Air-Assisted Folding Stadium Seating YH-QF (Warrior) | Outdoor Bleacher Chairs

Key Features & Benefits

• PP gas-assisted injection molding on the seat and backrest creates an internal hollow geometry that reduces material mass while maintaining structural wall thickness at stress-critical load zones — improving impact resistance and dimensional stability relative to solid injection-molded equivalents under stadium occupancy load cycling.
• Spring folding mechanism with 259mm depth differential between open (546±5mm) and closed (287±5mm) states returns the seat to the closed position automatically, minimizing aisle obstruction in timed evacuation scenarios and reducing row-to-row clearance requirements in riser layout planning.
• Hot-dip galvanized steel support combined with Dacromet treatment fasteners provides corrosion protection at both the structural frame and the fastener interface — hot-dip galvanization deposits a zinc alloy coating on the steel substrate, while Dacromet treatment on fasteners prevents galvanic corrosion at the steel-to-aluminum connection points where dissimilar metal contact would otherwise accelerate oxidation.
• Anodic oxidation treated aluminum beam provides corrosion resistance and surface hardness at the seating beam without the weight penalty of galvanized steel — anodic oxidation creates an aluminum oxide layer integral to the substrate that resists abrasion and atmospheric corrosion in outdoor stadium and exposed bleacher environments.
• BS EN 12727:2000 strength and durability compliance, BS 5852:2006 fire resistance and ignitability compliance, and DIN4102-1 flammability classification provide the three-standard certification framework required for public assembly venue specification across UK, European, and international stadium procurement authorities.
• Riser mounting at 800±5mm and floor mounting at 795±5mm with beam mounting installation method gives structural engineers two confirmed height configurations for integration with existing or new concrete riser geometry — a 5mm height differential between mounting modes allows consistent sightline calculations across both installation types within a single venue.

Applications

• Installed in municipal stadium seating upgrades where BS EN 12727:2000 strength and durability certification and BS 5852:2006 fire resistance compliance meet the public assembly seating specification requirements mandated by local authority venue licensing.
• Deployed in university sports venue bleachers at outdoor court facilities where the hot-dip galvanized steel support, anodic oxidation aluminum beam, and Dacromet fasteners provide corrosion resistance across exposed outdoor conditions without recurring surface maintenance.
• Specified for public school outdoor courts where beam mounting installation, spring fold clearance optimization, and optional armrest configurations allow the seat layout to be adapted to constrained riser depths and variable court configurations within a single product SKU.
• Used in commercial concert halls and multipurpose venues where the YH-QF Warrior tip-up geometry maximizes standing and circulation clearance during ingress and egress cycles, and the anti-UV and anti-weathering PP material properties sustain seat appearance under UV-exposed or climate-controlled venue conditions.
• Deployed in large-scale sports stadium projects where the integrated cupholder and armrest option configurations, stainless steel seat number fasteners, and BS/DIN fire certification documentation package support full stadium seating specification, seat numbering, and authority compliance submission within a single product line.

FAQ

Q1: What are the dimensional spatial footprints and spring folding clearance profile of the YH-QF seat?
The seat is 426±5mm wide, with an open depth of 546±5mm and a closed depth of 287±5mm — a 259mm depth reduction when folded. The spring mechanism returns the seat automatically to the closed position; riser mounting height is 800±5mm and floor mounting height is 795±5mm, providing consistent geometric parameters for riser layout engineering.

Q2: What are the structural composition and anti-corrosion properties of the galvanized steel supports and Dacromet fasteners?
The support frame is hot-dip galvanized steel, depositing a zinc alloy layer on the substrate for cathodic corrosion protection across the full structural frame. Fasteners use Dacromet treatment — a chromate-free zinc-aluminum coating that provides corrosion resistance at the fastener-to-beam interface and prevents galvanic corrosion at points where the steel support connects to the anodic oxidation aluminum beam.

Q3: What do BS EN 12727:2000, BS 5852:2006, and DIN4102-1 certification cover for procurement and authority submissions?
BS EN 12727:2000 certifies the seat's strength and durability under structural loading; BS 5852:2006 certifies fire resistance and ignitability performance; DIN4102-1 provides flammability classification parameters. These three standards together provide the compliance documentation required for public assembly venue seating specification in UK, European, and international stadium procurement authorities.

Q4: What optional accessories are available, and how does beam mounting installation align with riser or floor configurations?
Integrated armrests and integrated cupholders are available as optional accessories on the YH-QF Warrior seat. Beam mounting installation is the confirmed mounting method; riser mounting height is 800±5mm and floor mounting height is 795±5mm, allowing the same seat model to be installed on concrete riser steps or floor-level beam arrays without seat modification.