Types of steel pipes commonly used in construction machinery

Construction engineering machinery requires the use of a large number of steel pipes during construction. As a kind of building material, the type and quality of steel pipes are of great significance to the construction quality of the machinery and the safety of workers. This article will introduce several types of steel pipes commonly used in construction machinery and how to choose suitable steel pipes.

Types of steel pipes:

1. Square tube
Square tube is a hollow rectangular cross-section steel tube. Common specifications are 50mm * 30mm and 60mm * 40mm. Square tubes are mainly used for some light construction machinery such as bridges, scaffolding, etc.

2. Round tube

The round tube (seamless tube) is a hollow circular cross-section steel tube, and its smaller diameter can be used for support poles and load-bearing columns of some platforms. Conventional round pipes have relatively many uses, such as steel pipe scaffolding, telescopic door tracks, billboard columns, etc. Commonly used specifications include 48mm, 60mm, and 76mm.

3. Rectangular tube
Rectangular tube has good pressure resistance, and the conventional specifications are 60mm * 40mm, 70mm * 50mm, 80mm * 60mm, etc. Rectangular steel pipes are often used as supports and bearing supports for some transmission components.

4. Graphite tube
Graphite tube is a polymer-based material with excellent self-lubricating, wear-resistant and other properties, as well as good electrical and thermal conductivity. Graphite tubes are often used in transmission components of some high-end machinery, such as hooks and conveyor belts in engineering machinery.

Steel pipe selection:

1. Determine the bearing capacity: When selecting steel pipes, it is necessary to determine the bearing capacity of the steel pipe according to the bearing capacity of the machine and the requirements of the usage scenario to avoid causing safety accidents during use.

2. Determine the shape of the steel pipe: The shape of the steel pipe is also an important factor in selection. Steel pipes of different shapes have different load-bearing capacities and usage scenarios. The selection needs to be based on the specific conditions.

3. Select materials: Common steel pipes currently on the market include Q235, Q345, etc. Among them, Q235 is an ordinary carbon structural steel and is mainly used for the manufacture of some general structural parts, while Q345 has excellent pressure resistance and toughness. , suitable for manufacturing parts with relatively high pressure and high mechanical strength requirements.

In short, when selecting steel pipes for construction engineering machinery, it is necessary to select based on factors such as its actual use environment, bearing capacity, shape, and material to ensure the construction quality of the machinery and the safety of workers.