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Structural features：
1.The understructure is made by welded angle bar with surface hot-galvanized.
2.The tread is made by extruded aluminum with surface anodized.
3.The riser is rolled by 2.0 galvanized steel belt with surface powder-coated.
3.The guardrail is made by round bar and chain link mesh with surface galvanized and powder coated.
5.Step Width: 632mm/764mm/882mm Riser Height: 250mm
metal bleacher
