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Q345 Galvanized Rectangle Hollow Sections / Galvanized Rectangle Tube

Galvanized Rectangle Hollow Sections are steel sections that have been galvanized to enhance their resistance to corrosion. The galvanizing process involves coating the steel with a layer of zinc, which protects it from rust and environmental damage. These sections are widely used in construction, industrial applications, and other structural uses where strength and durability are essential. The rectangular shape of these hollow sections makes them ideal for a variety of applications, offering a combination of strength, stability, and aesthetic appeal.

Galvanized Rectangle Hollow Sections

Galvanized Rectangle Hollow Sections are steel sections that have been galvanized to enhance their resistance to corrosion. The galvanizing process involves coating the steel with a layer of zinc, which protects it from rust and environmental damage. These sections are widely used in construction, industrial applications, and other structural uses where strength and durability are essential. The rectangular shape of these hollow sections makes them ideal for a variety of applications, offering a combination of strength, stability, and aesthetic appeal.

Key Features of Galvanized Rectangle Hollow Sections

  • Corrosion Resistance: The galvanizing process adds a protective zinc coating to the steel, which acts as a barrier against rust and corrosion, making galvanized rectangle hollow sections suitable for outdoor and marine environments.
  • Strength and Durability: These hollow sections provide excellent strength-to-weight ratio, ensuring the structure can bear heavy loads while maintaining a lightweight profile for easier handling and installation.
  • Aesthetic Appeal: The clean, modern appearance of galvanized rectangle hollow sections makes them ideal for both structural and decorative applications, offering a polished finish that enhances the look of the final product.
  • Long-Term Performance: The protective zinc layer extends the lifespan of these steel sections, reducing the need for maintenance and offering a cost-effective solution for long-term use.
  • Ease of Fabrication: Galvanized rectangle hollow sections are easy to fabricate, weld, and cut, providing versatility in meeting various construction and manufacturing requirements.

Technical Specifications of Galvanized Rectangle Hollow Sections

ItemParameter
MaterialCarbon Steel, Structural Steel (Q235, Q345, S235, S355, etc.)
Thickness1.2 mm - 16 mm (Customizable)
Width20 mm - 300 mm (Customizable)
Height30 mm - 500 mm (Customizable)
Length6 m, 12 m, or Customizable
Tensile Strength≥ 400 MPa
Yield Strength≥ 250 MPa
Hardness130 - 160 HB
Surface TreatmentHot-Dip Galvanized
Coating Thickness40 µm - 100 µm (Customizable)
ApplicationsStructural Frames, Building Facades, Fencing, Furniture, Agricultural Equipment

Advantages of Galvanized Rectangle Hollow Sections

  • Superior Corrosion Resistance: The zinc coating significantly improves the resistance to rust, making galvanized rectangle hollow sections perfect for applications exposed to moisture, chemicals, and harsh environmental conditions.
  • Enhanced Durability: The galvanization process ensures that the steel sections can withstand wear and tear, extending the lifespan of the material and reducing maintenance needs.
  • Cost-Effective: By reducing the need for maintenance and replacements, galvanized rectangle hollow sections offer a long-term cost-effective solution for various applications.
  • Structural Strength: These sections are designed to provide excellent load-bearing capacity, making them suitable for use in heavy-duty applications such as construction, industrial frames, and infrastructure projects.
  • Versatility: Galvanized rectangle hollow sections are versatile and can be used in a wide range of applications, from building structures and furniture to agricultural and industrial equipment.

Common Applications of Galvanized Rectangle Hollow Sections

  • Construction: Used in the construction of structural frames for buildings, bridges, and other infrastructure projects, offering strength, durability, and protection against corrosion.
  • Fencing and Railings: Ideal for the creation of strong, long-lasting fences, gates, and railings, galvanized rectangle hollow sections provide reliable barriers that withstand harsh outdoor conditions.
  • Building Facades: Due to their aesthetic appeal, galvanized rectangle hollow sections are used in architectural applications, including facades and curtain walls, to create sleek, modern designs.
  • Furniture: In the furniture industry, galvanized rectangle hollow sections are used to create durable and stylish tables, chairs, and shelves with an industrial look.
  • Agricultural Equipment: These sections are used in the production of agricultural equipment and structures, including storage units, frames, and machinery that require durability and resistance to the elements.

Surface Treatment and Coating Options

  • Hot-Dip Galvanized: The most common method of galvanization, where the steel is submerged in molten zinc to form a protective coating that resists rust and corrosion. The thickness of the zinc layer can be customized based on the application.
  • Powder Coating: In addition to galvanization, powder coating can be applied to enhance both the appearance and durability of the sections, providing additional protection and color options.
  • Pickling and Passivation: A process that ensures the steel’s surface is clean and free of contaminants before galvanizing, which helps improve the adhesion of the zinc coating.
  • Painted: Galvanized rectangle hollow sections can also be painted for added protection and to meet specific design needs.

Frequently Asked Questions (FAQ)

1. Why should I choose Galvanized Rectangle Hollow Sections over non-galvanized steel?
Galvanized rectangle hollow sections offer superior protection against corrosion, making them more durable and longer-lasting than non-galvanized steel, especially in outdoor and industrial environments.

2. Are Galvanized Rectangle Hollow Sections weldable?
Yes, galvanized rectangle hollow sections can be welded. However, welding galvanized steel requires special techniques to prevent the zinc coating from burning off during the process. Proper ventilation and equipment are recommended.

3. What is the typical zinc coating thickness for these sections?
The zinc coating thickness typically ranges from 40 µm to 100 µm, depending on the specific environmental conditions and requirements. Custom coating thicknesses are available.

4. Can these sections be used for outdoor applications?
Yes, galvanized rectangle hollow sections are ideal for outdoor use due to their excellent corrosion resistance. The zinc coating ensures that the steel can withstand exposure to moisture, saltwater, and other harsh environmental factors.

5. What industries use Galvanized Rectangle Hollow Sections?
These sections are used in a wide variety of industries, including construction, agriculture, infrastructure, furniture manufacturing, and industrial applications. Their strength, corrosion resistance, and versatility make them suitable for many different uses.


Galvanized Rectangle Hollow Sections offer a highly durable, versatile, and cost-effective solution for a wide range of applications. Whether used in construction, fencing, agricultural equipment, or furniture, their combination of strength, corrosion resistance, and ease of fabrication make them an ideal choice for both structural and aesthetic purposes. For more information or to get a quote, feel free to contact us.



Q: Are You Manufacture or Trade Company?

A: We are the professional manufacturer of steel products located in China. Welcome to contact us and visit our factory before you place orders.

Q: How do you guarantee the quality?

A: We are the professional manufacturer of steel products located in China. Welcome to contact us and visit our factory before you place orders.

Q: Can I get free samples?

A: Of course you can. We can produce according to your samples or technical drawings. Contact us by whatsapp or email to get free samples and you will get the sample after 3-7 working days.

Q: What is the MOQ? 

A: If you are scheduling to place a small quantity order or trial order, feel free to contact us, we can meet your requirements.

Q: Can you OEM or ODM?

A: Yes, we have a strong developing team. The products can be made according to your request.

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