Angles and channels are essential components in structural engineering and metal fabrication. Angles are L-shaped sections, typically used for making frames, braces, and supports. They are defined by their leg lengths and thickness. Channels, or C-sections, are U-shaped and used for structural applications where higher strength and stability are required. They offer excellent resistance to bending and are commonly utilized in construction, manufacturing, and automotive industries. Both angles and channels can be made from various materials, including steel, aluminum, and stainless steel, and come in different sizes to suit specific project needs.