The frame component is the basic structure of the bicycle, and it is also the skeleton and main body of the bicycle. Other components are also directly or indirectly installed on the frame. There are many structural forms of frame components, but they can be divided into two categories: men's frames and women's frames.
The frame is generally made by welding and combining ordinary carbon copper pipes. In order to reduce tube weight and increase strength, higher-grade bicycles are made of low-alloy steel tubes. In order to reduce the resistance of fast driving, some bicycles also use streamlined steel pipes.
Because the bicycle relies on the human body ’s own driving force and riding skills, the frame becomes an important structure that can withstand the impact load generated by the bicycle during travel and whether it can comfortably and safely carry the human body. Pros and cons will directly affect the safety, stability, and lightness of the ride. Generally speaking, the spokes are of equal diameter. In order to reduce the gravity, there are also variable-diameter spokes with large ends and small middle diameters, and flat spokes to reduce air resistance.