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

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

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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 furniture and appliances?: Due to their strength, durability, and versatility, steel pipes find widespread use in the production of furniture and appliances. In furniture manufacturing, they are commonly employed to construct the frames and structures of various pieces, including chairs, tables, and beds. Serving as the primary support system, these pipes ensure a sturdy and dependable foundation for the furniture. In appliances, steel pipes serve multiple purposes. They are frequently utilized to create the internal framework and bear the weight of kitchen appliances such as stoves, ovens, and refrigerators. Additionally, steel pipes are commonly found in washing machines, dryers, and dishwashers, facilitating the transportation of water and other fluids throughout the appliance. Moreover, steel pipes are essential in the manufacture of outdoor furniture and equipment that require weather resistance and durability. To safeguard against rust and corrosion, these pipes are often coated with protective materials, thus ensuring the longevity of the furniture and appliances. In conclusion, steel pipes play a vital role in the production of furniture and appliances, providing the necessary strength and support. Their versatility allows for various applications, making them an indispensable component in the manufacturing process of these goods.

Q:What is the shear strength of steel pipes?: The shear strength of steel pipes can vary depending on various factors such as the grade of steel, size and thickness of the pipe, and any additional treatments or coatings applied. Generally, the shear strength of steel pipes is high due to the inherent strength of steel, making them suitable for various structural and industrial applications.

Q:What are the common methods for inspecting the integrity of steel pipes?: To inspect the integrity of steel pipes, various methods are employed. These methods play a vital role in identifying any faults or weaknesses in the pipes that could jeopardize their structural soundness and potentially result in failures or leaks. 1. Visual Inspection: This method involves a visual examination of the external surface of the steel pipe by an inspector. The purpose is to spot any signs of damage, such as corrosion, cracks, or deformities. Although it is a quick and cost-effective approach, it may not be sufficient to detect internal defects. 2. Ultrasonic Testing (UT): UT is a non-destructive testing method that utilizes high-frequency sound waves to identify flaws in steel pipes. A transducer emits ultrasonic waves into the pipe, and any waves that bounce back are analyzed to detect defects like cracks or voids. UT is effective for inspecting both the internal and external aspects of the pipe and can provide precise measurements of defect size and location. 3. Magnetic Particle Inspection (MPI): MPI is primarily employed to detect surface or nearby surface defects in ferromagnetic materials like steel. Magnetic particles are applied to the pipe's surface, and if there is a defect, these particles will gather around it, creating a visible indication. MPI is particularly useful in identifying cracks and other discontinuities that may not be easily visible to the naked eye. 4. Radiographic Testing (RT): RT involves the use of X-rays or gamma rays to examine the internal structure of steel pipes. These rays pass through the material, and an image is recorded on a radiographic film or a digital detector. This method is effective in detecting internal defects such as cracks, voids, or inclusions. However, it necessitates proper safety measures due to the use of radiation. 5. Eddy Current Testing (ECT): ECT is a non-destructive testing method that relies on electromagnetic induction to assess the integrity of steel pipes. An alternating current is passed through a probe, generating an electromagnetic field. Any alterations in the material's electrical conductivity or magnetic permeability caused by defects are detected by the probe, providing information about the pipe's condition. These represent some of the commonly used techniques for inspecting the integrity of steel pipes. Each method possesses its own advantages and limitations, and the choice of inspection method depends on factors such as the type of defect to be identified, access to the pipe, and budgetary considerations. Regular inspection and maintenance using these methods are crucial to ensure the secure and dependable operation of steel pipe systems.

Q:Are steel pipes suitable for potable water supply?: Yes, steel pipes are suitable for potable water supply. They are durable, have a long lifespan, and can withstand high pressure. Additionally, steel pipes are resistant to corrosion and provide a reliable and safe option for transporting potable water.

Q:What are the common materials used for pipe fittings in steel pipes?: Pipe fittings in steel pipes can be made from various materials, including carbon steel, stainless steel, and alloy steel. Carbon steel fittings are popular due to their affordability, strength, and durability, making them suitable for applications in oil and gas, petrochemical, and water distribution systems. On the other hand, stainless steel fittings are highly resistant to corrosion and are commonly used in industries that prioritize hygiene, such as the food and beverage and pharmaceutical sectors. Alloy steel fittings, which consist of elements like chromium, nickel, and molybdenum, are designed to enhance strength and corrosion resistance, making them ideal for high-pressure and high-temperature environments like power plants and chemical facilities. Ultimately, the selection of pipe fitting material in steel pipes depends on the specific requirements of the application and the surrounding conditions.

Q:How are steel pipes protected against external moisture?: Steel pipes can be safeguarded against external moisture in various ways. One commonly employed method involves applying a protective coating or paint to the pipe's surface, which acts as a barrier to prevent direct contact with moisture. Depending on the specific requirements and environment, this coating can be composed of different materials like epoxy, polyethylene, or zinc. Another means of protection is through the utilization of corrosion inhibitors. These inhibitors are added to either the internal or external surfaces of the pipes, creating a protective layer that hinders moisture-induced corrosion. Chemicals like rust converters or rust preventatives are examples of corrosion inhibitors that react with the steel, forming a protective barrier. Cathodic protection is an additional technique utilized to shield steel pipes from external moisture. This technique involves the use of sacrificial anodes or impressed current to generate an electric current that safeguards the steel. Sacrificial anodes, typically made of zinc, aluminum, or magnesium, are attached to the steel pipes and corrode over time instead of the steel, thereby preventing moisture-induced corrosion. Moreover, proper insulation and waterproofing measures play a vital role in protecting steel pipes from external moisture. To provide an extra layer of protection and prevent moisture infiltration, insulation materials like foam or tape are applied to the pipes. Waterproofing measures such as sealants or membranes can also be implemented to ensure no moisture seeps into the pipes. Regular maintenance, including inspections and repairs, is crucial for ensuring the continuous protection of steel pipes against external moisture. By promptly addressing any areas of damage or corrosion, the integrity of the protective measures can be maintained, thereby extending the lifespan of the steel pipes and avoiding costly repairs or replacements in the future.

Q:Can steel pipes be used for underground water lines?: Yes, steel pipes can be used for underground water lines. Steel pipes are commonly used for water distribution systems as they are durable, strong, and resistant to corrosion. However, it is important to consider the specific conditions and requirements of the project, as other types of pipes such as PVC or HDPE may be more suitable in certain situations. Proper coating and insulation should also be applied to steel pipes to protect against underground environmental factors.

Q:What is the difference between carbon steel and alloy steel pipes?: Carbon steel and alloy steel pipes are both types of steel pipes, but they differ in their composition and properties. Carbon steel pipes are made primarily from carbon and iron, with small amounts of other elements such as manganese, silicon, and copper. They are known for their strength and durability, making them a popular choice for various applications in industries such as construction, oil and gas, and automotive. Carbon steel pipes are relatively inexpensive and have good resistance to corrosion. On the other hand, alloy steel pipes are made by adding other alloying elements to carbon steel. These alloying elements can include elements such as chromium, nickel, molybdenum, and vanadium, among others. The addition of these elements enhances the properties of the steel, such as increased strength, improved corrosion resistance, and better heat resistance. Alloy steel pipes are commonly used in high-temperature and high-pressure applications, such as in power plants, refineries, and chemical plants. In terms of cost, alloy steel pipes are generally more expensive than carbon steel pipes due to the additional alloying elements. However, the added benefits in performance and durability can often justify the higher cost. In summary, the main difference between carbon steel and alloy steel pipes lies in their composition and properties. Carbon steel pipes are primarily made of carbon and iron, while alloy steel pipes contain additional alloying elements for enhanced properties. Carbon steel pipes are known for their strength and affordability, while alloy steel pipes offer improved strength, corrosion resistance, and heat resistance.

Q:What are the common applications of steel pipes?: Steel pipes have a wide range of common applications, including plumbing systems, transportation of liquids and gases, construction projects, oil and gas exploration, as well as in industrial processes such as manufacturing and power generation.

Q:How are steel pipes used in desalination plants?: Steel pipes are used in desalination plants to transport water, brine, and chemicals throughout the facility. They are highly durable and corrosion-resistant, making them ideal for handling the high-pressure and corrosive nature of the desalination process. Steel pipes ensure efficient and reliable water distribution, contributing to the overall effectiveness of desalination plants in converting seawater into fresh water.

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