Bollards are primarily manufactured from seamless steel tubing, featuring surface treatments such as high-pressure spray coating or the application of engineering-grade reflective film (typically in yellow-and-black or red-and-white color schemes). Bollards are categorized into fixed and removable types; fixed bollards are permanently installed in a single operation, whereas removable bollards are equipped with locking mechanisms, allowing them to be deployed or removed as needed. Both types typically consist of a steel pipe and a base flange.
During installation, the necessity of embedding a foundation is determined by the specific ground conditions. Traditional installation methods utilize screws, steel anchors, or base flanges, while newer reinforcement techniques employ deep concrete embedding to enhance impact resistance and structural stability.
The placement and management of bollards are governed by relevant regulations, such as the Road Traffic Safety Law of the People's Republic of China.
Recent technological advancements include the use of highly reflective materials to enhance nighttime visibility and warning effectiveness, as well as innovative designs-such as flexible traffic bollards featuring internal spring mechanisms-capable of absorbing impact forces and automatically returning to their upright position.
