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 threaded for connection?: Steel pipes are threaded for connection using a threading machine that cuts grooves into the pipe's outer surface. The machine rotates the pipe while a die cuts the threads, creating a spiral pattern. This threading allows pipes to be securely connected by screwing them together, providing a tight and leak-free joint.

Q:What are the different types of steel pipe coatings for offshore applications?: There are several types of steel pipe coatings commonly used for offshore applications. These include fusion bonded epoxy (FBE) coatings, polyethylene (PE) coatings, polypropylene (PP) coatings, and three-layer polyethylene (3LPE) or polypropylene (3LPP) coatings. Each coating has its own unique properties that make it suitable for specific offshore conditions and requirements.

Q:What are the different types of gaskets used with steel pipes?: There are several types of gaskets commonly used with steel pipes, including ring type joint (RTJ) gaskets, spiral wound gaskets, and flat gaskets. RTJ gaskets are designed to create a tight seal by compressing between two flanges, while spiral wound gaskets consist of a metal winding and filler material for enhanced sealing properties. Flat gaskets are typically made from rubber or non-metallic materials and are used for lower pressure applications.

Q:What is galvanized steel pipe?: Galvanized steel pipe is a type of steel pipe that has been coated with a layer of zinc to protect it from corrosion. This process involves immersing the steel pipe in a molten zinc bath, which creates a protective barrier on the surface of the pipe. The zinc coating helps to prolong the lifespan of the steel pipe, making it resistant to rust and other forms of corrosion. Galvanized steel pipes are commonly used in plumbing, water supply, and construction applications.

Q:How do steel pipes handle chemical exposure?: Steel pipes are generally known for their excellent resistance to chemical exposure. The high strength and durability of steel make it a reliable material for handling various chemicals. Steel pipes can withstand exposure to a wide range of corrosive substances such as acids, alkalis, solvents, and gases without experiencing significant degradation or damage. One of the main reasons steel pipes handle chemical exposure well is due to their inherent corrosion resistance. Steel is naturally resistant to corrosion and can form a protective oxide layer on its surface, which acts as a barrier against chemical attack. Additionally, steel pipes can be coated or lined with corrosion-resistant materials such as epoxy, polyethylene, or cement to provide extra protection against aggressive chemicals. Moreover, steel pipes are commonly used in industrial applications where they come into contact with different types of chemicals. They are extensively used in chemical plants, refineries, water treatment facilities, and other industries where chemical transportation or storage is required. Steel pipes can handle the high pressures and temperatures associated with these processes while maintaining their structural integrity and chemical resistance. However, it is important to note that the resistance of steel pipes to chemical exposure can vary depending on the specific type and concentration of the chemical. Some highly corrosive substances may require additional measures such as specialized coatings or alloys to ensure long-term protection. In summary, steel pipes are generally well-suited for handling chemical exposure due to their inherent corrosion resistance, durability, and versatility. Their ability to withstand a wide range of corrosive substances makes them a reliable choice for various industrial applications involving chemical transportation and storage.

Q:How are steel pipes used in airport infrastructure?: Steel pipes are widely used in airport infrastructure for various purposes. They are used for constructing the framework of airport terminals, hangars, and other buildings. Steel pipes are also used for the installation of HVAC systems, electrical wiring, and plumbing in airport facilities. Additionally, steel pipes are used for the construction of runways, taxiways, and aprons, providing a strong and durable foundation for aircraft operations.

Q:How are steel pipes used in transportation?: Steel pipes are commonly used in transportation for various purposes, such as in the construction of pipelines for transporting oil, gas, and water. They are also utilized in manufacturing vehicles, ships, and airplanes, where they serve as structural components or exhaust systems. Additionally, steel pipes are employed in the transportation of goods through conveyor systems and in the construction of railings and barriers for safety on roads and bridges.

Q:How long do steel pipes typically last?: Steel pipes typically last for several decades to over a century, depending on factors such as the quality of the steel, environmental conditions, and maintenance practices.

Q:What are the different types of pipe connections used with steel pipes?: There are several types of pipe connections commonly used with steel pipes. Some of the most common types include: 1. Threaded connections: These connections involve threading the ends of the pipe and using threaded fittings to connect them. This type of connection is typically used for smaller diameter pipes and is easy to install and dismantle. 2. Welded connections: Welding is a common method used to connect steel pipes. It involves joining the ends of the pipes together by melting the metal and fusing them together. Welded connections are durable and strong, making them suitable for high-pressure applications. 3. Flanged connections: Flanges are used to connect pipes by bolting them together. Flanged connections are commonly used in industrial applications and are often used for larger diameter pipes or when the pipe needs to be easily disassembled for maintenance purposes. 4. Grooved connections: Grooved connections involve using grooved fittings that have grooves on the inside to connect the pipes. These connections are often used in fire protection systems and are quick and easy to install. 5. Compression connections: Compression fittings are used to connect steel pipes by compressing a ferrule onto the pipe. This type of connection is commonly used in plumbing applications and provides a tight and secure seal. 6. Mechanical connections: Mechanical connections, such as couplings or clamps, are used to connect steel pipes without the need for welding or threading. These connections are often used for temporary or emergency repairs. Each type of pipe connection has its advantages and disadvantages, and the choice of connection method will depend on factors such as the application, pipe size, and installation requirements. It is important to carefully consider these factors to ensure a secure and reliable connection for steel pipes.

Q:What are the different types of joints used in steel pipes?: There are several types of joints commonly used in steel pipes, including threaded, welded, flanged, and grooved joints.

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