From manual to electric, from standard sizes to customized solutions, Low Back Retractable Grandstand Seats always put customer needs at the core. With convenient installation and maintenance, an ultra-long service life, and full international certifications, they have become the preferred product for stadium construction worldwide and are widely recognized by the market.
The widespread use of Low Back Retractable Grandstand Seats is inseparable from their performance characteristics:
High space utilization: The retractable design allows the stands to be folded away when not in use, saving significant space and meeting the venue's diverse usage needs, such as for regular fitness use or unfolding to provide seating for events or performances.
Moderate comfort: The low-back design is ergonomic, providing support for spectators without taking up too much space. Some seats also feature curved shapes that conform to the human body's physiological curves, increasing stress points and enhancing comfort.
Stable structure: The support structure is typically meticulously designed, using alloy steel frames connected by high-strength tension profiles. The well-balanced main beams and sub-beams ensure the stability and safety of the stands.
High weather resistance: Seat materials generally possess excellent anti-aging, impact resistance, and resistance to high and low temperatures. For example, high-density polyethylene (HDPE) seats, after a 3500-hour aging test, retain 65% of their impact strength and show no deformation after 72 hours in an environment ranging from +80℃ to -60℃.
Easy installation and maintenance: The modular design allows for simple and quick installation, and facilitates disassembly and transportation. Meanwhile, the seat surface is smooth, easy to clean, and has low maintenance costs.
Performance characteristics are closely related to material specifications. The main specifications of common Low Back Retractable Grandstand Seats are as follows:
Seat Dimensions: Common seat widths are 420mm, depths are 420mm, and heights are 180mm, with a center-to-center distance of 460mm-520mm.
Grandstand Support Structure: Step width is generally controlled at 700mm, and step height at 300mm, conforming to ergonomics for easy movement of spectators.
Mechanical Properties: Seat surface static load reaches 2000N (20 cycles without damage), backrest static load is 800N (20 cycles without deformation); seat surface load is 960N and can be cycled 200,000 times; backrest impact height is 630mm and can withstand 20 impacts.
Seat Material: Commonly made of high-density polyethylene (HDPE) through a hollow blow molding process, possessing high rigidity and toughness. Some seats also utilize polyurethane foam with high resilience for increased comfort.
Frame material: Primarily alloy steel, with some components such as the bed frame's front edge and steps featuring aluminum-titanium alloy edging, ensuring both strength and excellent corrosion resistance.
Low back retractable grandstand seats are manufactured using two main telescopic methods: manual telescopic, where the grandstand is extended and retracted manually, suitable for smaller venues or less frequently used locations, and relatively low-cost; and electric telescopic, driven by a motor, offering convenient and quick operation, allowing for rapid extension and retraction, suitable for large venues or locations with high ease of use requirements.
Low back retractable grandstand seats are primarily used in sports stadiums, schools, and community activity centers, meeting the seating needs of various sporting events such as basketball, football, and tennis. They are suitable for school gymnasiums, auditoriums, and playgrounds, and can be used for sports meets, cultural performances, academic reports, and other activities, providing a multifunctional activity space for community residents, including various community events and film screenings.
