Hollow Section-Rectangle Tubes（Hot Rolled/Cold Rolled）
- Ref Price:
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- Loading Port:
- China Main Port
- Payment Terms:
- TT or L/C
- Min Order Qty:
- 50MT m.t.
- Supply Capability:
- based on order m.t./month
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Hollow Section-Rectangle Tubes（Hot Rolled/Cold Rolled）
Application of Hollow Section-Rectangle Tubes（Hot Rolled/Cold Rolled)
It is widely used in building, machine, chemical equipment, automobile industrial, container, it is also applied to agriculture and mine machine.
ASTM A500, GB6728
Steel grade of Hollow Section-Rectangle Tubes（Hot Rolled/Cold Rolled)
ASTM A500: A, B, C
GB6728：Q195，Q215，Q235，Q345
Size of Hollow Section-Rectangle Tubes（Hot Rolled/Cold Rolled)
*Remark: Besides below sizes, we also can arrange production based on requirement of customers
Sizee(mm) | Thickness(mm) |
20×10 | 0.6-1.0 |
25×12 | 0.6-1.0 |
38×19 | 0.6-1.5 |
50×25 | 0.6-1.5 |
50×30 | 1.6-3.0 |
60×40 | 1.5-3.5 |
75×50 | 1.5-4.0 |
80×40 | 1.5-4.0 |
100×50 | 2.0-6.0 |
100×60 | 2.0-6.0 |
100×75 | 2.0-6.0 |
120×60 | 3.0-6.0 |
120×80 | 3.0-6.0 |
125×50 | 3.0-6.0 |
125×75 | 3.0-6.0 |
150×50 | 3.0-6.0 |
150×75 | 3.0-6.0 |
150×100 | 4.0-12 |
160×80 | 4.0-6.0 |
175×100 | 4.0-12 |
200×100 | 4.0-12 |
200×150 | 4.0-12 |
250×150 | 5.0-12 |
300×200 | 5.0-12 |
400×200 | 5.0-12 |
Chemical Composition(%)
Chemical Requirement | ||||
| Composition % | |||
Grade A | Grade B | |||
Heat | Product | Heat | Product | |
Element | analysis | analysis | analysis | analysis |
Carbon max | 0.26 | 0.3 | 0.22 | 0.26 |
Manganese max | … | … | 1.4 | 1.45 |
Phosphorus, max | 0.035 | 0.045 | 0.03 | 0.04 |
Sulfur max | 0.035 | 0.045 | 0.02 | 0.03 |
Copper, when copper steel is specified, min | 0.20 | 0.18 | 0.2 | 0.18 |
Where an ellipsis (...)appears in this table, there is no requirement | ||||
For each reduction of 0.01 percentage point below the specified maximum for carton, and increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50% by heat analysis and 1.6% by product analysis | ||||
Mechanical Properties
Tensile Requirement | ||
| Grade A | Grade B |
Tensile strength, min, psi (Mpa) | 48000 (400) | 70000 (483) |
Yield strength, min, psi (Mpa) | 36000 (250) | 50000 (345) |
Elongation in 2 in. (50.8mm), min, % | 23 | 23 |
- Q: Can steel pipes be used for wastewater systems?
- Yes, steel pipes can be used for wastewater systems. Steel pipes have been widely used in wastewater systems due to their durability, strength, and resistance to corrosion. They are capable of withstanding high pressure and can effectively carry and transport wastewater over long distances. Additionally, steel pipes can be easily welded, allowing for the creation of a seamless pipeline system that minimizes the risk of leakage. Moreover, steel pipes are environmentally friendly as they can be recycled, making them a sustainable choice for wastewater systems. However, it is important to consider the specific requirements of the wastewater system and consult with experts to determine the most suitable material for the project.
- Q: How are steel pipes used in the agricultural sector?
- Steel pipes are commonly used in the agricultural sector for various purposes such as irrigation systems, water supply lines, and drainage systems. They are used to transport water, fertilizers, and other liquids efficiently and reliably. Additionally, steel pipes are used for constructing structures like livestock enclosures, greenhouses, and storage facilities due to their durability and strength.
- Q: How do steel pipes compare to other materials in terms of cost?
- Steel pipes are generally more cost-effective than many other materials used for pipes, thanks to their durability, strength, and availability. While initial costs may vary depending on factors like size and grade, steel pipes offer a longer lifespan and require less maintenance compared to other materials, making them a cost-efficient choice in the long run.
- Q: What's the difference between round and round tubes?
- Round steel is solid and round tubes are hollow
- Q: Are steel pipes affected by magnetic fields?
- Indeed, magnetic fields can have an impact on steel pipes. Steel, being a ferromagnetic material, is strongly attracted to magnets and can be magnetized. When exposed to a magnetic field, steel pipes can become magnetized themselves, exhibiting magnetic behavior. This magnetic phenomenon can have several implications. Firstly, when steel pipes are in proximity to robust magnetic fields, like those generated by electrical currents or powerful magnets, they may experience a force that could cause them to move or vibrate. This can pose challenges in certain applications, particularly if the pipes need to remain stable and secure. Secondly, the presence of magnetic fields can induce electrical currents in steel pipes. These currents, known as eddy currents, can result in heat generation and energy losses. In some instances, this can lead to inefficiencies and increased energy consumption in systems involving steel pipes. Lastly, magnetic fields can also influence the accuracy of magnetic measurement devices utilized to identify defects or corrosion in steel pipes. The presence of a magnetic field can interfere with the readings, making it more difficult to precisely assess the condition of the pipes. To mitigate these effects, various measures can be implemented. For example, in applications where stability is of utmost importance, steel pipes can be shielded or isolated from strong magnetic fields using non-magnetic materials. Additionally, the impact of eddy currents can be minimized by employing pipes with proper insulation or by utilizing magnetic shielding techniques. In conclusion, while magnetic fields do affect steel pipes, the extent of the impact depends on factors such as the strength of the magnetic field, the composition of the steel, and the specific application or environment in which the pipes are utilized.
- Q: What connections are there for concrete filled steel tubular column foundations?
- Application of double beam connection node usually uses "I" shape columns and steel bracket which is around the construction technology of a modern steel concrete column girder casting formed in the steel pipe outside through the two structures, the bearing pin four axis and four angles on the common components of stress transfer. The construction technology in the application is usually used at both ends of the stress transfer construction mode, through the four steel bracket to the corresponding shear stress, avoid crack width because the node contact produces clear, delayed cracks, improve anti cracking ability of regional nodes.This node model in the connection when the longitudinal reinforcement without through the tube, without bending the construction can be carried out directly, with easy construction technology, construction control difficulty, the economic benefits of construction at the same time, the advantage of low reinforcement to save. In this joint engineering technology, the key pride is to control the stress transfer of steel bracket.
- Q: What are the standard specifications for steel pipes?
- The standard specifications for steel pipes vary depending on the intended use and industry. However, some common standard specifications for steel pipes include dimensions (such as diameter, wall thickness, and length), material composition (such as chemical and mechanical properties), and specific requirements for different applications (such as pressure ratings or corrosion resistance). These specifications are established by industry organizations like ASTM International, American Society of Mechanical Engineers (ASME), and International Organization for Standardization (ISO) to ensure the quality, safety, and compatibility of steel pipes in various sectors such as construction, oil and gas, plumbing, and manufacturing.
- Q: Are steel pipes magnetic?
- It is true that steel pipes have the ability to become magnetic. Steel, mainly composed of iron, possesses ferromagnetic properties. Consequently, it can be magnetized or drawn towards magnets. Nevertheless, it is important to note that not all steel pipes are magnetic due to the variability in steel's magnetic characteristics, which depend on the specific composition and production methods employed. By incorporating specific alloying elements or subjecting it to particular heat treatments, steel can be rendered non-magnetic in certain instances. Moreover, the strength of the magnetic field exhibited by steel pipes varies based on factors such as pipe thickness and the magnet's intensity.
- Q: What are the safety measures to consider when working with steel pipes?
- When working with steel pipes, there are several safety measures to consider. Firstly, it is essential to wear appropriate personal protective equipment (PPE) such as safety glasses, gloves, and steel-toed boots to protect against potential hazards. Additionally, workers should be cautious of sharp edges and take necessary precautions to avoid cuts or lacerations. Furthermore, it is crucial to implement proper lifting techniques and use appropriate lifting equipment when handling heavy steel pipes to prevent back injuries. Adequate training and supervision should be provided to ensure workers are aware of the correct procedures. Another safety measure is to secure the pipes properly to prevent them from rolling or falling, which can cause injuries or damage. Regular inspections of the pipes and the work area should be conducted to identify and rectify any potential hazards. Lastly, workers should be trained on fire safety measures and have access to fire extinguishers or other firefighting equipment in case of emergencies. Proper ventilation should also be ensured when working with steel pipes to avoid inhalation of hazardous gases or fumes. Overall, adhering to safety protocols, using appropriate equipment, and being aware of potential hazards are crucial safety measures when working with steel pipes.
- Q: What are the different types of steel pipe valves?
- There are several types of steel pipe valves, including gate valves, globe valves, ball valves, check valves, and butterfly valves. Each type of valve serves a specific purpose and has its own unique features and applications in various industries.
We mainly produces Square and Rectangular Tubes which using the cold rolling technology and other types of tube including Round Steel Pipes, Welded Steel Pipes, Seamless Steel Pipes, Long Products, Flat Steel Products and so on. Our productivity achieves 500, 000 tons each year.
Our company is stronger in financial capital and enough power of technical support. The steel tubes made by the company are strictly according to ISO9001:2000 standard quality management system to ensure the high quality of the products.
1. Manufacturer Overview
| Location | Tianjin,China |
| Year Established | 2000 |
| Annual Output Value | Above Thirty Million RMB |
| Main Markets | China; Europe |
| Company Certifications | ISO9001:2000 |
2. Manufacturer Certificates
| a) Certification Name | |
| Range | |
| Reference | |
| Validity Period |
3. Manufacturer Capability
| a) Trade Capacity | |
| Nearest Port | Tianjin；Qingdao |
| Export Percentage | 41% - 50% |
| No.of Employees in Trade Department | |
| Language Spoken: | English；Chinese |
| b) Factory Information | |
| Factory Size: | 53000square meter |
| No. of Production Lines | |
| Contract Manufacturing | OEM Service Offered；Design Service Offered |
| Product Price Range | Low Average |
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Hollow Section-Rectangle Tubes（Hot Rolled/Cold Rolled）
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or L/C
- Min Order Qty:
- 50MT m.t.
- Supply Capability:
- based on order m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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