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Galvanized Steel Square Pipe

Galvanized steel square pipe is a steel pipe that has been coated with a protective layer of zinc through a process called galvanizing. The pipe is made of high-quality steel and is galvanized to prevent rust and corrosion and ensure reliability. Galvanized steel square tubes are characterized by their square cross-section and dimensional accuracy, making them ideal for a variety of structural and engineering applications. These pipes are widely used in construction projects, fencing, railing systems, agricultural structures, and utilities.

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 galvanized 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 Galvanized Steel Square Pipe

ProductGalvanized 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
Surface ProtectionPre-Galvanized, Hot Dip Galvanized, etc
Monthly Output20 million-30 million pieces per month
ApplicationsMachinery manufacture,Roads and Bridges,Construction,Transportation

What applications can galvanized steel square pipes be used for?

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Greenhouses Structure
Greenhouses Structure
Mechanical Application
Mechanical Application

Excellent Features Of Galvanized 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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Galvanization involves coating the steel with a protective layer of zinc, which creates a barrier against corrosion. This layer shields the underlying steel from rust and extends the lifespan of the pipe, even in harsh environmental conditions.

Galvanized steel square pipes maintain the inherent strength of steel while benefiting from the added protection of the zinc coating. This enables them to support heavy loads and provide structural integrity, making them suitable for various construction and engineering applications.

Despite their superior performance and longevity, galvanized steel square pipes are cost-effective compared to alternative materials. Their extended lifespan and minimal maintenance requirements result in long-term cost savings, making them an economical choice for construction projects.

The clean, silver-gray appearance of galvanized steel square pipes adds aesthetic appeal to various applications, making them suitable for both functional and decorative purposes. Their smooth surface finish provides a polished look that complements a wide range of architectural styles.


The primary difference between galvanized steel square pipe and black steel square pipe is the presence of a zinc coating on the galvanized pipe, which provides corrosion resistance. Black steel pipes do not have this protective coating and are typically used in applications where corrosion resistance is not a primary concern.

Galvanized steel square pipes require minimal maintenance. Regular inspection for signs of damage or corrosion is recommended, and any scratches or exposed areas should be repaired with zinc-rich paint or coatings to maintain the protective layer.

Yes, galvanized steel square pipes can be welded using appropriate welding techniques and equipment. However, it’s important to note that the zinc coating may produce fumes during welding, so adequate ventilation is necessary.

Galvanized steel square pipes are typically made from hot-dip galvanized steel coils or sheets. The steel is cut into square shapes and then formed into pipes. These pipes are then submerged in a molten zinc bath to coat the surface with a layer of zinc.

The lifespan of galvanized steel square pipe depends on factors such as environmental conditions, usage, and maintenance. However, properly galvanized steel square pipes can last for several decades without significant corrosion.

Why Choose Gnee Square Pipe?
Gnee’s galvanized 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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