gate hook [建] 门钩 ; 栏板锁栓

Gate hook handle 栏板锁栓手柄

inverted-hook gate without gate-slot 无门槽反钩闸门

lifting hook-type gate 钩式提升闸门

gate footstep hook 门柱铰链钩片

double leaf hook-shaped gate 双扇钩形闸门

hook-shaped double leaf gate 钩形双扇闸门