appearance 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. It is required to provide one set of single-seat complete chair samples; provide one small sample of the armrest and footrest accessories. The armrests should be tilted upwards at 6.5 degrees to ensure comfortable and natural writing. If the samples are not provided as required or the samples provided do not meet the requirements, no points will be awarded.