Seamless Extruded Round Section Aluminum Tube | Pipe

Extruded round aluminum tubes, also known as pipes, are lightweight, durable, and highly versatile components widely used across a variety of industries. Manufactured through the extrusion process, these aluminum tubes feature a seamless structure with excellent dimensional accuracy, making them ideal for applications that require strength, precision, and corrosion resistance.
HTS-ALU specializes in high-quality extruded round aluminum tubes tailored to client needs. Using advanced technology, we offer tubes in various sizes and thicknesses, made from premium alloys like 1050, 6061, 6063, and 7075. Our products excel in structural, industrial, and decorative applications, ensuring exceptional performance and reliability.
Round Section Aluminum Tube Manufacturer
HTS-ALU offers a wide range of round aluminum tubes with ready-to-use molds and standard stock. We also specialize in custom designs, including large or small tubes, soft aluminum tubes, and special shapes like heat sink or pneumatic cylinder tubes, to meet unique client needs.
Custom Aluminum Round Tube Specification
Outer Diameter (OD) | 6 mm – 300 mm (Custom sizes available) |
---|---|
Wall Thickness (WT) | 0.5 mm – 20 mm (Ultra-thin or thick walls on request) |
Length | Up to 6 meters (Custom lengths available) |
Aluminum Alloys | 1100, 3003, 5052, 6061, 6063, 7075 (Other alloys on request) |
Temper | T3, T5, T6, O (Other tempers available) |
Surface Finish | Mill finish, Anodized, Powder Coated, Polished, Electrophoretic |
Tolerances | As per ISO 2768 or tailored to specific standards |
Aluminum Cylinder Processing Capabilities
As a leading aluminum extrusion manufacturer based in China, we are committed to providing high-quality aluminum profiles for a wide range of industries. Our capabilities start with custom mold design and manufacturing, ensuring precise extrusion shapes that meet the specific needs of our clients. From raw extrusion to surface finishing and advanced machining, our fully integrated manufacturing processes enable us to deliver aluminum profiles that meet exacting standards and cater to the unique requirements of each project.

Mold Design and Development
We possess the expertise to design and produce extrusion molds in-house, ensuring precision and efficiency in aluminum profile manufacturing. Our experienced team works closely with clients to develop custom molds based on drawings or samples, ensuring optimal performance for their specific requirements. Typically, the mold production process takes about 7 days, after which we provide samples for client confirmation before beginning full-scale production.

Aluminum Profile Extrusion
Our production facility houses over 40 advanced extrusion lines, featuring cutting-edge equipment such as a powerful 6000-ton extrusion press. This enables the creation of aluminum profiles in various sizes and forms, ranging from standard industrial applications to specialized products like thermal break profiles for high-end doors and windows. The flexibility of our extrusion capability ensures we can cater to a broad spectrum of industries, including construction and precision engineering.

Surface Treatment
With advanced surface treatment capabilities, our facility features 1 anodizing and electrophoretic coating line for enhanced corrosion resistance, 4 powder coating stations (including 2 horizontal and 2 vertical units) for durable finishes, 1 PVDF fluorocarbon spray line for superior weather resistance, 6 wood grain transfer lines for elegant decorative effects, and 2 sandblasting units for optimal surface preparation.

Machining and Fabrication
To provide complete aluminum profile solutions, we offer extensive further processing capabilities. Our services include CNC machining, milling, threading, drilling, precision cutting, punching, welding, assembly, as well as surface marking options such as silk-screen printing and laser engraving for logos or identification. This comprehensive range of fabrication options allows us to deliver ready-to-use profiles tailored to exact project specifications, offering unmatched flexibility, traceability and reliability to our customers.
Standard Aluminum Tubing Specification
Diameter | Thickness | Diameter | Thickness | Diameter | Thickness |
---|---|---|---|---|---|
6 | 0.8/0.9/1 | 85 | 0.9/1.2/3/5/6.5/7.5/10 | 241 | 19 |
1 | 1 | 12.5/15/20/25/27.5 | 245 | 10/15 | |
8 | 1/1.2/1.5/1.9/2 | 86 | 5 | 250 | 5/6/10/20/25/30 |
9 | 1 | 87 | 7/8 | 40/50/60 | |
10 | 1/1.2/1.5/2/3 | 89 | 2.5/4/4.5/5/6/8 | 254 | 12.7/15.8/25.5 |
11 | 1/1.2/1.5 | 90 | 1.2/2/3/3.5/4/5/6/10 | 255 | 24 |
12 | 1/1.2/1.5/2/2.5/3/3.5 | 12.5/15/17.5/20 | 260 | 8/10/14/20/30 | |
13 | 1.3/2 | 25/27.5/30 | 35/40/45/50/60 | ||
14 | 1/1.2/1.5/2/2.5/3 | 92 | 0.9/31 | 261 | 51 |
15 | 1/1.2/1.5/2/2.5/3/4 | 93 | 3/7 | 263 | 6/57 |
16 | 1/1.2/1.5/2/3/4/4.1/5 | 95 | 2.5/5/10/12.5/15 | 265 | 30 |
18 | 1/1.2/1.5/2/2.5/3 | 17.5/18.5/20/25/32.5 | 268 | 8 | |
3.5/4/5 | 96 | 17 | 270 | 10/15/20/30/35/40/50 | |
19 | 1/1.2/1.5/2/3/4 | 99 | 24.5 | 273 | 9.1/9.5 |
19.5 | 1 | 100 | 2/2.5/3/3.5/4/5/6/8/10 | 280 | 10/15/17.5/20/30 |
20 | 1/1.2/1.5/2/2.5/3/4/5 | 12.5/15/18/20/25/30 | 40/50/60 | ||
7.05 | 102 | 3/4/5 | 286 | 8 | |
22 | 0.9/1/1.2/1.5/2/2.5/3 | 105 | 3/5/10/12.5/15/20/27.5 | 290 | 20/30/40/50/60 |
3.5/4/4.8/5/6/6.5 | 108 | 3/4/5/8 | 292 | 19 | |
22.2 | 1.5 | 110 | 3/4/4.5/5/10/12.5/15 | 298 | 21.5 |
24 | 1/1.5/2/2.5/3/4 | 20/25/29/30 | 300 | 6/10/12.5/15/20 | |
5/6.25/6.5 | 114 | 5/6 | 30/40/50/60/100 | ||
25 | 1/1.2/1.3/1.5/2/2.5/3 | 115 | 5/6/7/10/12.5/15/20 | 305 | 14.5 |
3.5/4/5/6/7/8/9/9.55/10 | 118 | 21.5 | 306 | 8 | |
26 | 1/2/2.5/3/4/5/7 | 120 | 2/3/4/5/7.5/8/10/15/20 | 310 | 6/20/25/30/35 |
27 | 1.5/2/2.5/3/3.5/4/5 | 25/30/32.5/37.5/40 | 40/45/50/60 | ||
28 | 1/1.2/1.5/2/2.5/3/4 | 122 | 27/37 | 313 | 6 |
5/7/9/11.05 | 125 | 3/5/10/15/19.7 | 315 | 18 | |
29 | 2/3 | 20/25/30/40 | 317 | 35 | |
30 | 1/1.2/1.5/1.85/2/2.5/3/4 | 128 | 39 | 320 | 10/15/20/25/30 |
4.5/5/6/7/8/9/10/11/11.5 | 130 | 3/5/7/8/10/12.5/15 | 40/50/55/60 | ||
32 | 1/1.4/1.5/2/2.5/3/3.5/4 | 20/25/30/40 | 322 | 8 | |
5/6/6.5/7/8/9/10.5/13.05 | 131 | 6 | 323 | 8 | |
33 | 3/4 | 133 | 4/5/6/10/15 | 325 | 11.5 |
34 | 1/1.5/2/2.5/2.55/3/3.5 | 135 | 5/7.5/10/15/17.5 | 330 | 20/30/40/50/60 |
4/5/8/8.5 | 136 | 24 | 331 | 25.4 | |
35 | 1/1.5/2/2.5/3/4/5 | 140 | 3/5/7/10/15/20/25/30 | 332 | 6 |
6/7/8/10/12.5 | 32.5/40/50 | 336 | 45 | ||
36 | 1/1.5/2/3/4/5/6.5 | 142 | 34 | 338 | 29 |
37 | 5 | 144 | 34 | 340 | 10/20/30/40/48/50/60 |
38 | 1/1.5/2/2.5/3/3.3/4 | 145 | 5/8/9.5/15/20/22.5 | 345 | 117.5 |
5/6/7/8/10/12.5 | 146 | 3/10.25/37 | 347 | 15 | |
39 | 1/2/3 | 150 | 2/3/5/6/7/8/10/12.5/15 | 348.4 | 6.7 |
40 | 1/1.5/2/2.5/3/4/5/6 | 20/25/30/35/40/46/50 | 350 | 12/25/30/37.5 | |
7/7.5/8/10/12/12.5 | 152 | 26 | 40/50/60 | ||
41 | 5/13 | 153 | 11/30 | 351 | 38 |
42 | 2/2.5/3/3.5/4/5 | 155 | 10/12.5/15/17.5/20/25 | 356 | 10.5 |
6/7/8/9/10/11/15 | 156 | 3 | 360 | 10/30/40/50/60 | |
45 | 1/1.5/2/3/4/4.5/5/6/6.5 | 160 | 2/2.4/3/4/5/7/8/10 | 361 | 25.5 |
7/8/8.5/10/12.75/17.5 | 12/15/20/25/30/35/40 | 368 | 8 | ||
46 | 4/6/10/15.25 | 45/50/60 | 370 | 15/30/40/50/60 | |
47 | 6 | 161 | 10 | 376 | 6/8 |
48 | 1/2/3/4/5/5.5/6/7/10/15 | 165 | 10/15/20/25/37 | 380 | 30/40/50/60 |
49 | 2.5/6/17 | 167 | 23 | 384 | 9 |
50 | 1/1.2/1.5/1.9/2/2.5 | 168 | 5/6.5/6.8/18/22 | 390 | 8/30/40/50/60 |
3/4/5/6/7/7.5/8/9/10 | 169 | 10 | 393 | 18 | |
12.5/15/15.5/20 | 170 | 3/5/8/10/15/20/25 | 397 | 54.5 | |
52 | 2/3/4/5/7/9/10.5/11/12 | 30/40/50/60 | 400 | 10/30/38/40/50/60/10 | |
53 | 1.5 | 171 | 51 | 402 | 6/11 |
54 | 6/8/10/12/15/17 | 172 | 7/31.5 | 406 | 8 |
55 | 1/2/2.5/3/5/7/7.5/8 | 175 | 10/15/20 | 410 | 30/40/50/60 |
8.5/10/12.5/15/15.5 | 176 | 10 | 411 | 30 | |
56 | 6/15/19 | 177.8 | 1.8 | 420 | 30/40/50/60/100 |
57 | 2.4/3/4/5/6 | 180 | 2.5/3/5/6/8/10/15/20 | 430 | 30/40/50/60 |
58 | 4/15 | 25/30/38/40/45/50/60 | 435 | 37.5 | |
59 | 6/17.5 | 184 | 3/8/12 | 440 | 30/40/50/60/110 |
60 | 1/1.5/2/2.5/3/4/5/6 | 185 | 4/5/10/15/20/25/30 | 450 | 10/30/40/50/60/100 |
7/8/9/10/12.25/15 | 186 | 23/41.5 | 452 | 9 | |
15.25/19.5/20/21/22.5 | 190 | 3/5/10/11/15/20/25/30 | 460 | 30/40/50/60 | |
61 | 6 | 40/50/60 | 461 | 8 | |
62 | 10/11 | 192 | 6/12 | 468 | 32 |
63 | 1/2/5 | 195 | 10/15/20 | 470 | 8/30/40/50/60 |
64 | 3 | 198 | 25 | 480 | 30/40/50/60 |
65 | 1/2/3/5/8/10/12.5/15 | 200 | 3/5/7/8/10/15/20/25 | 490 | 30/40/50/60 |
16.75/20 | 30/32.5/40/50/57/60 | 500 | 8/30/40/50/60/100 | ||
66 | 13/14/16 | 201 | 11 | 508 | 8 |
68 | 5/14 | 203.2 | 25.4 | 510 | 30/40/50/60 |
69 | 15 | 205 | 12.5/32.5 | 512 | 8 |
70 | 1.2/2/3/4/5/7/7.5/8/10 | 206 | 35.25 | 514 | 7 |
11/12.5/15/17/20/25 | 210 | 5/10/15/20/25/27.5/30 | 517 | 20 | |
71 | 10 | 31.5/35/40/50/60 | 520 | 30/40/50/60 | |
72 | 2/6 | 211 | 5.5 | 526 | 8 |
73 | 1.51 | 213 | 6 | 530 | 30/40/50/60 |
74 | 15.5 | 215 | 31.5/35 | 536 | 8 |
75 | 1.2/2/3/5/6/7.5/10/15 | 218 | 12 | 540 | 8/30/40/50/60 |
17.5/20/25 | 219 | 6/12.7 | 550 | 30/40/50 | |
76 | 2/3/4/5/6/7/8/10/11/13 | 219.8 | 8.18 | 560 | 30/40/50 |
77 | 6.5 | 220 | 5/10/15/20/22.5/25/30 | 570 | 8/30/40/50 |
80 | 1.2/1.5/2/3/3.2/4/5/6/8 | 32.5/40/50/57.5/60 | 580 | 30/40/50 | |
9.1/10/14/15/20/25/30 | 225 | 15 | 590 | 30/40/50 | |
81 | 16 | 230 | 5/9/10/15/18/20/25 | 600 | 8/30/40/50 |
82 | 8/15 | 30/35/36.5/40/50/60 | |||
83 | 1.5/5 | 240 | 5/10/16/20/30/35 | 626 | 8 |
84.5 | 3.25/7.75 | 40/50/60 |
Factory Show
Our factory features 40 extrusion lines for aluminum profiles, along with advanced surface treatment facilities including anodizing, electrophoresis, spraying machines, sandblasting, and wood grain printing. We also have casting furnaces, aging and annealing furnaces, water cooling, and machining equipment, ensuring efficient production and high-quality finishes.
Production Process of Round Aluminum Tubes
The production of extruded round aluminum tubes involves the extrusion process, which ensures precision and high-quality products tailored to various applications. The steps are outlined as follows:
Extrusion Forming
Heated aluminum billets are placed into the extrusion press, where high pressure forces the aluminum material through the die opening to create the desired circular cross-section. The die determines the outer diameter, inner diameter, and wall thickness of the aluminum tube.

Cooling and Straightening
After extrusion, the aluminum tube is rapidly cooled using water baths or fans to solidify and maintain its shape. The cooled tubes are then passed through a stretching machine to correct any distortion and ensure straightness.
Cutting to Length
The extruded aluminum tubes are cut into specific lengths based on customer requirements, ensuring the final product is tailored to individual project needs.
Surface Finishing (Optional)
To enhance the performance and appearance of the aluminum tubes, various surface treatments can be applied, such as:
Anodizing: For added corrosion resistance and decorative finishes.
Electrophoretic Coating: For uniform, durable surface protection.
Powder Coating: To achieve specific colors and weather resistance.
Polishing: For a smooth and shiny finish.

Special Processing (Optional)
Additional processes can be applied depending on the application, including:
Machining: For precision modifications and custom features.
Bending: To form non-linear shapes as per design.
Welding: For creating assemblies or non-standard configurations.

Alloys for Round Aluminum Tube Extrusions
The choice of aluminum alloy for extruded round tubes depends on the specific application and performance requirements. Below are some of the most commonly used aluminum alloys:
1. 6061 Aluminum Alloy
- Features: High strength, excellent corrosion resistance, and easy to machine and weld.
- Applications: Aerospace, automotive industry, and machinery production.
2. 6063 Aluminum Alloy
- Features: Medium strength, high surface finish quality, excellent corrosion resistance, and ideal for anodizing.
- Applications: Architectural curtain walls, decorative materials, and furniture tubing.
3. 7075 Aluminum Alloy
- Features: The highest strength available and ideal for applications requiring superior mechanical properties; however, corrosion resistance is moderate.
- Applications: Aerospace components and high-end manufacturing.
4. 5052 Aluminum Alloy
- Features: Exceptional corrosion resistance with good medium strength and excellent weldability.
- Applications: Marine industry, chemical equipment, and pressure pipelines.
5. 1100 Pure Aluminum
- Features: High aluminum content (99%) with excellent ductility and corrosion resistance, though mechanical strength is relatively low.
- Applications: Food processing, chemical tubing, and decorative applications.
Heat Treatment for Extruded Round Tubes
Heat treatment is a vital process to enhance the mechanical properties, durability, and overall performance of extruded round aluminum tubes. Different aluminum alloys require specific heat treatment procedures based on their composition and application. The primary heat treatment processes include:
Solution Heat Treatment (T4/T451)
- Purpose: Dissolves alloying elements into a solid solution.
- Process: The aluminum tube is heated to a specific high temperature and held for a set duration before being rapidly quenched (usually with water).
- Applications: Provides a good balance of flexibility and moderate strength, commonly used in aerospace and automotive industries.
Artificial Aging (T5/T6/T651)
- Purpose: Strengthens the aluminum alloy by creating precipitations from the elements dissolved during the solution treatment.
- Process: Tubes are slowly reheated to a lower temperature for a controlled time period to achieve the desired hardness and strength.
- Applications: Ideal for applications requiring high strength, such as structural components or heavy-duty machinery.
Annealing (O Temper)
- Purpose: Softens the aluminum tube for improved ductility and easier forming or machining.
- Process: The tube is heated at a low temperature and cooled slowly to relieve internal stresses.
- Applications: Used in situations where forming, bending, or other secondary operations are needed.
RFQ of Extruded Aluminum Pipe
. Anodizing (Oxidation)
- Common Colors:
Natural silver
Black
Champagne
Light bronze
Dark bronze
Gold
2. Electrophoresis Coating (E-Coating)
- Common Colors:
Black
Champagne
Light bronze
Dark bronze
Custom metallic colors
3. Powder Coating
- Colors:
Can match any color based on the RAL color chart.
Offers textures like matte, gloss, satin, and custom finishes.
4. PVDF Coating (Polyvinylidene Fluoride)
- Colors:
Also customizable using the RAL color chart.
High-end finishes with matte or glossy effects.
5. Wood Grain Transfer Printing
- Colors and Patterns:
Mimics various wood types (e.g., oak, walnut, teak, mahogany).
Custom patterns available based on provided samples.
6. Film Lamination
- Colors and Patterns:
Includes textures like marble, leather, and solid colors.
Custom finishes and patterns based on provided samples.
Pre-Treatment Options (Impact on Final Color)
- Brushing/Polishing: Produces smooth or reflective metallic surfaces.
- Sandblasting: Adds a rough, matte texture before the final surface treatment.
We provide a wide range of machining services for aluminum extrusions to meet specific requirements. These include cutting off/section removal, slotting, drilling holes, tapping threads, bending, and localized stamping to create deformations. For example, we can trim extruded profiles to custom lengths, mill precise grooves, create threaded holes for fasteners, bend profiles into specific shapes, or apply localized stamping to achieve custom forms or deformation.
In addition to these processes, we also offer TIG/MIG welding to join aluminum components for a solid structure. Furthermore, our services include assembly of common accessories, such as brackets, corner connectors, screws, hinges, end caps, and rubber seals, providing complete and ready-to-install profile solutions tailored to your project needs. This ensures that we can handle everything from simple cuts to highly customized fabrication and assembly, all with precision and efficiency.
For custom aluminum extrusion projects, we accept a variety of drawing formats, including CAD files, STEP files, and PDF files. However, for extrusions that require additional machining processes, it’s recommended to provide STEP files, as they ensure precise 3D modeling for machining accuracy.
While PDF files are acceptable, converting them into CAD drawings may result in the loss of certain details, requiring us to manually redraw the design, which could increase lead time. For the fastest and most accurate quotation, we recommend providing CAD files (e.g., DWG/DXF) and STEP files to ensure efficient design evaluation and pricing.
Mold fees are an essential part of the custom aluminum extrusion process. Since every order requires a uniquely designed mold tailored to specific requirements, these molds cannot be used for other products. Therefore, the mold fee is necessary and non-negotiable.
We require 100% upfront payment of the mold fee before mold development begins to ensure timely production. However, as a token of appreciation for your support, we offer a refund of the mold fee or equivalent discounts once the order reaches a certain production volume. Specific policies can be discussed based on your order volume and collaboration details.
Our minimum order quantity (MOQ) varies depending on the size of the product. For smaller-sized products, the MOQ is typically 500kg, while for larger-sized products, it is 2 tons.
We will specify the exact MOQ requirements during the quotation process. If your order quantity does not meet the MOQ, we can still arrange production, but an additional fee will be applied to cover mold preheating and production setup time. Rest assured, this extra fee will be reasonable, and we aim to keep it as minimal as possible to ensure smooth cooperation.
Packaging can be customized according to your needs. Options include using protective film or paper to separate and protect the surface, or foam film for additional surface protection. Products can be palletized or packed into cartons, and the quantity per pallet or carton can be specified by the customer.
The standard packaging involves bundling several pieces together with plastic wrap and then securing them onto pallets. Any packaging requirements beyond the standard will be accommodated, and the associated costs will be clearly provided to the customer.
Mold production typically takes 7 days. After the sample is confirmed, producing a full container load of 26 tons generally requires 14 days for extrusion alone. If surface treatment is required, an additional 3 days will be needed. For machining, extra time will be required depending on the complexity and volume of the machining work. The exact additional time for machining will be determined based on the specific processing requirements.
Aluminum profiles are naturally corrosion-resistant due to the formation of a thin, protective oxide layer when exposed to air or water. This oxide layer is stable and self-repairing, meaning that even if the surface is scratched or cut (such as at exposed ends or during processing), the aluminum will not rust or corrode like iron or steel. Instead, the exposed areas will quickly form a new oxide layer, providing continuous protection against further oxidation.
With proper design, installation, and maintenance, aluminum profiles can last for decades, even in challenging environments. For example, untreated aluminum can easily withstand 20-30 years in outdoor applications, while profiles with surface treatments like anodizing or powder coating can last even longer, often exceeding 50 years. This makes aluminum an excellent choice for applications where durability and long-term performance are essential.
The price of aluminum profiles consists of several components: raw material costs, extrusion processing fees, surface treatment fees, machining costs, and additional packaging fees. Among these, the cost of aluminum as a raw material tends to fluctuate frequently, while other fees remain relatively stable. Due to these fluctuations, our quotations are typically valid for 7 days.
Pricing can be structured in different ways depending on the product and requirements. It can be calculated by weight (e.g., cost per ton), by length (e.g., cost per meter), or by piece (e.g., cost per unit). For products involving extensive machining, such as heat sinks, pricing is generally calculated on a per-piece basis to accurately reflect the additional processing costs. This flexible pricing approach ensures the quote is tailored to the specific needs of the customer.
We can manufacture aluminum profiles in compliance with technical requirements that meet European standards (EN), American standards (ASTM/AA), or other standards as specified by the customer. Custom production is tailored to ensure that the profiles meet the specific standard requirements requested.
Our production equipment is designed for the metric system. If the drawings provided are in the imperial system, we will convert them into metric units for production to ensure accuracy.
It is important to note that while we can machine imperial-threaded holes for fasteners, if you require us to supply matching imperial fasteners, they may not always be available in stock. Custom orders for imperial fasteners typically require a large volume for production. Please consider this when planning your project.