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Stainless Steel Square Pipe

Stainless steel square tube is a hollow tube with a square cross-section and is made of stainless steel. Stainless steel square tubes are manufactured using various processes such as hot rolling, cold rolling or extrusion according to the required size and specifications.

They are available in a variety of sizes, thicknesses and grades to meet different industry needs. For example, 304, 316, etc. are all commonly used grades of stainless steel. The main material of stainless steel square pipe gives it excellent corrosion resistance. Plus, they are extremely durable and can withstand high pressures, extreme temperatures, without deforming.

Gnee has the widest range of square tubes available in stock. Here are a variety of lengths, widths, and thicknesses to choose from. In addition, we provide test certificates and processing services. We have our own factory and can supply steel pipes in large quantities at factory prices.

Gnee has a large inventory of stainless steel square tubes, which allows to meet customers’ needs and deliver products on time. This avoids delays in project progress due to shortages. Our inventory management system is highly precise, ensuring inventory accuracy and real-time updates. Whether it is mass production or individual customized needs, Gnee can provide quick responses, which brings convenience and confidence to customers.

7 days for stock goods/ within 30-50 days / depending on your order quantity

Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D.

  • Bundles
  • Wooden Boxes
  • Crates
  • Packaging as customer’s requirements

Available, welcome to consult


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General Parameters Of Stainless Steel Square Pipe

ProductStainless Steel Square Pipe
Wall Thickness1.0-12.0mm
Length3-12m,or as per your request
TechniqueHot Rolled, Cold Rolled, ERW, High-frequency welded, Extruded
StandardGB/T3094-2000,GB/T6728-2002,ASTM A500,JIS G3466,DIN EN10210,or others
Monthly Output20 million-30 million pieces per month
ApplicationsMachinery manufacture,Roads and Bridges,Construction,Transportation

What applications can stainless steel square pipes be used for?

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Industrial Equipment
Industrial Equipment
Automotive Components
Automotive Components
Outdoor Structures
Outdoor Structures
Fluid Transport
Fluid Transport

Excellent Features Of Stainless Steel Square Pipe

Gnee has been focusing on providing high-quality square tubes with a variety of excellent properties to customers around the world for 15 years. Come and get a quote now.

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Stainless steel square pipes are highly resistant to corrosion and oxidation. They contain a minimum of 10.5% chromium, which forms a protective passive layer on the surface, preventing rust and corrosion even in harsh environments. This makes them suitable for outdoor and marine applications.

Stainless steel square pipes are known for their exceptional strength and durability. They can withstand high pressure, heavy loads, and extreme temperatures without deformation or structural damage. This makes them suitable for structural applications in construction, architecture, and industrial settings.

Stainless steel square pipes can be easily welded, ensuring strong and secure joints. This enables seamless construction and facilitates the fabrication of complex structures.

Stainless steel retains its strength and integrity even at high temperatures. It exhibits excellent thermal conductivity, making it suitable for applications involving heat transfer or exposure to elevated temperatures.


Stainless steel square pipes are available in various sizes, ranging from small dimensions suitable for decorative purposes to larger sizes used in structural and industrial applications. Common sizes include 1/2 inch, 3/4 inch, 1 inch, and larger, with different wall thicknesses to accommodate specific requirements.

Stainless steel square pipes are typically manufactured using the same processes as round stainless steel pipes, such as seamless or welded methods. The square shape is achieved by shaping the steel into a square cross-section during the manufacturing process.

Similar to round stainless steel pipes, square pipes are available in various grades, including 304, 316, 409, and others. The choice of grade depends on factors such as corrosion resistance, strength, and cost, as well as the specific requirements of the application.

Yes, stainless steel square pipes can be customized to meet specific requirements in terms of size, length, wall thickness, finish, and other parameters. Custom fabrication services are available to tailor square pipes to the needs of individual projects or applications.

Yes, stainless steel square pipes are suitable for outdoor applications due to their excellent corrosion resistance. They are commonly used in outdoor structures, such as railings, fences, and architectural features, where exposure to harsh weather conditions is a concern.

Why Choose Gnee Square Pipe?
Gnee’s stainless steel square pipes are distinguished by superior quality, performance, and compliance with strict industry standards. At Gnee, we prioritize customer satisfaction and strive to meet our customers’ needs and exceed their expectations. Our steel tubes are manufactured using high-quality materials and advanced production techniques. We employ stringent quality control measures to ensure that each pipeline meets the highest industry standards. The result is a durable and reliable product that provides long-lasting performance.

In addition, our pipe has been successfully exported to more than 60 countries such as Vietnam, Malaysia, Indonesia, Pakistan, UAE, and South Korea, etc. Many regular customers visit our company and factory and make multiple orders.

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What Services Does Gnee Provide?

Gnee can provide the following measurement services for pipe:

1. Dimensional measurement: Measure the dimensional parameters such as length, width, and thickness by measuring instruments to ensure the pipe is qualified and meets the design requirements.
2. Surface measurement: Measure parameters such as flatness, unevenness, and surface roughness of pipe surface to help ensure that the quality and surface state of the pipe meet the requirements.
3. Thickness measurement: Use a thickness measuring instrument to accurately measure the thickness of the pipe to ensure that it meets the design requirements.
4. Material measurement: Use material analysis instruments to measure the chemical composition and mechanical properties of the product to ensure that the quality and performance meet the requirements.
5. Bending and Deformation Measurements: The degree of bending and deformation of the steel pipe is measured and monitored by using tools such as bending measuring instruments and displacement sensors to ensure that it is within the allowable range.

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Gnee can customize the size and shape of steel pipes for your project according to specific project needs. The custom design of the pipe is carried out by a professional engineer and design team. Based on the requirements and constraints of the project, they will use calculation and simulation tools, combined with experience and technical knowledge, to optimize the steel pipe design to meet the specific needs of your engineering.

● According to the strength requirements of structural design, adjust the thickness, width, and length of pipes.
● The shape of the steel pipe can be designed according to the characteristics of the project.
● If you consider the convenience of installation and maintenance, we can also add openings and passages for easy access and operation in the design for areas that require frequent maintenance.

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Purchasing Gnee steel pipe can provide the following deep processing services. We can customize according to the specific needs of customers to meet the requirements.

Cutting service: Pipe can be custom cut to obtain the desired shape and size according to the needs of customers. For example, flame cutting, plasma cutting, laser cutting, etc., can cut steel pipes into required blocks, special-shaped parts.
Bending and forming: Pipes are bent and formed by stress application and appropriate processes to obtain the desired shape.
Welding service: Pipe can be subjected to various types of welding services, including manual arc welding, gas-shielded welding, laser welding, etc.
Turning and machining of holes: Turning and machining of holes in pipes by using machining equipment. These processes produce smooth surfaces, precise holes and threads to meet specific assembly requirements.
Surface treatment: In order to improve the corrosion resistance and aesthetics of the steel pipe, surface treatment can be carried out. This includes methods such as spraying, hot-dip galvanizing, electroplating, etc. to add a protective layer and provide corrosion resistance.

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Gnee can provide the following testing services through third-party testing agencies. These third-party testing services can provide independent, objective verification that pipes comply with relevant standards and regulations.

Material chemical composition analysis: Through chemical composition analysis, determine whether the composition of the steel pipe meets the standard requirements.
Mechanical performance test: Mechanical performance test includes tensile test, impact test, bending test, etc., which are used to determine whether the mechanical properties such as strength, toughness and ductility of products meet the specified requirements.
Metallographic testing: Through metallographic testing, check the structure, grain size, non-metallic inclusions, etc. of pipes to evaluate their quality and performance.
Corrosion performance test: Through the corrosion performance test, evaluate the corrosion resistance of pipes, including salt spray corrosion resistance, chemical corrosion resistance, etc.
Hardness test: Hardness test is used to measure the hardness of pipe, and its strength and wear resistance can be evaluated according to the hardness value.
Ultrasonic flaw detection: Ultrasonic flaw detection is used to detect internal defects of pipes, such as cracks, pores, inclusions, etc.

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