... and aluminum frames .2. Its surface can be covered with carpet , the stage has good performance in fire resistance , abrasion resistance, free ... , and good at decoration effect .3. High hardness aluminum alloy is employed for the stage frames, with a firm structure and smart outlook ... , main tube is 50*2mm, small tube is 25*2mm.3. Stage aluminum hoist leg: 6061-T6 of aluminum material , 50*2mm ...