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Quality-Assured Carbon Steel Pipe Tube with MILL Finish and Thickness Range 0.5-30MM

Place of Origin China
Brand Name Square tube
Model Number tongmao

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Product Details
Certificate ISO9001 Thickness 0.5-30MM
Tolerance +/-0.1MM OuterDiameter 20*20-400*400
Material Steel Surface Hollow
DeliveryTime 5-10DAYS Treatment HOT AND COLD ROLL
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Product Description

Product Description:

Hollow Square Steel Tube is a kind of welded steel tube which is made of high-quality low-carbon steel. It is widely used in construction, machinery manufacturing, steel structure engineering, shipbuilding, solar bracket, automobile chassis, etc. This product is characterized by its square shape, outer diameter, thickness, and tolerance.

Hollow Square Steel Tube has an outer diameter of 20*20-400*400mm and a thickness of 0.5-30mm. The tolerance is ± 0.1mm. The delivery time is usually 5-10days. It is a flat oval steel tube with smooth edges and has strong corrosion resistance. It is also an ERW steel tube, which is widely used in the production of aluminium square tube.


  • Hollow Structural Steel Square Tube
  • Length: 6-12M
  • Thickness: 0.5-30MM
  • Delivery Time: 5-10 DAYS
  • Tolerance: +/- 0.1MM
  • Material: Aluminium Square Tube & Galvanised Steel Tube

Technical Parameters:

Property Value
Certificate ISO9001
Material Galvanised Steel Tube, Hollow Steel Tube, Carbon Steel Tube
Tolerance +/-0.1MM
Shape Square
Delivery Time 5-10DAYS
Surface Hollow
Finish MILL
Thickness 0.5-30MM
Outer Diameter 20*20-400*400


Square tube is a brand name of aluminium square tubes produced by Tongmao. It is made of steel and hot and cold rolled for better surface treatment. Square tube have a tolerance of +/-0.1mm and a length of 6-12M. The steel tube is hollow, making it ideal for a variety of applications such as structural steel, aluminium square tubes, square steel tubes, rectangular steel tubes, and other decorative applications.

Square tube is ideal for use in construction, engineering and other industrial applications. It has a high strength-to-weight ratio, making it suitable for a variety of applications such as structural supports, braces, frames, and other structures. The hollow design allows for more efficient heat transfer and can help reduce noise levels in industrial settings.

Square tube is corrosion resistant and can be used in a wide range of outdoor and indoor applications. It is easy to maintain and can provide a long-lasting, attractive finish. Square tube can also be used in furniture, railings, and other decorative applications. It is a cost-effective, durable, and versatile material, making it an ideal choice for a variety of projects.


Hollow Square Steel Tube

Brand Name: Square tube

Model Number: tongmao

Place of Origin: China


  • Finish: MILL
  • Length: 6-12M
  • Shape: Square
  • Treatment: HOT AND COLD ROLL
  • Thickness: 0.5-30MM

We offer a wide variety of Hollow Square Steel Tube, including Carbon Steel Rectangular Tube and Double Wall Steel Tube with Mill Finish, Length 6-12M, Square Shape, Hot Rolled and Cold Rolled.

Support and Services:

Hollow Square Steel Tube Technical Support and Services

We offer a range of technical support and services for our Hollow Square Steel Tube products, including:

  • Product recommendations
  • Design, installation and maintenance assistance
  • Technical advice
  • On-site service and support
  • Troubleshooting and problem-solving

Our experienced team of engineers and technicians are dedicated to delivering the highest quality customer service, and are available to answer any questions you may have about our products and services.

Packing and Shipping:

Hollow Square Steel Tube Packaging and Shipping:

The hollow square steel tubes are securely packaged in cardboard boxes and wrapped in bubble wrap for extra protection. The tubes are then shipped in a wooden pallet or a reinforced steel cage for added security.


Q1: What is the Brand Name of the product?
A1: The Brand Name of the product is Square tube.
Q2: What is the Model Number of the product?
A2: The Model Number of the product is tongmao.
Q3: Where is the product produced?
A3: The product is produced in China.
Q4: What kind of product is Hollow Square Steel Tube?
A4: Hollow Square Steel Tube is a kind of steel tube.
Q5: What is the material of Hollow Square Steel Tube?
A5: The material of Hollow Square Steel Tube is usually carbon steel, stainless steel or aluminum alloy.