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Durable Hollow Square Steel Tube outerDiameter 20*20-400*400 tolerance /-0.1MM

Place of Origin China
Brand Name Square tube
Model Number tongmao

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Product Details
Material Steel Certificate ISO9001
OuterDiameter 20*20-400*400 Length 6-12M
DeliveryTime 5-10DAYS Thickness 0.5-30MM
Treatment HOT AND COLD ROLL Shape Square
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Product Description

Product Description:

Hollow Square Steel Tube

Our Hollow Square Steel Tubes are made of high-quality galvanized steel, corrugated metal, carbon steel, and steel hollow sections. The length of these tubes range from 6-12 meters, and the shape is square. They are produced using a combination of hot and cold-rolling techniques with a tolerance of +/- 0.1mm. The surface of the tubes is hollow, making them ideal for a variety of applications.


  • Product Name: Hollow Square Steel Tube
  • Treatment: HOT AND COLD ROLL
  • Material: Steel
  • Length: 6-12M
  • DeliveryTime: 5-10DAYS
  • Shape: Square
  • Features: Flat Oval Steel Tube, Aluminium Square Tube, Hollow Steel Tube

Technical Parameters:

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


Hollow Square Steel Tube:

Square Tube, made by tongmao with 0.5-30MM thickness, is a type of Hollow Steel Tube, also known as Hollow Section Steel Tube, Hollow Structural Steel Tube, Rectangular Steel Tube or Square Steel Tube. It is made of HOT AND COLD ROLL treatment and has a Hollow surface. It is usually delivered in 5-10DAYS and its length ranges from 6-12M.

It is widely used in various industries, such as construction, furniture, engineering, vehicle manufacturing, shipbuilding, bridging structure, etc. It can be used as a load-bearing column, frame structure, truss, etc. It is also a good material for building furniture, decoration materials, etc.

Hollow Square Steel Tube, with its superior strength, is an ideal choice for many applications, such as drilling, punching, cutting, welding, bending, etc.


We provide custom-made service for your Hollow Square Steel Tube needs. Our brand is Square Tube, and our model number is tongmao, and it's made in China. We provide Hollow surface finish with MILL treatment. The shape is Square, and the treatment is HOT AND COLD ROLL. Our outer diameter is from 20*20-400*400. We specialize in Hollow Steel Tube, Carbon Steel Pipe Tube, Carbon Steel Square Tube.

Support and Services:

Hollow Square Steel Tube Technical Support and Service

Our team is dedicated to providing the highest quality technical support and service for Hollow Square Steel Tube products. We have a team of experts that are available to answer any questions you may have about our products and services.

Our technical support staff is available to help you with any installation, troubleshooting, operation, maintenance, product selection, or other questions you may have. We are also available to provide custom engineering and design services.

We offer free lifetime technical support for all of our Hollow Square Steel Tube products. We also offer on-site installation and maintenance services for a fee. Our team is committed to providing the best customer service experience in the industry.

Packing and Shipping:

Packaging and Shipping of Hollow Square Steel Tube

Hollow Square Steel Tube is typically packaged and shipped in standard wooden boxes and/or crates. The tubes are then strapped and secured to prevent damage during transport. The boxes are then stacked and transported to the designated destination.

For international shipments, the Hollow Square Steel Tube is loaded into sea containers. The containers are then sealed and shipped to the destination port. On arrival, the containers are then unloaded and the Hollow Square Steel Tube is delivered to the customer.


Q1: What is Square tube?
A1: Square tube is a type of hollow steel tube with a square cross section. It is made by rolling a steel strip into a tube and then welding the edges together.
Q2: What is the Brand Name of Square tube?
A2: The Brand Name of Square tube is Square tube.
Q3: What is the Model Number of Square tube?
A3: The Model Number of Square tube is tongmao.
Q4: Where is Square tube made?
A4: Square tube is made in China.
Q5: What is the feature of Square tube?
A5: Square tube has good strength and stiffness, and is easily welded and machined.