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
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: Can steel pipes be used for oil drilling operations?: Yes, steel pipes are commonly used for oil drilling operations. They possess the necessary strength and durability to withstand the harsh conditions of drilling and transporting oil. Additionally, steel pipes have excellent corrosion resistance, making them suitable for long-term use in the oil and gas industry.

Q: What is the difference between steel pipes and PPR pipes?: Steel pipes are made of a durable and strong material, steel, which makes them suitable for carrying high-pressure fluids and gases. On the other hand, PPR (polypropylene random copolymer) pipes are made of a plastic material, which makes them lightweight, corrosion-resistant, and easy to install. PPR pipes are commonly used for plumbing systems, while steel pipes are more commonly used for industrial applications and heavy-duty purposes.

Q: Can steel pipes be used for both high-pressure and low-pressure systems?: Yes, steel pipes can be used for both high-pressure and low-pressure systems. Steel is known for its durability, strength, and resistance to extreme conditions, making it suitable for various applications. Whether it is transporting liquids or gases in high-pressure systems or low-pressure systems, steel pipes can efficiently handle the demands of both.

Q: How do you calculate the flow rate through a steel pipe?: Several factors need to be considered in order to calculate the flow rate through a steel pipe. The crucial factors include the pipe's diameter, the pressure difference across the pipe, and the properties of the fluid flowing through it. Accurate measurement of the inside diameter of the steel pipe is the first step. This measurement is vital as it determines the cross-sectional area through which the fluid flows. Ensure that the units used for the diameter measurement are consistent with the units used for other measurements. Next, determine the pressure difference across the pipe. This can be accomplished by measuring the pressure at two points along the pipe, typically at the inlet and outlet. It is important to take the pressure measurements at the same height in order to avoid any discrepancies. The pressure difference is usually given in units of pressure, such as psi, kPa, or bar. Once you have the diameter and pressure difference, you can utilize either the Bernoulli equation or the Darcy-Weisbach equation to calculate the flow rate. The Bernoulli equation establishes a relationship between the pressure difference and the fluid's velocity. However, this equation assumes ideal conditions and overlooks factors like friction losses, viscosity, and turbulence. On the other hand, the Darcy-Weisbach equation is more accurate as it considers these factors. To employ the Darcy-Weisbach equation, you must be aware of the fluid's properties that flow through the pipe, such as density and viscosity. These properties can be determined either through experimentation or by referring to literature values. After gathering all the necessary information, you can use the Darcy-Weisbach equation: Q = (π/4) * D^2 * √[(2 * ΔP) / (ρ * f * L)] Where: Q represents the flow rate, measured in cubic meters per second or any other consistent units. D is the diameter of the pipe, measured in meters or any other consistent units. ΔP is the pressure difference across the pipe, measured in Pascals or any other consistent units. ρ is the density of the fluid flowing through the pipe, measured in kilograms per cubic meter or any other consistent units. f signifies the friction factor, which relies on the Reynolds number and the roughness of the pipe. L represents the length of the pipe, measured in meters or any other consistent units. By substituting the appropriate values for all the variables, you can accurately calculate the flow rate through the steel pipe.

Q: How are steel pipes used in the manufacturing of oil refineries?: Steel pipes are essential in the manufacturing of oil refineries as they are used for various purposes such as transporting crude oil, petroleum products, and other fluids throughout the facility. These pipes are used for the construction of pipelines, storage tanks, and various process equipment within the refinery. They provide a reliable and durable means of conveying and distributing fluids necessary for the refining process, ensuring efficient operations and the safe transportation of oil and its byproducts.

Q: What is the difference between cast iron and steel pipes?: Cast iron and steel pipes are both commonly used in plumbing and construction applications, but they differ in several key aspects. 1. Composition: Cast iron pipes are made of a predominantly iron alloy, with small amounts of carbon and other elements. On the other hand, steel pipes are primarily composed of iron, but they also contain varying amounts of carbon and other alloying elements such as manganese, chromium, and nickel. 2. Strength: Steel pipes are generally stronger than cast iron pipes due to their higher carbon content and alloying elements. This makes steel pipes better suited for high-pressure applications or areas with heavy loads. 3. Flexibility: Steel pipes have more flexibility than cast iron pipes, allowing for easier installation and adjustment. Cast iron pipes, due to their brittleness, are less flexible and more prone to cracking or breaking if subjected to excessive stress or impact. 4. Corrosion resistance: Steel pipes are typically more susceptible to corrosion than cast iron pipes. However, this can be mitigated through various protective coatings or treatments applied to the steel pipes. Cast iron pipes, on the other hand, have inherent corrosion resistance due to the formation of a protective layer of rust on their surface. 5. Noise insulation: Cast iron pipes have excellent noise insulation properties due to their dense and heavy composition. This makes them ideal for applications where noise reduction is desired, such as in residential plumbing systems. Steel pipes, being lighter and less dense, do not offer the same level of noise insulation. 6. Longevity: Cast iron pipes have a long lifespan and can last for over 100 years when properly maintained. Steel pipes, while still durable, may have a shorter lifespan depending on factors such as the quality of the steel used, environmental conditions, and maintenance practices. In summary, the main differences between cast iron and steel pipes lie in their composition, strength, flexibility, corrosion resistance, noise insulation, and longevity. The choice between the two will depend on the specific requirements of the application, such as the desired strength, durability, and noise reduction properties.

Q: Is there any difference between thermal expansion seamless steel pipe and seamless steel pipe?: One is thermal expansion on a bar, that is, piercing between the bars and expanding the tube with a little bit of mandrel. The other is to expand the formed tube before it is heated so that the defects in the pipe will be enlarged. Comparatively speaking, the quality of the first kind is better than the second, and you should belong to the second kind. Compared with the original seamless seamless tube, the quality and chemical properties are certainly different. The price will be cheaper, too.

Q: What is the difference between API 5L and ASTM A106 steel pipes?: API 5L and ASTM A106 are two commonly used specifications for seamless carbon steel pipe. While both specifications cover similar materials, they have different requirements for chemical composition, manufacturing processes, mechanical properties, and testing. API 5L is a specification created by the American Petroleum Institute (API) for line pipe used in oil and gas transportation. It covers seamless and welded steel pipe suitable for use in conveying gas, water, and oil in the natural gas and petroleum industries. API 5L specifies the minimum requirements for the manufacture of two product specification levels (PSL 1 and PSL 2) of seamless and welded steel pipes, with different chemical composition and mechanical properties. On the other hand, ASTM A106 is a specification developed by the American Society for Testing and Materials (ASTM) for seamless carbon steel pipe for high-temperature service. It covers seamless carbon steel pipe for high-temperature service in NPS 1/8" to NPS 48" inclusive, with nominal (average) wall thickness as given in ANSI B36.10. ASTM A106 provides requirements for chemical composition, manufacturing processes, mechanical properties, and testing. One key difference between API 5L and ASTM A106 is the intended use of the pipe. API 5L is specifically designed for transmission of liquid and gas, while ASTM A106 is used for high-temperature service. The chemical composition and mechanical properties of the steel may also vary between the two specifications, depending on the grade and type of steel being used. In summary, while both API 5L and ASTM A106 are widely used specifications for carbon steel pipe, they have distinct differences in terms of their intended use, chemical composition, manufacturing processes, mechanical properties, and testing requirements. It is important to carefully consider these factors when selecting the appropriate steel pipe for a specific application.

Q: Can steel pipes be used for transporting chemicals?: Yes, steel pipes can be used for transporting chemicals. Steel pipes are known for their high strength and durability, making them suitable for handling various chemicals, including corrosive substances. Additionally, steel pipes can withstand high pressure and temperature conditions, ensuring the safe transportation of chemicals. However, it is essential to select the appropriate grade of steel and implement proper coating or lining to prevent chemical reactions or corrosion that may compromise the integrity of the pipes.

Q: What is the difference between steel pipe and aluminum pipe?: The main difference between steel pipe and aluminum pipe lies in their composition and physical properties. Steel pipes are primarily made of iron and carbon, with other elements added to enhance their strength and corrosion resistance. On the other hand, aluminum pipes are made entirely of aluminum, which is a lightweight and highly corrosion-resistant metal. One significant distinction between steel and aluminum pipes is their weight. Steel is a denser material compared to aluminum, meaning that steel pipes are generally heavier and sturdier. This characteristic makes steel pipes suitable for applications requiring higher structural strength and load-bearing capabilities. Aluminum pipes, on the other hand, offer distinct advantages due to their lightweight nature. They are around one-third the weight of steel pipes, making them easier to handle, transport, and install. This lightweight property also makes aluminum pipes more suitable for applications where weight reduction is crucial, such as in aerospace and automotive industries. Another crucial aspect to consider is corrosion resistance. Steel pipes are prone to rusting and corrosion, especially when exposed to moisture or corrosive environments. To combat this, steel pipes are often coated with protective layers or galvanized to enhance their resistance to corrosion. Aluminum pipes, on the other hand, have excellent natural corrosion resistance due to the formation of a thin layer of aluminum oxide on their surface. This oxide layer acts as a protective barrier, preventing further corrosion and degradation. Cost is another factor to consider when comparing steel and aluminum pipes. Steel pipes are generally more cost-effective compared to aluminum pipes, primarily due to the lower cost of raw materials and manufacturing processes involved. However, it is essential to consider the specific requirements and durability needed for the intended application, as the long-term maintenance costs and lifespan of steel and aluminum pipes may vary. In summary, the difference between steel and aluminum pipes can be summarized based on their weight, strength, corrosion resistance, and cost. Steel pipes are heavier, stronger, and more prone to rusting and corrosion but are generally more cost-effective. Aluminum pipes are lightweight, corrosion-resistant, and costlier but offer advantages in weight reduction and specific applications where corrosion resistance is crucial. Ultimately, the choice between steel and aluminum pipes depends on the specific needs of the project and the desired properties for optimal performance.

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