How to choose square tube?

When choosing a square tube, you need to consider the following aspects:

1. Material selection

Carbon steel: Suitable for most common structures and building applications, with high strength and hardness.

Stainless steel: Suitable for environments with high requirements for corrosion resistance, such as chemical plants and marine environments.

Alloy steel: Suitable for special applications with high strength and high temperature resistance.

2. Specifications

Wall thickness: Select the appropriate wall thickness according to the load-bearing capacity and the use environment. Generally speaking, the thicker the wall, the higher the strength of the square tube.

Side length and height: Select the appropriate size according to the specific structural requirements.

3. Surface treatment

Hot-dip galvanizing: Suitable for environments that require corrosion protection, forming a protective layer on the surface to extend the service life.

Painting: Suitable for general anti-rust needs, but the anti-corrosion performance is not as good as hot-dip galvanizing.

Electroplating: Suitable for applications that require beauty and corrosion resistance.

4. Quality standards

Domestic standards: such as GB/T 6728, GB/T 3094, etc., to ensure that the square tube meets national standards.

International standards: such as ASTM A500, EN 10210, etc., suitable for export or specific project needs.

5. Application scenarios

Building structures: such as brackets, frames, etc.

Machinery manufacturing: such as skeletons and brackets of mechanical equipment.

Other uses: such as automobile manufacturing, home decoration, etc.

6. Supplier selection

Reputation: Choose suppliers with good reputation to ensure stable product quality.

Service: High-quality after-sales service can ensure that problems encountered during use are solved in a timely manner.

7. Price

On the premise of ensuring quality, choose products with high cost performance, and pay attention to avoid too cheap and inferior products.

Combining the above aspects, choosing the right square tube according to specific needs and use environment can ensure the safety and service life of the structure.