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激光切孔,50 mm 间隔, 表面塑粉保护涂层
3 mm 壁厚 (Q235 钢 ) ,3”x 3”,(75 x 75 mm) 矩形管框架
每个 4' (1220mm) 宽训练模块配 1 付 J,型标准负重托架