"circular frame" is correct and usable in written English.
You can use it to describe something that has a round shape, such as a frame for a painting or a frame for a mirror. For example, "The wall was decorated with a circular frame filled with photos of the family."
The propeller was attached directly to the circular frame on which the rotating cylinders were mounted.
The whole portrait is encased in a large, nearly circular frame, a little off-center on the bill.
At base, the image is Da Vinci's Vitruvian Man, rebooted as the musculature of a half-finished android stretched on a circular frame.
It used an external circular frame supported by columns of a fixed height which allowed the enclosed container to rise and fall on a floating water reservoir.
We fixed strong upright bamboos by each yew and at head height, lashed lengths of willow horizontally between them to make a circular frame.
From Thailand and the Khmer civilization of Cambodia probably came both the use of gongs in a circular frame and the dramatization of episodes from the Ramayana.
A wheel and axle is made up of a circular frame (the wheel) that revolves on a shaft or rod (the axle).
The two-headed tacked drum hung in an elaborate circular frame in court music is a gaku-daiko or tsuri-daiko.
Cost: £170 available now Samsung Gear Live review The second round Android smartwatch, the LG G Watch R is essentially the square LG G Watch above squeezed into a circular frame.
It takes a certain wit to set historic cars on shelves that project from a fifty-foot-high wall, or to display bicycles on a circular frame suspended from the ceiling like a floating velodrome.
The circular frame resulted in the highest fabric V50 velocity.
