• Seamless tube ASTM A53/ASTM A 106/API 5L grade B System 1
  • Seamless tube ASTM A53/ASTM A 106/API 5L grade B System 2
Seamless tube ASTM A53/ASTM A 106/API 5L grade B

Seamless tube ASTM A53/ASTM A 106/API 5L grade B

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
10 m.t.
Supply Capability:
5000 m.t./month

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1. Commodity Name: Seamless steel pipe

2. Standard: API,GB,ASTM,ASME,DIN

3. Quality grade:  10#, 20#, A106B, A53B, API 5L B, Q235, Q345, ST37-2, ST 45, ST52.etc.

4. Dimension: 

OD: 1/2"-24"

WT: 2.5-80mm, SCH10~SCH40~XXL

length: 5.8m,6m,8m,9m,12m

5. Technique: Hot Rolled/Cold Rolled/ Cold Drawn

6. application

carbon seamless steel pipes are widely used in gas, water and oil, transpotation;constructions;Bridge,highway,windows of model steel door; building materials;fences;heating facilities Fluid Pipe;conduit pipe,scaffolding pipe.etc.

7. Payment Terms: L/C D/A D/P T/T

8.packing and shipment

Packaged in bundles,as per customers' requirements, it can also bepackagesd as beveled ends, typed marking, black painting, plastic caps protection,woven bags packing

For 20" container the max length is 5.8m; For 40" container the max length is 12m. other options are available based on customer requests. Please discuss when placing orders.

 

 

9. Surface: painted with varnish;

10. Plastic caps at ends.

11. Tolerance: OD   +1%/-1%

                WT  +12.5%/-10%

12. Chemical composition:

 

Models of Steel Pipes

Chemical Component

 

Steel 20

 (ASTM A106B)

C

Si

Mn

P

S

Cu

Ni

Cr

0.17~0.24

0.17~0.37

0.35~0.65

0.035max

0.035max

0.25max

0.25max

0.25max

Steel45 (ASTM 1045)

0.42~0.50

0.17~0.37

0.50~0.80

0.035max

0.035max

0.25max

0.25max

0.25max

16Mn(Q345B)

0.12~0.20

0.20~0.55

1.20~1.60

0.035max

0.035max

0.25max

0.25max

0.25max

45Mn2 ( ASTM1345)

0.42~0.49

0.17~0.37

1.40~1.80

0.035max

0.035max

0.3max

0.3max

0.30max

 

 


Q:What is the process of spiral steel tube production?
X ray flaw detection: 100% X ray industrial television inspection of internal and external weld seams, and image processing system is adopted to ensure the sensitivity of flaw detection.8. press test: the steel pipe is tested by root test on the water pressure test machine to ensure the test pressure of the steel pipe to meet the standard requirement.9. chamfering flat head: the qualified steel pipe is processed at the end of the pipe to achieve the required size of the end of the pipe10. final inspection: ultrasonic and X ray inspection, and magnetic particle inspection at the end of pipe to check for welding problems and pipe end defects.11., marking: qualified steel pipe for oil, in order to prevent corrosion, and according to user requirements for marking.
Q:Can steel pipes be bent or shaped?
Yes, steel pipes can be bent or shaped through various methods such as hot bending, cold bending, or using specialized machinery like pipe benders.
Q:Galvanized steel pipe in addition to good rust resistance, what are the advantages?
Because the zinc has been plated outside the steel tube, the time for oiling or painting outside is omitted, and the construction is more convenient;
Q:What are the different strategies for pipe laying using steel pipes?
There are several strategies for pipe laying using steel pipes, including open cut trenching, trenchless methods such as horizontal directional drilling (HDD), microtunneling, and pipe jacking. In open cut trenching, a trench is dug and the steel pipes are laid in the trench before it is backfilled. HDD involves drilling a small pilot hole underground and then pulling the steel pipes through the hole. Microtunneling uses a remote-controlled boring machine to excavate a tunnel and install the steel pipes simultaneously. Pipe jacking involves pushing the steel pipes into the ground using hydraulic jacks while excavating the soil in front of the pipes. Each strategy has its advantages depending on the specific project requirements and conditions.
Q:How do steel pipes resist corrosion?
Steel pipes resist corrosion through various methods, primarily due to the protective properties of the material itself. Firstly, steel contains a small amount of carbon, which creates a thin, invisible layer on the surface of the pipe known as a passive film. This film acts as a barrier, preventing oxygen and moisture from reaching the underlying steel and thus inhibiting corrosion. Additionally, steel pipes are often coated with protective materials such as zinc, epoxy, or polyethylene, which provide an additional layer of defense against corrosion. Regular maintenance and inspections also play a crucial role in preventing corrosion by identifying and addressing any potential vulnerabilities in the pipes.
Q:Can steel pipes be used for piling?
Yes, steel pipes can be used for piling. Steel pipes are often used as piles in construction projects due to their strength, durability, and ability to withstand heavy loads. They provide strong support for structures and are commonly used in foundation systems for buildings, bridges, and other infrastructure.
Q:Can steel pipes be used for underground cooling systems?
Indeed, underground cooling systems can make use of steel pipes. Thanks to their durability, strength, and resistance to corrosion, steel pipes are widely employed in numerous applications, including underground cooling systems. They are adept at handling the rigorous demands of cooling systems, such as high pressure and temperature requirements. Moreover, steel pipes can be conveniently installed and maintained by means of welding or threading them together. Nonetheless, it is crucial to ensure that the steel pipes are adequately coated or insulated in order to avert corrosion and uphold heat transfer efficiency.
Q:What are the factors to consider when selecting pipe materials for high-temperature applications?
When selecting pipe materials for high-temperature applications, there are several factors that need to be taken into consideration. Firstly, the material's thermal conductivity is crucial. High-temperature applications require materials with high thermal conductivity to ensure efficient heat transfer and prevent heat buildup. Materials such as copper and stainless steel have excellent thermal conductivity and are commonly used in high-temperature pipe installations. Secondly, the material's resistance to thermal expansion is important. When exposed to high temperatures, pipes tend to expand. Therefore, it is crucial to choose materials with low thermal expansion coefficients to prevent deformation and potential pipe failure. Materials like carbon steel and stainless steel exhibit relatively low thermal expansion and are suitable for high-temperature applications. Thirdly, the material's mechanical strength and resistance to corrosion need to be considered. High temperatures can cause certain materials to weaken or corrode, leading to structural failures. It is essential to select materials that can withstand high temperatures without compromising their mechanical strength or corroding easily. Materials like alloy steel and nickel-based alloys are known for their high strength and resistance to corrosion, making them suitable for high-temperature applications. Furthermore, the material's cost and availability should be taken into account. Some high-temperature pipe materials may be expensive or difficult to obtain, which can impact the overall project budget and timeline. It is essential to balance the desired material properties with the project's financial and logistical constraints. Lastly, the specific application requirements and industry standards should be considered. Different industries may have specific guidelines or regulations regarding pipe materials for high-temperature applications. It is crucial to ensure that the selected materials comply with these standards to ensure safety, reliability, and compliance with industry regulations. In conclusion, the factors to consider when selecting pipe materials for high-temperature applications include thermal conductivity, resistance to thermal expansion, mechanical strength, resistance to corrosion, cost and availability, and compliance with industry standards. By carefully evaluating these factors, one can choose the most suitable pipe material to ensure efficient and reliable operation in high-temperature environments.
Q:Can steel pipes be used for signposts or street lighting poles?
Yes, steel pipes can be used for signposts or street lighting poles. Steel is a strong and durable material that can withstand outdoor conditions and support the weight of signs or lighting fixtures. It is commonly used in construction for such purposes due to its strength and longevity.
Q:What are the different end types for steel pipes?
Steel pipes can have various end types, each designed for a specific purpose. Some common end types include: 1. Plain End: This is the simplest type, with no threading or special treatment. It is used for non-threaded applications or when welding is required. 2. Threaded End: These ends have male threads on one or both sides, allowing for easy connection with other threaded fittings or pipes. They are commonly used in plumbing and gas applications that require easy assembly and disassembly. 3. Beveled End: Beveled ends are cut at an angle (usually 30 or 45 degrees) to facilitate welding. The smooth transition between the pipe and the weld joint ensures a strong connection. They are used in construction, oil and gas, and pipeline industries. 4. Coupling End: These ends have female threads on both sides, enabling the joining of two pipes with a coupling or fitting. They are often used in plumbing systems or for easily disassembling pipe sections. 5. Flanged End: Flanged ends have a flared or raised lip on one or both sides, allowing for easy attachment to other flanged components like valves or pumps. They are commonly used in industrial applications requiring secure connections. 6. Socket Weld End: These ends have a socket or recess on one or both sides, allowing for easy connection with socket weld fittings. They provide a strong joint and are commonly used in high-pressure applications, such as petrochemical or power plants. These examples demonstrate the variety of end types available for steel pipes. The choice depends on specific application requirements, including the need for easy assembly, disassembly, or compatibility with other fittings.

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