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Aluminum Square Tube

What Is Aluminum Square Tube?

 

 

Aluminum square tube is a hollow, square aluminum profile with a uniform wall. It is usually produced by an extrusion process.Precision-extruded square tubes for structural framing, architectural facades, and automation equipment. Available in sharp or radius corners. Custom wall thicknesses and precise cut-to-length services.

 

ASTM B221 Compliant

Anodizing & Powder Coating

ISPM-15 Wooden Case Packing

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 Different Series Of Aluminum Square Tubes in Stock

 

Model Aluminum Square Tube/Pipe
Material Grade 1000 series: 1050, 1060, 1070, 1100, etc.
2000 series: 2024, etc.
3000 series: 3003, 3105, etc.
5000 series: 5052, 5083, 5754, etc.
6000 series: 6061, 6063, 6082, etc.
7000 series: 7075, etc.
Size Outer Diameter: 3-250mm
Wall Thickness: 0.3-50mm
Length: 10mm-6000mm
Customizable
Surface treatment Anodizing, Electrophoresis Coating, Powder Coating, Sandblasting/Polishing, Brushing, Electroplating/Chemical Oxidation
Dimensional processing Cutting, Punching/Slotting, Bending, Welding, CNC Machining, Assembly
Surface colors Nature, Silver, Bronze, Champagne, Black, Golden, etc.
Status O, H, T5, T6, etc.
Usage Aluminum windows, doors, decorations, buildings, curtain walls, etc.
Certificate ISO 9001

 

Chemical Properties of Aluminum Square Tube

 

Alloy Si Fe Cu Mn Mg Cr Zn Ti Al
1050 ≤0.25 ≤0.40 ≤0.05 ≤0.05 ≤0.05 - ≤0.05 ≤0.03 ≥99.50
1060 ≤0.25 ≤0.35 ≤0.05 ≤0.03 ≤0.03 - ≤0.05 ≤0.03 ≥99.60
1070 ≤0.20 ≤0.25 ≤0.04 ≤0.03 ≤0.03 - ≤0.04 ≤0.03 ≥99.70
1100 Si + Fe ≤ 0.95 - 0.05–0.20 ≤0.05 - - ≤0.10 - ≥99.00
2024 ≤0.50 ≤0.50 3.8–4.9 0.3–0.9 1.2–1.8 ≤0.10 ≤0.25 ≤0.15 Bal
3003 ≤0.60 ≤0.70 ≤0.20 1.0–1.5 - - ≤0.10 - Bal
3105 ≤0.60 ≤0.70 ≤0.30 0.3–0.8 0.2–0.8 ≤0.20 ≤0.40 ≤0.10 Bal
5052 ≤0.25 ≤0.40 ≤0.10 ≤0.10 2.2–2.8 0.15–0.35 ≤0.10 ≤0.10 Bal
5083 ≤0.40 ≤0.40 ≤0.10 0.4–1.0 4.0–4.9 0.05–0.25 ≤0.25 ≤0.15 Bal
5754 ≤0.40 ≤0.40 ≤0.10 ≤0.50 2.6–3.6 ≤0.30 ≤0.20 ≤0.15 Bal
6061 0.4–0.8 ≤0.70 0.15–0.40 ≤0.15 0.8–1.2 0.04–0.35 ≤0.25 ≤0.15 Bal
6063 0.2–0.6 ≤0.35 ≤0.10 ≤0.10 0.45–0.9 ≤0.10 ≤0.10 ≤0.10 Bal
6082 0.7–1.3 ≤0.50 ≤0.10 0.4–1.0 0.6–1.2 ≤0.25 ≤0.20 ≤0.10 Bal
7075 ≤0.40 ≤0.50 1.2–2.0 ≤0.30 2.1–2.9 0.18–0.28 5.1–6.1 ≤0.20 Bal

 

Mechanical Properties of Aluminum Square Tube (MPa)

 

Alloy Temper Tensile Strength (MPa) Yield Strength (MPa) Elongation (%)
1050 O 60–95 ≥20 ≥25
1060 O 70–110 ≥25 ≥25
1070 O 75–110 ≥30 ≥25
1100 O 90–110 ≥35 ≥20
2024 T4 420–470 ≥270 ≥10
3003 H14 140–180 ≥115 ≥5
3105 H14 150–200 ≥130 ≥5
5052 H32 210–260 ≥160 ≥10
5083 H111 270–330 ≥125 ≥12
5754 H22 190–240 ≥80 ≥12
6061 T6 290–340 ≥240 ≥10
6063 T5 160–205 ≥110 ≥8
6082 T6 300–350 ≥250 ≥10
7075 T6 510–570 ≥430 ≥8

 

 
Advantages of Aluminum Square Pipe
 
Corrosion resistance

Many people choose to use aluminum square tubing because of its ability to resist corrosion. Aluminum is corrosion-resistant because it naturally develops a protective layer on its surface. This self-protecting characteristic makes aluminium corrosion-resistant. Unless exposed to some substance or condition that destroys this protective oxide coating, the metal remains fully protected against corrosion. This means that aluminum square tubing will not rust or lose structural integrity over time, even in particularly harsh environments.

Lightweight

Another great advantage of using aluminum square tubing is its low weight compared to tubing made of other materials. Aluminum is only 1/3 the weight of steel, making it easier and more cost-effective to use and transport. Even though it is the lightest aluminum, it is a very strong metal and has a high strength-to-weight ratio. This property permits the design and construction of strong, lightweight structures that are particularly advantageous for anything that moves—space vehicles and aircraft as well as all types of land- and water-borne vehicles. Light weight contributes to low handling and shipping costs, whatever the application.

Reflectivity

Smooth aluminum is highly reflective of the electromagnetic spectrum, from radio waves through visible light and on into the infrared and thermal range. It bounces away about 80% of the visible light and 90% of the radiant heat striking its surface. The high reflectivity gives aluminum a decorative appearance. When used in ceiling decoration materials, the aluminum square tube can evenly reflect light and make the room bright.

Nontoxic characteristic

The fact that aluminum is nontoxic was discovered in the early days of the industry. It is this characteristic that permits the metal to be used in cooking utensils without any harmful effects on the body. In addition, aluminum has no special smell, so there is no need to worry about releasing toxic gases when using aluminum square pipes as decoration materials.

Versatility

Aluminum is one of the most versatile metals and can be extruded into various shapes and sizes to suit specific needs. Through the extrusion process, complex aluminum square tube shapes are created to suit the most unique applications. In traditional ceiling decoration, as long as people look up, the threaded pipes in the house will be exposed to the line of sight, which makes the decoration space very unsightly, and it is very easy to cause safety hazards. And if it is decorated with an aluminum square ceiling, it can take advantage of the hollow characteristics of the pipe to arrange various wire pipes, which is beautiful and at the same time very safe, fireproof, and waterproof.

 

Application of Aluminum Square Pipe

 

 
 

Structural support

Aluminum square pipes are often used in the construction of building frames. Their high strength-to-weight ratio makes them ideal for creating lightweight yet durable structures. This is especially beneficial for large buildings where weight is a major concern. For example, the burj khalifa, the world’s tallest building, uses aluminum square pipes extensively in its construction.

 
 

Facades and cladding

Aluminum square pipes can also be used to create beautiful and modern facades and cladding for buildings. They can be anodized or painted in a variety of colors to create unique and eye-catching designs. Additionally, aluminum square pipes are highly weather-resistant, making them ideal for use in exterior applications.

 
 

Skylights and roofs

Aluminum square pipes can be used to create lightweight and durable skylights and roofs. This allows for natural light to enter the building while also providing protection from the elements. Aluminum square pipes are also recyclable, making them a more environmentally friendly choice than other materials.

 
 

Interior design

Aluminum square pipes can also be used in a variety of interior design applications. They can be used to create furniture, partitions, and other decorative elements. Aluminum square pipes can be powder-coated to create a variety of finishes, making them ideal for a variety of design styles.

 
 

Transportation

Used in vehicle frames, chassis, roll cages, and structural components in the automotive, aerospace, and marine industries due to its light weight and high strength.

 
 

Furniture

Used in the manufacture of furniture frames, shelves, tables, and racks for residential, commercial, and industrial settings due to its light weight, durability, and modern appearance.

 
 

Pipes and Tubes

Used as conduits for fluids, gases, or wires in plumbing, HVAC systems, electrical enclosures, and machinery that require corrosion resistance and light weight.

 
 

DIY Projects

Popular in DIY projects, hobbyist applications, and small-scale manufacturing due to its ease of fabrication and versatility to build structures, frames, shelving units, and other custom solutions.

 

Process of Aluminum Square Pipe
 

Extrusion: The production process starts with extruding an aluminum alloy billet. The billet is heated to a specific temperature and then passed through a forming die under high pressure. The die imparts the desired cross-sectional shape (such as a square) to the aluminum, forming a continuous length of aluminum profile.

 

Cooling: After extrusion, the aluminum profile is cooled using air or water to solidify the metal and stabilize its shape. This cooling process is essential to prevent the profile from deforming or bending.

 

Cutting: After the extruded aluminum profile cools and solidifies, it is cut into specific lengths according to customer requirements. Use precision cutting equipment (such as saws or CNC machines) to achieve accurate and consistent cutting.

 

Surface treatment: The surface of the aluminum square tube can be subjected to a variety of surface treatments to improve appearance, corrosion resistance, and durability. Common surface treatments include:
Anodizing: An electrochemical process that forms a protective oxide layer on the surface of aluminum, enhancing corrosion resistance and having a decorative effect.
Powder coating: A dry powder coating is applied to the surface of the aluminum and then cured in an oven. Powder coating provides a durable decorative finish in a variety of colors and textures.
Mill Finish: Some aluminum square tubes may be left with a natural mill finish, preserving the look of extruded aluminum without any additional surface treatment.

 

Final Inspection: After the surface treatment process is complete, the aluminum square tubes undergo a final inspection to ensure that they meet quality standards and customer specifications. This inspection may involve Visual inspection, dimensional measurements, and mechanical testing to check for defects, surface finish, dimensions, and mechanical properties.

 

GNEE Services
 

When sourcing square tubes, precise dimensions and specific features matter. We customize every detail to match your engineering blueprints.

Precise Dimensions (OD x OD x WT):

We supply a vast range of sizes from small profiles (e.g., 10x10x1mm) to heavy-duty structural tubes (e.g., 250x250x20mm). We clearly define dimensions by Outer Diameter (A) x Outer Diameter (B) x Wall Thickness (WT). Custom wall thicknesses are easily extruded to balance weight and load-bearing capacity.

Corner Profiles (Sharp vs. Radius):

Sharp Corners (Square Corners): Extruded with crisp, 90-degree outer and inner angles. Perfect for flush architectural joints, glass frames, and tight-tolerance CNC assemblies.
Radius/Rounded Corners: Extruded with a rounded edge (e.g., R1 to R5). Ideal for structural framing, handrails, and automated equipment bases where safety, stress distribution, and aesthetics are prioritized.

 

Surface Treatments (Protective & Decorative):
Mill Finish: The raw, as-extruded appearance. Best for hidden structural parts or if you plan to do your own coating.
Anodized (Clear / Silver / Color): Provides an exceptionally hard, corrosion-resistant oxide layer (typically 10-25 microns). Highly recommended for the humid climates of the Middle East and Southeast Asia.
Powder Coated: Offers excellent UV and weather resistance in customized RAL colors for architectural facades.

 

CNC Cutting:

While our standard export lengths are 5.8 meters (for 20 ft. containers) and 6 meters (for 40 ft. containers), we offer in-house CNC sawing. We can deliver exact cut-to-length pieces (e.g., exactly 450mm ±1mm) with perfectly square, burr-free ends, ready for your immediate assembly.

 

Aluminum Square tube for sale
 
Aluminum Square tube suppier

Why Choose GNEE as Your Square Tube Sourcing Partner?


Precision CNC Cutting:
Don't waste your internal labor hours cutting 6-meter tubes. Equipped with automatic double-head CNC saws, we provide exact cut-to-length services. Every square tube is delivered with perfectly flat, burr-free ends, strictly within a ±1mm tolerance. They arrive ready to be dropped straight into your CNC machines or welding fixtures.

 

Packaging:
Because square tubes have flat surfaces, they are highly prone to surface friction and scratching during ocean freight. We have engineered a fail-safe packaging system:
EPE Foam Interleaving: Every single tube is separated by Pearl Cotton (EPE foam) to prevent metal-to-metal rubbing.
Waterproof Sealing: Bundles are tightly wrapped in heavy-duty waterproof kraft paper and multi-layered plastic film with internal desiccants to prevent "white rust" in humid sea air.
Heavy-Duty Wooden Cases: Packed securely into solid, ISPM-15 fumigated wooden cases—never just open pallets. This prevents crushing during heavy port handling in Dubai, Jeddah, or Port Klang.

 

Material Traceability (Free MTC):
We take the guesswork out of your supply chain. Every batch of aluminum square tubes undergoes strict spectrometer testing to verify chemical composition (ensuring no mixed scrap). We provide a certified EN10204 3.1 Mill Test Certificate (MTC) along with your shipping documents, giving your engineers complete peace of mind.

 

6063 aluminum square tube Packaging
6063 T5 aluminum pipe
 

 

 
Our Factory
 

Henan Gnee New Material Co., Ltd. is a modern supply chain enterprise with aluminum processing, sales, and distribution as its core industries. It was established in 2008. After about 18 years of development, it has customers in more than 100 countries and regions around the world. The company specializes in the production of high-quality aluminum products, including aluminum foil, aluminum tubes, aluminum alloy plates, aluminum rods, aluminum coils, etc.

 

ALUMINUM TEAM4
productcate-1-1

GNEE ALUMINUM

 

 
FAQ
 

 

① What aluminum alloys are available for square pipes?

Answer: For square tubes, the 6000 series (specifically 6061, 6063, and 6082) accounts for 90% of industrial and architectural applications due to its excellent extrudability and strength. We also manufacture 7075 for high-stress aerospace requirements and 5083 for marine-grade corrosion resistance.

② What is the difference between 6061 and 6063 square tubes?

Answer:
6063 (Architectural Grade): Offers superior surface finish and responds exceptionally well to anodizing. It is highly extrudable, making it perfect for complex shapes, window frames, and decorative trim.
6061 (Structural Grade): Has a much higher yield strength than 6063. It offers superior machinability and structural integrity, making it the standard choice for heavy-duty frameworks, machine bases, and automotive parts.

③ What sizes and wall thicknesses can GNEE produce?

Answer: We produce square tubes ranging from small 10mm x 10mm profiles up to massive 250mm x 250mm structural beams. Wall thicknesses (WT) range from a lightweight 1mm up to 25mm. If you need a non-standard size, we can design and cut a custom extrusion die within 7-10 days.

④ What surface finishes are available?

Answer: We supply tubes in Mill Finish (bare aluminum), Clear/Color Anodized (for enhanced corrosion resistance and aesthetics, film thickness 10-25 μm), Powder Coated (custom RAL colors), and Sandblasted finishes to meet both functional and decorative requirements.

⑤ What certifications does GNEE hold?

Answer: Our manufacturing facility is ISO 9001:2015 certified. All our aluminum square tubes are strictly extruded and tested in compliance with international standards, including ASTM B221, EN 755, and GB/T 6892.

⑥ How long is the production lead time?

Answer: For standard sizes and alloys (like 6061/6063) available in our billet inventory, standard production and packing take 7 to 10 days. For custom sizes requiring a new extrusion die or large-volume orders (over 20 tons), the lead time is typically 15 to 25 days.

⑦ Do you provide MTC (Material Test Certificate)?

Answer: Absolutely. Material traceability is our core principle. A genuine EN 10204 3.1 Mill Test Certificate covering precise chemical composition and mechanical properties (Yield Strength, Tensile Strength) is provided free of charge with every shipment.

Henan Gnee New Material Co., Ltd. is one of the most professional aluminum square tube manufacturers and suppliers in China, featured by quality products and competitive price. Please rest assured to buy aluminum square tube for sale here from our factory.

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