Seamless steel pipe ASTM A106/API 5L/ASTM A53 GR.B 20# high quality

Seamless steel pipe ASTM A106/API 5L/ASTM A53 GR.B 20# high quality

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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
Steel 20 (ASTM A106B)	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: How are steel pipes used in the manufacturing of heat exchangers?: Steel pipes are commonly used in the manufacturing of heat exchangers due to their strength, durability, and ability to withstand high temperatures and pressures. These pipes are typically used to create the primary heat transfer surfaces within the heat exchanger, allowing for efficient transfer of heat between two fluids. The steel pipes are often arranged in a coil or tube bundle configuration, providing a large surface area for heat exchange to occur. Additionally, the corrosion-resistant properties of steel make it an ideal choice for handling various fluids in heat exchanger applications.

Q: Can steel pipes be used for steam applications?: Yes, steel pipes can be used for steam applications. Steel pipes have high strength and durability, making them suitable for carrying high-pressure steam. They can withstand the high temperatures and pressures associated with steam, making them a reliable choice for steam transportation in various industries.

Q: What is the maximum length of steel pipes available in the market?: The maximum length of steel pipes available in the market can vary depending on various factors such as the type of steel, manufacturing capabilities, transportation limitations, and customer requirements. However, in general, steel pipes can be manufactured in lengths of up to 12 meters (40 feet) or even longer. It is important to note that longer lengths may be more challenging to handle and transport, and may require specialized equipment or techniques. Ultimately, the maximum length of steel pipes available in the market will be determined by the specific needs and capabilities of the industry and customers.

Q: How are steel pipes used in the construction of oil storage tanks?: Steel pipes are commonly used in the construction of oil storage tanks as they provide strength, durability, and corrosion resistance. These pipes are used to connect various components of the tank, such as the walls, roof, and bottom, ensuring a secure and leak-proof structure. Additionally, steel pipes are also used to transport oil within the tank and for the installation of necessary fittings, valves, and other equipment.

Q: What is the difference between steel pipe and copper pipe?: The composition and properties of steel pipe and copper pipe are what set them apart. Steel pipe is made from carbon steel, an alloy of iron and carbon, while copper pipe is made from naturally occurring copper. Durability is a key distinction. Steel pipe is renowned for its strength and resilience, making it suitable for high-pressure situations and harsh environments. It is highly resistant to corrosion, ensuring its longevity. On the other hand, copper pipe is prized for its malleability and ease of installation. It is not as durable as steel and can corrode over time, particularly when exposed to certain chemicals or aggressive water conditions. Another difference lies in thermal conductivity. Copper pipe is an exceptional heat conductor, making it perfect for applications requiring efficient heat transfer, such as plumbing systems for hot water supply. Conversely, steel pipe has lower thermal conductivity compared to copper, which may affect its performance in specific applications. Cost is also an important factor. Copper pipe tends to be pricier due to the higher cost of copper as a raw material. Moreover, installing copper pipe necessitates specialized tools and techniques, which can increase overall expenses. Conversely, steel pipe is often more cost-effective and easier to work with, making it a popular choice for various applications. In conclusion, the primary discrepancies between steel pipe and copper pipe encompass their composition, durability, thermal conductivity, and cost. Each type possesses its own advantages and disadvantages, and the selection between them hinges on the specific requirements of the given application.

Q: Are steel pipes suitable for fire protection systems?: Yes, steel pipes are suitable for fire protection systems. They have excellent fire resistance properties and can withstand high temperatures, making them ideal for conveying water or other fire suppressants in fire protection systems. Steel pipes are also strong, durable, and resistant to corrosion, ensuring long-term reliability and effectiveness in fire protection applications.

Q: Can steel pipes be used for firefighting systems?: Yes, steel pipes can be used for firefighting systems. Steel pipes are commonly used for their durability and resistance to high temperatures, making them suitable for transporting water and other fire suppression agents. They are typically used in larger commercial or industrial buildings where the fire protection system requires a higher flow rate and pressure. Steel pipes also have the advantage of being able to withstand external forces and impacts, ensuring the integrity of the firefighting system. Additionally, steel pipes can be easily connected, making them convenient for installation and maintenance purposes. However, it is important to ensure that the steel pipes used for firefighting systems are properly treated to prevent corrosion and rusting, as this can compromise their effectiveness in an emergency situation. Regular inspections and maintenance should be conducted to ensure the reliability and functionality of the steel pipes within the firefighting system.

Q: How do steel pipes handle water hammer in high-rise buildings?: Steel pipes in high-rise buildings are designed to handle water hammer by incorporating various features. Firstly, these pipes are often equipped with pressure relief valves or surge tanks that absorb and dissipate the sudden pressure changes caused by water hammer. Additionally, engineers use techniques such as proper pipe sizing, installation of air chambers, and use of flexible connectors to minimize the effects of water hammer. These measures help to reduce the sudden pressure spikes and prevent damage to the pipes and other plumbing components in high-rise buildings.

Q: How are steel pipes cleaned and flushed?: Steel pipes are cleaned and flushed using a variety of methods. One common method is high-pressure water jetting, where water is forcefully sprayed through the pipes to remove debris and sediments. Chemical cleaning agents are also used to dissolve any stubborn deposits. Additionally, mechanical methods such as using wire brushes or pigs (devices inserted into the pipes to scrape the interior) can be employed to remove any remaining buildup. Regular maintenance and inspection are crucial to ensure the cleanliness and efficiency of steel pipes.

Q: How are steel pipes used in the shipbuilding industry?: Steel pipes are extensively used in the shipbuilding industry for various purposes such as carrying fluids, gases, and other materials throughout the ship. They are used for the ship's plumbing systems, including water supply, drainage, and firefighting systems. Steel pipes are also used for the ship's ventilation and air conditioning systems, as well as for fuel and oil transfer. In addition, they play a crucial role in the construction of the ship's structural framework, providing strength and durability.

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