Black Steel Pipe
Black steel pipe is primarily made of carbon steel. The black appearance comes from iron oxide that forms on the surface during the manufacturing process. Unlike galvanized steel, which is coated with zinc to prevent corrosion. Black steel pipe has no coating, making it suitable for applications that do not require additional corrosion resistance. This feature, coupled with its sturdiness, makes black steel pipe a top choice for industries such as construction, gas distribution, and fire protection systems.
Black steel pipe is made of carbon steel. Carbon steel is a material that is primarily composed of iron and carbon. The carbon content in the steel provides the pipe with high strength and durability. Other alloying elements such as manganese, silicon, and copper are added to enhance specific properties such as toughness and weldability. The manufacturing process of black steel pipe generally includes the following steps: forming (welded pipe or seamless pipe), heating and cooling, shaping, and cutting.
Gnee Steel Pipe supplies black steel pipes in various sizes. Our high-quality steel pipes have been successfully exported to more than 700 companies in more than 60 countries. Contact us for steel pipe prices and stock.
General Parameters Of Black Steel Tubing
| Product | Black Steel Pipe/ Black Steel Tube |
| OD | 8.7mm-720mm |
| WT | 0.75mm-120mm |
| Length | 4-12m |
| Standard & Grade | Gr. B/Gr.A/A179/A192/A-1/T11/T12/T22/P1/FP1/T5/4140/4130 |
| Ends | Square Cut, Plain End, Burr Removed |
| Origin | China |
| Monthly Output | 20 million-30 million pieces per month |
| Applications | Gas Distribution Systems/ Fire Sprinkler Systems/ Water Transportation/ Oil and Petroleum Pipelines/ HVAC Systems |
| Supplementary Technology | dimensional checks, non-destructive testing (NDT), pressure testing, and material composition analysis, etc |
more Information About Black Hollow Section Pipe
| Element | Percentage |
| C | 0.3 max |
| Mn | 1.20 max |
| P | 0.50 max |
| S | 0.045 max |
| Product | Tensile Strength | Yield Strength |
| Black Steel Pipe | 60,000psi | 35,000psi |
Provide Wide Sizes
We Gnee have 1 inch pipe/2 inch pipe/4 inch pipe/5 inch pipe/14 inch pipe and more for you to choose.
Provide Various Black Steel Hollow Section Pipe Shapes
Rectangular Shape- Round Shape
- Oval Shape
- Square Shape
Excellent Features Of Black Steel Tubes
Gnee has been providing high-quality scaffolding steel pipes with a variety of excellent properties to customers around the world for 15 years. Black steel pipes are a versatile and cost-effective solution. Their strength, heat resistance, and ease of installation make them a preferred choice in both residential and industrial settings. Here are the key features of black steel pipe in detail.
Black steel pipe does not undergo galvanization (the process of coating steel with zinc to prevent corrosion), meaning it lacks the added corrosion resistance found in galvanized steel pipes. However, the natural oxidation layer formed during the manufacturing process provides a basic level of rust protection. While it may not be as resistant to rust as galvanized or stainless steel, black steel pipe can still be used in low-moisture environments without significant concerns.
One of the key advantages of black steel pipe is its ability to withstand high temperatures without losing structural integrity. This makes it ideal for applications where pipes are exposed to extreme heat, such as in the transportation of steam, hot water, or gas. Unlike plastic or galvanized pipes, black steel pipes retain their strength and form even in high-temperature environments.
Black steel pipes are highly versatile when it comes to fabrication and installation. They can be easily cut, threaded, and welded to meet the specific requirements of various applications. This ease of customization makes them a popular choice for contractors and engineers working on projects that require custom pipe configurations.
- Threaded Connections: Many black steel pipes come with threaded ends, allowing them to be quickly and securely connected using pipe fittings. This is particularly useful in plumbing and gas systems, where a secure, leak-proof connection is necessary.
- Weldability: Black steel pipes can also be welded, making them ideal for applications that require more permanent and sturdy connections. The material’s excellent weldability ensures that joints are strong and reliable, especially in high-pressure environments.
While black steel pipes may not offer the same corrosion resistance as galvanized or stainless steel, they are still highly durable and long-lasting when used in appropriate environments. Regular maintenance, such as painting or coating with protective oils, can further extend the life of black steel pipes, ensuring they remain in good condition over time.
In low-moisture or indoor environments, black steel pipes can last for decades with minimal maintenance, making them a practical and reliable choice for both short-term and long-term applications.
One of the most attractive features of black steel pipes is their cost-effectiveness. Since they do not require galvanization or other complex surface treatments, black steel pipes are generally less expensive than galvanized or stainless steel pipes. Their affordability, combined with their strength and versatility, makes them a popular choice for large-scale projects where cost management is critical.
What are The Applications Of Black Steel Tubing?
FAQ
The key difference between black steel and galvanized steel pipes is the coating. Black steel pipes are uncoated and are more suitable for carrying gas or non-potable water, while galvanized pipes are coated with zinc to prevent corrosion and are commonly used for potable water lines.
Black steel pipes can be connected through a variety of methods, including threading, welding, or using fittings like couplers and flanges. Threaded connections are commonly used for plumbing and gas lines, while welding is more typical for industrial applications.
Yes, black steel pipes can be welded, and they are frequently welded for use in industrial applications. However, proper welding techniques must be used to ensure a strong and safe connection, especially when handling pressurized gases or fluids.
While black steel pipes can be used outdoors, they need to be coated with a protective layer, such as paint or a sealant, to prevent rust and corrosion caused by exposure to moisture and the elements.
Black steel pipe is a type of carbon steel pipe, with the primary difference being the surface finish. Black steel pipe has an oxide scale finish, while other carbon steel pipes may have different surface treatments, such as galvanizing or powder coating.
To extend the lifespan of black steel pipes, regular inspections are required to check for signs of rust or corrosion. If rust is detected, the affected area should be cleaned and coated with protective paint or sealant. In environments where moisture is a concern, it’s essential to keep the pipes dry and protected from the elements.
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 A Steel Pipe Distributor?
In addition, our tubes have 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 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.
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.
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.
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.
