Seamless steel tube for transmission of fluids
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Standard：
GB／T8163 Chinese national standard
Application：
General seamless steel tubes for conveying fluids
Models of major steel tubes：
10．20，Q345，etc．
Diamensional tolerances:
Types of steel tubes | Outer diameter | Wall thickness | ||
Cold-rolled tubes | Tube sizes(mm) | Tolerances(mm) | Tube sizes (mm) | Tolerances(mm) |
＞30～50 | ±0.3 | ≤30 | ±10％ | |
＞50～219 | ±0.8％ | |||
Hot-rolled tubes | ＞219 | ±1.0％ | ＞20 | ±10％ |
Mechanical properties：
Standard codes | Models of steel tubes | Tensite strength（MPa） | Yield strength（MPa） | Elongation（％） |
GB/T8163 | 10 | 335～475 | ≥205 | ≥24 |
20 | 410～550 | ≥245 | ≥20 | |
Q345 | 490～665 | ≥325 | ≥21 |
Chemical composition:
Standard codes | Models of steel tubes | Chemical compositions（％） | |||||||
C | Si | Mn | P | S | Cr | Ni | Cu | ||
GB/T8163 | 10 | 0.07～0.14 | 0.17～0.37 | 0.35～0.65 | ≤0.035 | ≤0.035 | ≤0.15 | ≤0.25 | ≤0.25 |
20 | 0.17～0.24 | 0.17～0.37 | 0.35～0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 | |
Q345 | 0.12～0.20 | 0.20～0.55 | 1.20～1.60 | ≤0.045 | ≤0.045 | / | / | / | |
- Q:Can steel pipes be used for airport construction?
- Yes, steel pipes can be utilized in the construction of airports. In the construction industry, steel pipes find widespread application, including in airports. They are often employed for underground utilities like water and sewage lines, as well as for structural purposes such as providing support to the airport terminal building. The utilization of steel pipes for airport construction offers several advantages. Firstly, they possess remarkable strength and durability, making them capable of handling heavy loads and enduring unfavorable weather conditions. This attribute is crucial for ensuring the security and stability of airport structures. Secondly, steel pipes are highly versatile and can be easily tailored to meet specific project requirements. They are available in various sizes and thicknesses, providing flexibility in both design and construction. Moreover, steel pipes can be welded or joined together to form longer sections, which simplifies installation and reduces construction time. Furthermore, steel pipes exhibit resistance to corrosion, a vital characteristic in airports where constant exposure to moisture, salt, and other environmental factors is common. This resistance to corrosion guarantees the longevity and dependability of the infrastructure. Lastly, in comparison to materials like concrete or PVC, steel pipes offer a cost-effective solution. They necessitate relatively low maintenance and boast a long lifespan, thereby minimizing the need for frequent repairs or replacements and ultimately saving time and money in the long term. In conclusion, due to their strength, durability, versatility, corrosion resistance, and cost-effectiveness, steel pipes are a suitable choice for airport construction.
- Q:What's the difference between hot dip galvanizing and cold galvanizing? Which kind of galvanizing method is good?
- Cold galvanizing refers to the zinc plating, the coating is thinner, corrosion resistance is slightly worse, variable color. Environmental pollution.Hot dip galvanized by molten zinc ingots, the coating thickness can be adjusted, good corrosion resistance, and subsequent passivation, can be used for outdoor rust, long service life, some up to 20 years.
- Q:How are steel pipes used in mining?
- Steel pipes are widely used in mining operations for various purposes. One of the primary uses of steel pipes in mining is for transporting materials such as water, slurry, and other liquids. These pipes are durable and can withstand the harsh conditions often found in mining environments, making them suitable for the transportation of materials over long distances. Steel pipes are also used for ventilation systems in mines. Proper ventilation is crucial in mining to provide fresh air to workers and remove harmful gases and dust. Steel pipes are used to construct ventilation shafts and ducts that facilitate the flow of air throughout the mine, ensuring a safe working environment for the miners. Additionally, steel pipes are used in the construction of underground tunnels and mine shafts. These pipes provide structural support and reinforcement, helping to prevent collapses and maintain the stability of the mine. Steel pipes are known for their strength and durability, making them an ideal choice for these critical applications in mining. Another application of steel pipes in mining is for the extraction of resources. In some cases, steel pipes are used to create boreholes or wells to access underground deposits of minerals or water. These pipes are inserted into the ground, and various techniques such as drilling or hydraulic fracturing are used to extract the desired resources. Overall, steel pipes play a vital role in the mining industry, serving various purposes such as material transportation, ventilation, structural support, and resource extraction. Their strength, durability, and ability to withstand harsh conditions make them indispensable in mining operations.
- Q:How do you join two steel pipes together without welding?
- One common method to join two steel pipes together without welding is by using mechanical fittings or connectors. These fittings are designed to connect pipes securely without the need for welding. Here are a few options you can consider: 1. Threaded Fittings: Threaded fittings have male and female threads that enable you to screw them together. To join the pipes, you will need to cut the ends of the pipes to create male and female threads. Apply thread sealant to ensure a tight and leak-free connection. 2. Compression Fittings: Compression fittings consist of a nut, a compression ring, and a compression seat. These fittings are designed to create a tight seal by compressing the ring against the seat. Simply slide the compression ring and nut onto the pipe ends, and use a wrench to tighten the nut until it forms a secure connection. 3. Flange Connections: Flange connections involve using flanges, which are flat plates with bolt holes, to join the pipes. The flanges are bolted together using gaskets to create a tight seal. This method is commonly used for larger diameter pipes or in situations where frequent disassembly may be required. 4. Grooved Couplings: Grooved couplings utilize a mechanical coupling housing with two grooved ends that fit over the pipe ends. The coupling is then secured using bolts or screws, which tighten the housing around the pipe ends, creating a secure connection. This method is often used in plumbing and fire protection systems. Before deciding on a method, it is crucial to consider the specific requirements of your application, such as the pipe diameter, pressure, and temperature. Additionally, ensure that the chosen method complies with relevant industry standards and regulations to ensure a safe and reliable connection.
- Q:How are steel pipes specified in engineering drawings?
- Steel pipes are specified in engineering drawings by providing information such as the diameter, length, wall thickness, material grade, and any other relevant specifications or standards that need to be followed.
- Q:What are the different types of steel pipe connections for oil and gas pipelines?
- There are several different types of steel pipe connections used for oil and gas pipelines, including threaded connections, welded connections, flanged connections, and grooved connections. Each type has its own advantages and is selected based on factors such as the size of the pipeline, the pressure and temperature requirements, and the specific application.
- Q:How are steel pipes used in the telecommunications infrastructure industry?
- Steel pipes are commonly used in the telecommunications infrastructure industry for various purposes such as supporting overhead cables, protecting underground cables, and providing structural stability to transmission towers and equipment.
- Q:Are steel pipes suitable for structural purposes?
- Yes, steel pipes are suitable for structural purposes. They are known for their high strength, durability, and resistance to various environmental conditions, making them ideal for use in constructing buildings, bridges, and other infrastructure projects. Additionally, steel pipes are versatile and can be easily modified and connected to meet specific structural requirements.
- Q:Can steel pipes be used for underground water supply networks?
- Yes, steel pipes can be used for underground water supply networks. Steel pipes are commonly used for underground water supply networks due to their durability, strength, and resistance to corrosion. They can withstand high pressure and are able to handle the weight of the soil and other external forces. Additionally, steel pipes are available in various sizes and can be easily welded, making them suitable for different water supply system requirements. However, it is important to take into consideration factors such as the quality of the soil, the presence of chemicals or corrosive substances, and the need for regular maintenance to ensure the longevity and efficiency of the steel pipes in underground water supply networks.
- Q:Can steel pipes be used for conveying abrasive slurries?
- Yes, steel pipes can be used for conveying abrasive slurries. Steel pipes are known for their durability and strength, making them suitable for handling abrasive materials such as slurries. However, to ensure longevity and prevent excessive wear, it is important to select the appropriate grade of steel and consider factors such as pipe thickness, lining options, and flow velocity. Additionally, implementing proper maintenance and inspection procedures can help to detect and address any wear or corrosion that may occur over time.
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Seamless steel tube for transmission of fluids
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
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