タイトルまたは説明

1.Frame: made of Q**5 steels; select proper material to make the general frame of the door leaves be fitted with reinforcing ribs. 2.Face panel and back panel:made of bi-layer color steel sheet filled with polyurethane foaming insulation plate; the thickness of the color steel sheet is 4mm, insulation plate is *0mm. 3.Drive:reducing motor on the door; the super-large door can adopt double-group drives. 4.Control: adopt variable frequency controller 5.Safety measures: Infrared detection,safety air bag,emergency switch.