carbon steel square pipe
Gnee factory supplies high-quality carbon steel square pipe in different OD and thickness. Our square tube features high strength, stable structure, easy to process and connect. We offer customization services and surface treatments, including special wall thicknesses, and cut-to-length customization options. Gnee support flexible minimum order quantities, factory prices, and global logistics. Get our pricing information now!
General Parameters Of Carbon Steel Square Pipe
| Product | Carbon Steel Square Pipe |
| Wall Thickness | 1.0mm-25mm or as customer requirement |
| OD | 15mm*15mm-800mm*800mm,25mm*25mm-600mm*600mm, |
| Length | 1m-16m or as customer requirement |
| Ends | Plain end/Beveled,protected by plastic caps on both ends, grooved, threaded and coupling, etc. |
| Surface Protection | Bare,Painting black,varnished,galvanized,anti-corrosion 3PE PP/EP/FBE coating |
| Testing Methods | Pressure test,Flaw detection,Eddy current testing, Hydrostatic testing or Ultrasonicexamination and also with chemical and physical property inspection |
| Origin | China |
| Grade | Q235, Q345, Q195, Q215, ST52, ST42, ST35, Q195-Q345, ST35-ST52Q235, Q235B, S275, S275jr, A53, st37, st52Q195 → Grade B, SS330,SPHC, S185Q215 → Grade C,CS Type B,SS330, SPHCQ235 → Grade D,SS400,S235JR,S235JO,S235J2Q345 → SS500,ST52 |
| Applications | Mechanical manufacture, construction field, metallurgy industry, farm vehicles, agriculture greenhouse, automotive industry, railway, highway guardrail, etc. |
Various Types Of Carbon Steel Square Pipe
We offer a variety of carbon steel square tubes at competitive prices and can ship quickly. Our products are exported to the Middle East, Southeast Asia, Latin America, Europe and other regions, supporting more than 1,200 projects worldwide. Gnee have focused on the production and export of square tubing for 18+ years. Our factory is certified, and our product quality meets standards.
Cold Rolled Carbon Steel Square Tube Hot Rolled Carbon Steel Square Tube High Carbon Steel Square Tube Medium Carbon Steel Square Tube Seamless Carbon Steel Square Tube Welded Carbon Steel Square Tube Thin-walled Carbon Steel Square Tube Thick-walled Carbon Steel Square Tube
Hot Sale Carbon Steel Square Pipes Grades In Stock
Gnee supplies ASTM, EN, JIS, and GB standards pipe worldwide. We also offer various sizes and custom processing like cutting and drilling. Factory prices available—contact us today!
- ASTM A36
- ASTM A500 Grade D
- S355JR
- ASTM A500 Grade A
- ASTM A513
- S275J2
- ASTM A500 Grade B
- S235JR
- JIS SS330
- ASTM A500 Grade C
- S275JR
- JIS SS400
carbon steel square pipe For Sale
Global Direct Sales. High-Quality Carbon Steel Square Pipe In Stock. Competitively Priced. Get Quote.
Carbon steel square pipe manufactured by Gnee has the following advantages:
- Easy processing
- Good Corrosion Resistance
- High Strength
- Good Plasticity
Gnee provides customized services. The size can be customized for you. Gnee is committed to creating suitable and perfect pipe products for global customers.
With excellent properties, carbon steel square tube is widely used in the following industries:
- Furniture Manufacturing
- Machining Equipment
- Agricultural Equipment
- Building Structure
- Industrial Equipment
Other Square Tube You May Be Interested In
We also provide square tube in stainless steel, galvanized steel, mild steel, alloy steel, etc. All are made from premium steel material. Our products involve advanced processes including automated welding, precision straightening, NDT, sandblasting, and surface oxidation control. This ensures accurate dimensions, smooth surfaces. Send your inquiry now.
Favorable Steel Pipe Prices
We can provide competitive factory prices to global customers.
Volume Discount
We provide gradually decreasing unit prices based on the quantity of steel pipes. For example, when the purchase volume reaches 100 tons, 200 tons, and 500 tons, Gnee Steel Pipe will give different discounts.
Custom Pricing
According to the specific needs (such as steel pipe material, specifications, quantity, delivery time, etc.), we can provide flexible customized quotations to meet the budgets and requirements of different customers.
Project-Based Pricing
Gnee can provide special preferential contract prices for large projects. In the process, we can also formulate flexible price plans based on the payment schedule or delivery time of the project.
What Can Gnee Guarantee For Our Customers?
Quality Assurance
As a supplier with 18+ years of experience, we promise to provide high quality steel pipes, which comply with international standards and industry specifications, such as ISO, ASTM, EN, or JIS, etc. Gnee can provide relevant quality certifications, test reports & material certifications.
Faster Delivery Time
Gnee has a large inventory of steel pipes and multiple production lines. We respond to customers’ orders on time and provide customers with reasonable transportation and delivery solutions. We promise to deliver steel pipes according to the time specified in the contract.
Comprehensive Services
Gnee provides comprehensive services for customers. Services include steel pipe customization, technical support & consultation, sample provision, etc. Through the guidance of a professional team, customers can ultimately purchase steel pipe specifications, sizes, and materials that meet project requirements.
Competitive Price
As a supplier, Gnee can promise to provide competitive prices and conduct reasonable negotiations with customers. Gnee has its own factory and production lines. Also, we have established stable cooperative relationships with many reliable raw material suppliers and can provide high-quality steel pipes to the world at factory prices.
Our Certificate
We comply with various steel product certification requirements such as ISO 9001 quality certification, European market CE certification, ASTM, EN, API certification, etc. to ensure compliance with the quality standards and compliance of the steel industry.
Gnee Steel Pipe Factory Display
Why Choose Gnee Carbon Steel Square Pipe?
In addition, our carbon steel square 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.
What Services Does Gnee Provide?
Gnee can provide the following measurement services for carbon steel square 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 the carbon steel square 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 carbon steel square 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.
Gnee can customize the size and shape of steel pipes for your project according to specific project needs. The custom design of the carbon steel square 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 carbon steel square 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 passages for easy operation in the design for areas that require frequent maintenance.
Purchasing Gnee carbon steel square pipe can provide the following deep processing services. We can customize according to the specific needs of customers to meet the requirements.
Cutting service: Carbon steel square 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: Square carbon steel pipes are bent and formed by stress application and appropriate processes to obtain the desired shape.
Welding service: Square carbon steel 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 square carbon steel pipe 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.
Gnee square carbon steel tube can provide the following testing services through third-party testing agencies. These third-party testing services can provide independent, objective verification that square carbon steel tube 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 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 square carbon steel tubes to evaluate their quality and performance.
Corrosion performance test: Through the corrosion performance test, evaluate the corrosion resistance of square carbon steel pipes, including salt spray corrosion resistance, chemical corrosion resistance, etc.
Hardness test: Hardness test is used to measure the hardness of square carbon steel 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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