• Hollow Section with Different Specifications from CNBM System 1
  • Hollow Section with Different Specifications from CNBM System 2
  • Hollow Section with Different Specifications from CNBM System 3
Hollow Section with Different Specifications from CNBM

Hollow Section with Different Specifications from CNBM

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100 m.t.
Supply Capability:
3000 m.t./month

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1、Structure of Hollow Section Description: 

Hollow section is a type of metal profile with a hollow tubular cross section. Hollow section, especially rectangular sections, are commonly used in welded steel frames where members experience loading in multiple directions. Square and circular hollow section have very efficient shapes for this multiple-axis loading as they have uniform geometry along two or more cross-sectional axes, and thus uniform strength characteristics. This makes them good choices for columns. They also have excellent resistance to torsion. Hollow section can also be used as beams, although wide flange or I-beam shapes are in many cases a more efficient structural shape for this application. However, the hollow section has superior resistance to lateral torsional buckling.

2、Main Features of the Hollow Section: 

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

•Reasonable price 

3、Hollow Section with Different Specifications Images:

  • Hollow Section with Different Specifications

Hollow Section with Different Specifications


Hollow Section with Different Specifications

4、Hollow Section Specifications:



JIS G3445-2006, JIS G3444-2006, JIS G3446-2004, JIS G3441, GB/T 8163-1999, GB/T 8162-1999, DIN EN 10216-1-2004, DIN EN 10217-1-2005, DIN EN 10305, ASTM A106-2006, ASTM A53-2007, ASTM A789-2001, ANSI A213-2001, ASTM A179-1990


10#-45#, Cr-Mo alloy, Mo

10#, 20#, 45#, 15CrMo, 12CrMo, 13CrMo44, 12CrMo195, 16Mo, 16mo3


1 - 50 mm

Section Shape:


Outer Diameter:


Place of Origin:

Shandong, China (Mainland)

Secondary Or Not:



Structure Pipe


Hot Rolled

Surface Treatment:

Copper Coated



Special Pipe: 

Thick Wall Pipe

Alloy Or Not: 


authentication:CANS CNAB IAF PAC CEC 


5、FAQ of Hollow Sections with Different Specifications: 

①How to guarantee the quality of the products?

We have established the international advanced quality management system,every link from raw material to final product we have strict quality test;We resolutely put an end to unqualified products flowing into the market. At the same time, we will provide necessary follow-up service assurance.

②How long can we receive the product after purchase?

In the purchase of product within three working days, We will arrange the factory delivery as soon as possible. The pecific time of receiving is related to the state and position of customers.

③ How can we get more information?

You can contact us by Email or call us directly and we will do our best to give you valuable information as much as possible but this service is not available on weekends.

Q:How do you prevent freezing in steel pipes during cold weather?
To prevent freezing in steel pipes during cold weather, there are several measures that can be taken: 1. Insulate the pipes: Insulation is an effective way to protect steel pipes from freezing. Use insulation sleeves or wraps to cover the pipes, especially in areas where they are exposed to cold temperatures. Insulation helps retain heat and prevents the pipes from reaching freezing temperatures. 2. Seal any air leaks: Check for any gaps or openings around the pipes where cold air can enter. Use caulking or weatherstripping to seal these gaps and prevent cold air from reaching the pipes. 3. Maintain a consistent temperature: Ensure that the area where the pipes are located is adequately heated and insulated. Keeping the temperature above freezing will help prevent the pipes from freezing. If the pipes are exposed to extremely low temperatures, consider using heat tape or pipe heating cables to provide additional warmth. 4. Allow water to flow: Running a small, continuous trickle of water through the pipes can help prevent freezing. The flowing water generates heat and inhibits the formation of ice within the pipes. However, this method should only be used as a last resort, as it can waste water. 5. Drain the pipes: If the steel pipes are in an area that is not regularly used or if freezing weather is expected, it may be advisable to drain the pipes completely. Turn off the water supply and open all faucets to allow the water to drain out. This eliminates any standing water that could freeze and cause the pipes to burst. It is important to note that prevention is key, as frozen steel pipes can lead to costly damages and water leaks. By implementing these measures, you can protect your steel pipes and ensure they remain functional during cold weather.
Q:How do steel pipes handle water hammer?
Steel pipes handle water hammer by absorbing the sudden pressure surges caused by rapid changes in water flow. The inherent strength and rigidity of steel pipes allow them to withstand the impact of water hammer without experiencing significant damage or failure.
Q:How are steel pipes used in the shipbuilding industry?
Steel pipes are used in the shipbuilding industry for various purposes including the construction of the ship's hull, piping systems, and structural components. They are utilized for their strength, durability, and corrosion resistance, playing a crucial role in ensuring the structural integrity, fluid transportation, and overall safety of the ships.
Q:How do you prevent corrosion in steel pipes?
One effective way to prevent corrosion in steel pipes is by applying a protective coating, such as paint or epoxy, to the surface of the pipes. This barrier creates a physical barrier between the pipe and the surrounding environment, preventing moisture and corrosive agents from coming into direct contact with the steel. Additionally, regular inspection and maintenance of the pipes, including cleaning and repairing any damaged coating, can help identify and address potential issues before they lead to corrosion.
Q:What are the main components of a steel pipe?
The main components of a steel pipe include the steel material itself, which is typically made from carbon and alloy steel, as well as various coatings or linings that can be applied to enhance its durability and resistance to corrosion. Additionally, a steel pipe may also have fittings such as flanges or couplings, and may be further reinforced with supports or braces depending on its intended use.
Q:Can steel pipes be used for offshore applications?
Yes, steel pipes can be used for offshore applications. Steel pipes are commonly used in offshore oil and gas drilling operations, as they have high strength, durability, and resistance to corrosion, which are essential qualities for withstanding harsh marine environments. Additionally, steel pipes can be easily welded and fabricated to meet specific offshore project requirements.
Q:What are the future trends in steel pipe manufacturing?
Some future trends in steel pipe manufacturing include the use of advanced technologies such as robotic automation and artificial intelligence for increased efficiency and precision. There is also a growing focus on sustainability, with the development of eco-friendly manufacturing processes and the use of recycled materials. Additionally, there is a shift towards producing pipes with higher strength and lighter weight, as well as an increasing demand for customized products to meet specific industry requirements.
Q:Can steel pipes be used for underground applications?
Yes, steel pipes can be used for underground applications. Steel pipes are highly durable and can withstand the pressure and corrosion that may be encountered in underground environments. They are commonly used for various underground applications such as water supply, sewage systems, and underground utility lines.
Q:How are steel pipes used in the manufacturing of renewable energy systems?
Steel pipes are extensively used in the manufacturing of renewable energy systems for various purposes. They are commonly used as structural components, providing strength and stability to wind turbines, solar panel supports, and hydroelectric power systems. Steel pipes are also utilized for transporting fluids such as water, steam, or gases in energy generation processes. Furthermore, they are essential in the construction of geothermal energy systems, where they are employed to create underground heat exchangers and piping networks. Overall, steel pipes play a crucial role in the efficient and reliable functioning of renewable energy systems.
Q:Are steel pipes suitable for use in food processing industries?
Yes, steel pipes are suitable for use in food processing industries. They are highly durable, corrosion-resistant, and can withstand high temperatures and pressure. Additionally, steel pipes are easy to clean, maintain hygiene standards, and do not contaminate the food being processed.

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