Scaffolding is a temporary support structure commonly used on construction sites to erect and support workers, materials, and equipment. The steel pipe is the most important component of the scaffolding as it bears the main load. To ensure the safety and stability of scaffolding, steel pipes need to meet a series of requirements and standards.

1. Steel pipes need to meet strength and stability requirements. According to national and regional standards, the material and strength of steel pipes need to meet certain standards, such as Q235B, Q345B, etc. In addition, the diameter, wall thickness, and length of the steel pipe also need to meet the specified dimensional requirements to ensure its load-bearing capacity and stability.

2. Steel pipes need to have good corrosion resistance. Since scaffolding is often exposed to outdoor environments, steel pipes need to be able to resist various weather conditions and chemicals, such as rain, sunlight, acid rain, etc. Common protection measures include hot-dip galvanizing, plastic spraying, etc.

3. Steel pipes also need to have good connection properties. Steel pipes in scaffolding systems are usually assembled through threaded connections or fastener connections. Therefore, the connection port of the steel pipe needs to have good accuracy and stability to ensure that the entire scaffolding system is firmly connected.

4. Steel pipes also need to pass qualified quality testing and certification. Relevant countries and regions usually have specialized agencies to conduct quality testing and certification to ensure that the quality of steel pipes meets standard requirements. Common certification standards include ISO 9001 quality management system certification, ISO 14001 environmental management system certification, etc.

5. Steel pipes need to be used and maintained correctly. The construction and use of scaffolding need to follow relevant safety operating procedures, such as correct construction of scaffolding, reasonable placement of loads, regular inspection and maintenance, etc.