1. Installation of door closers and rolling type hinge, so that can ease the doors open automatically, and without any noise and collisions. 加装闭门器和滚动轴承式合页,使门扇能够轻松自如自动开启,且无任何杂音和碰撞。
2. Surface mounted closers shall be full rack and pinion type, with pressure cast alloy shell, with no more than 53 mm (2 1/8") projection from the door surface." 表面安装式关门装置应是全齿条的和小齿轮型的,带压力铸造合金的外壳,从门表面突出不超过53毫米(2 1/8英寸)。
3. A. Surface Closers: BHMA A156.4; rack-and-pinion hydraulic type with adjustable sweep and latch speeds controlled by key-operated valves and forged-steel main arm. 外露的闭门器:BHMA A156.4,齿条和小齿轮和液压式可调闩锁速度,由钥匙阀和锻造钢铁主臂控制。
4. Guangdong Yongheng Metal Products Factory is a production of the Earth'saxis, handles, door closers, KFC door locks and other Metal products, professional manufacturers. 广东永恒五金制品厂是一家专业生产地轴,拉手,闭门器,肯德基门锁等五金产品的厂家。产品以设计新颖、品质优良和服务完善,深受广大客户的青睐。