Structural Steel Pipe
Structural steel pipe is specifically manufactured for structural applications. The pipes are manufactured through a seamless or welded process. Structural tubing comes in various shapes, including round structural tubing, structural steel square tube, and rectangular structural steel tubing. The choice of shape depends on the specific application requirements.
Gnee offers structural steel pipe in various sizes, dimensions, and pressure ratings, allowing them to meet different structural application requirements. To ensure product quality, we provide a variety of tests. Contact us now.
General Parameters Of Structural Steel Pipe
| Product | Structural Steel Pipe/ Structural Steel Tube |
| OD | 1/8” ~ 26” (10.3 ~ 660mm) or as Per Clients Need |
| WT | SCH 10 ~ 160, SCH STD, SCH XS, SCH XXS or as Per Clients Need |
| Length | Fixed Length (5.8/6/11.8/12 mtr), SRL, DRL |
| Painting & Coating | Bare, Lightly Oiled, Black/Red/Yellow Painting, Zinc/Anti-corrosive Coating |
| Origin | China |
| Monthly Output | 20 million-30 million pieces per month |
| Applications | Sign Poles, Bollards, Tower Construction, Roadway Billboard Signs, Dredge Pipe, etc. |
| Ends | Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends |
| Pipe Standard | ASTM A53, A252, A500, A501, JIS G3444, EN 10210/10219 |
Hot Sale Steel Tube Grade For Structural Purposes
Hot Sale structural Steel Pipe In different Materials
We offer a wide range of structural pipes in various materials, including carbon steel, stainless steel, alloy steel, and galvanized steel, to meet the diverse needs of our customers across different industries and applications. Whether your project requires exceptional strength, corrosion resistance, durability, or long-term structural performance, we have the right solution for you.
Galvanized Structural Pipe Carbon Steel Structural Pipe Mild Steel Structural Pipe Stainless Structural Pipe Alloy Steel Structural Pipe
Hot Sale structural Steel Design Shapes
Gnee provides structural steel pipes in round, square, rectangular, and custom shapes to meet the diverse needs of your projects. Whether you require standard dimensions or tailor-made sizes according to your drawings, our advanced production lines and strict quality control ensure precision, durability, and competitive pricing.
Round Hollow Section Oval Hollow Section Structural Channel Steel
Other related structural steel products in Stock
In addition to structural steel pipes, we also supply a comprehensive range of steel profiles, including angle steel, L-shaped steel, square steel, flat steel, and more. Our product range covers multiple international standards such as EN, ASTM, JIS, and GB, ensuring full compatibility with projects in different regions. We provide a wide selection of dimensions and grades, from commonly used stock sizes to fully customized specifications.
Angle Steel Material L Shaped Angle Iron Steel Square Bar Flat Bar Structural I Section Steel
ASTM/EN/JIS standard Pipe For Structural Purpose
Gnee Has A Wide Range Of Structural Steel Pipe Standards And Specifications. We Supply Them At Factory Prices And Provide A Variety Of Quality Inspections.
| JISG3441 | for Alloy steel tubes for machine purpose |
| EN10210 | for hot finished structural hollow sections of non-alloy and fine grain structural steels |
| EN 10297-1 | for steel tubes for general mechanical applications |
| DIN1629 | for Seamless Steel pipe Of Non-Alloys Steels are made of unalloyed steel |
| Abbr. | Corresponding | Application |
| A500 | ASTM A500 / A500M | Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes |
| A501 | ASTM A501 / A501M | Specification for Hot-Formed Welded and Seamless Carbon Steel Structural Tubing |
| A847 | ASTM A847 / A847M | Specification for Cold-Formed Welded and Seamless High Strength, Low Alloy Structural Tubing with Improved Atmospheric Corrosion Resistance |
| A618 | ASTM A618 / A618M | Specification for Hot-Formed Welded and Seamless High-Strength Low-Alloy Structural Tubing |
Alloy Steel Pipe for Machine Structures
We manufacture these alloy steel pipe products using materials that comply with JIS G 3441 Alloy Steel Pipe for Mechanical Structures, JIS G 4053 Low Alloy Steel for Mechanical Structures, and other standards and specifications.
Production Process of Alloy Steel Pipe for Machine Structures:
- Raw Material Selection
- Heating
- Piercing (for seamless pipes)
4. Elongation and Rolling
5. Sizing and Straightening
6. Heat Treatment
7. Machining (if required)
8. Surface Treatment
9. Inspection and Testing
The manufacturing process depends on whether the product is seamless or welded, but for mechanical structural applications, seamless alloy steel pipe is more common due to its greater strength and uniformity.
Characteristics of Alloy Steel Pipe for Machine Structures:
- Enhanced Strength and Toughness
- Excellent Wear Resistance
- Good Heat Resistance
- Improved Corrosion Resistance
- High Machinability and Weldability
- Dimensional Accuracy and Straightness
Applications of Alloy Steel Pipe for Machine Structures:
- drive shafts
- steering components
- conveyor systems
- plow frames
- generator components
- automobiles
These products are typically manufactured in accordance with JIS G 3441 standards for alloy steel tubes used in machine structural applications.
Various steel grades as follows:
- SCr 420 TK
- SCM 415 TK
- SCM 420 TK
- SCM 418 TK
- SCM 435 TK
- SCM 440 TK
- SCM 430 TK
Carbon Steel Pipe for Machine Structures
We produce these products using materials that comply with JIS G 3445 “Carbon Steel Pipe for Machine Structures,” JIS G 4051 “Steel for Machine Structures,” and other standards and specifications.
Production Process of Carbon Steel Pipe for Machine Structures:
- Raw Material Selection
- Heating
- Piercing / Hollow Formation (for seamless pipes)
4. Rolling / Forming
5. Welding (only for welded pipes)
6. Sizing and Straightening
7. Heat Treatment (if required)
8. Surface Treatment
9. Inspection and Testing
10. Cutting & Custom Processing
The manufacturing process depends on whether the product is seamless or welded, but for mechanical structural applications, seamless alloy steel pipe is more common due to its greater strength and uniformity.
Characteristics of Carbon Steel Pipe for Machine Structures:
- Withstand heavy loads
- Easy to cut, weld, drill, and form
- High dimensional accuracy
- Ensuring long service life
- Variety of grades & sizes
- Good compatibility with the system
Applications of Carbon Steel Pipe for Machine Structures:
- machines
- automobiles
- bicycles, furniture, tools
- cylinders
- heavy-duty equipment
- heavy-duty shelving
These products are typically manufactured in accordance with JIS G 3445 standards for carbon steel tubes used in machine structural applications.
Various steel grades as follows:
- STKM 11A
- STKM 12A
- STKM 12B
- STKM 12C
- STKM 13A
- STKM 13B
- STKM 13C
- STKM 14A
- STKM 14B
- STKM 14C
- STKM 15A
- STKM 15C
- STKM 16A
- STKM 16C
- STKM 17A
- STKM 17C
- STKM 18A
- STKM 18B
- STKM 18C
- STKM 19A
- STKM 19C
- STKM 20A
More information About Structural Steel Pipe
Gnee factory have the largest inventory of structural steel pipes at its warehouse in Tianjin, China headquarters.
- UT (Ultrasonic examination)
- AR(As Hot Rolled only)
- TMCP(Thermal Mechanical Control Processing)
- N(Normalized)
- Q+T(Quenched and Tempered)
- Z Direction Test(Z15,Z25,Z35)
- Charpy V-Notch Impact Test
- The Third Party Test (such as SGS Test)
- Coated or Shot Blasting and Painting
Gnee Steel can provide the following processing services for alloy steel pipe:
- High-definition Plasma Cutting
- Oxy Profiling
- Flame Cutting
- Punching
- Drilling
- Tapping
- Bevelling
- Counter Sinking
- Counter Boring
The Excellent Features of Structural Steel Pipes
Gnee is an exporter of structural steel pipes with over 15 years of experience. We have our own factory. Client can buy from us at an absolute price advantage. We use high-quality raw materials and product quality is guaranteed. Full range of pipe standards and wide range of sizes here.
Strength and Durability
Structural steel pipes have a high load-bearing capacity, making them suitable for applications that require strong structural support. They can withstand heavy loads, pressure, and external forces without deformation or failure.
Versatility
Structural steel pipes are highly versatile. They come in various sizes, shapes, and grades, allowing for flexibility in design and construction. They can be easily fabricated, cut, welded, and shaped to meet specific project requirements.
Fire Resistance
Structural steel pipes maintain the property of fire-resistant. They do not contribute to the spread or intensification of fires. In the event of a fire or other disaster, steel pipes maintain structural integrity longer.
Corrosion Resistance
Structural steel pipes are often coated with protective layersto enhance their resistance to corrosion. The protective coating helps to prolong the lifespan of the pipes and reduces the need for maintenance.
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 15 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.
Inventory And Delivery Of Steel Pipe
Gnee factory has a large inventory of steel pipes and supports bulk orders. We also offer a variety of logistics solutions. Come and contact us.
Why Choose Gnee as Structural Steel Supplier?
Gnee provides structural steel pipes to multiple industries, including the construction industry, transportation industry, structural systems, etc. We have developed into a trusted global leader in the pipe industry. Gnee offers structural pipes in carbon steel, alloy steel, and stainless steel at a discounted price. In addition, we offer a wide range of pipe standards and sizes to satisfy your project’s needs.
In addition, our high-quality pipes have been successfully exported to more than 60 countries such as the United States, Mexico, Venezuela, Kuwait, Colombia, Turkey, Italy, Brazil, France, Iran, Russia, Vietnam, 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:
1. Dimensional measurement: Measure the dimensional parameters such as length, width, and thickness by measuring instruments to ensure the product is qualified and meets the design requirements.
2. Surface measurement: Measure parameters such as flatness, unevenness, and surface roughness of the product surface to help ensure that the quality and surface state meet the requirements.
3. Thickness measurement: Use a thickness measuring instrument to accurately measure the thickness 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 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 for your project according to specific project needs. The custom design of the product 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.
● The shape 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.
Purchasing Gnee’s steel product can provide the following deep processing services. We can customize according to the specific needs of customers to meet the requirements.
Cutting service: Product 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: Products are bent and formed by stress application and appropriate processes to obtain the desired shape.
Welding service: Product 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 product 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 product, 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 can provide the following testing services through third-party testing agencies. These third-party testing services can provide independent, objective verification that products comply with relevant standards and regulations.
Material chemical composition analysis: Through chemical composition analysis, determine whether the composition 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 products, including salt spray corrosion resistance, chemical corrosion resistance, etc.
Hardness test: Hardness test is used to measure the hardness of the products, 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 products, such as cracks, pores, inclusions, etc.
