Carbon seamless steel pipe DIN17175 ST35 high quality

Carbon seamless steel pipe DIN17175 ST35 high quality

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 10 m.t.

Supply Capability:: 10000 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 do you determine the maximum allowable stress for a steel pipe?: To determine the maximum allowable stress for a steel pipe, several factors need to be considered. Firstly, the type of steel used in the pipe is crucial as different types of steel have different mechanical properties and strengths. Secondly, the dimensions and thickness of the pipe play a significant role in determining its maximum allowable stress. Thicker pipes generally have higher allowable stresses compared to thinner ones. Additionally, it is important to consider the operating conditions under which the pipe will be subjected. This includes factors such as the temperature, pressure, and the type of fluid flowing through the pipe. These conditions can greatly affect the maximum allowable stress as high temperatures or corrosive fluids may weaken the steel and reduce its strength. To determine the maximum allowable stress, engineers typically refer to industry standards and codes such as the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code and the American Petroleum Institute (API) standards. These standards provide guidelines and formulas for calculating the maximum allowable stress based on the material properties, dimensions, and operating conditions of the pipe. It is important to note that determining the maximum allowable stress is a critical step in ensuring the structural integrity and safety of the steel pipe. It requires a thorough understanding of the materials, design considerations, and industry standards. Therefore, it is recommended to consult with experienced engineers or professionals who specialize in piping design and analysis to accurately determine the maximum allowable stress for a steel pipe.

Q: Are steel pipes suitable for potable water supply?: Yes, steel pipes are suitable for potable water supply. They are commonly used for water distribution systems due to their durability, strength, and resistance to corrosion. However, it is important to ensure that the steel pipes are properly coated or lined to prevent any potential contamination of the water supply.

Q: How are steel pipes used in the construction of chemical plants?: Steel pipes are commonly used in the construction of chemical plants due to their excellent durability, strength, and resistance to corrosion. They are used to transport various chemicals, gases, and fluids throughout the plant, ensuring a safe and efficient flow. These pipes are also used for structural support, providing stability to the plant's infrastructure. Additionally, steel pipes are often used for the installation of heating, ventilation, and air conditioning systems, as well as for the construction of process equipment and storage tanks within the chemical plant.

Q: Can steel pipes be used for conveying solids?: Yes, steel pipes can be used for conveying solids. Steel pipes are commonly used in various industries to transport solid materials such as ores, minerals, grains, and other bulk materials. They are durable, resistant to high pressure and temperature, and have a smooth interior surface that allows for efficient flow of solids.

Q: What are the different types of steel pipe couplings?: In the market, there exists a variety of steel pipe couplings to cater to specific applications and needs. The following are some of the commonly used types: 1. Threaded Coupling: This coupling is equipped with threaded ends for easy installation and removal. It is suitable for low-pressure applications and can be used with both threaded and non-threaded pipes. 2. Compression Coupling: Designed to create a secure and leak-proof connection between two pipes, compression couplings consist of two pieces that are tightened together using compression nuts or sleeves, thus forming a tight seal. 3. Slip-On Coupling: A slip-on coupling is a simple and convenient option that can be easily installed by sliding it onto the pipe ends and then securing it in place through welding or bolting. It is commonly used to join pipes with plain ends and is suitable for both high and low-pressure applications. 4. Grooved Coupling: Grooved couplings possess a groove on both pipe ends, allowing them to be connected by using a rubber gasket and coupling housing. This type of coupling ensures a reliable and flexible connection that can accommodate minor misalignments and vibrations. 5. Flanged Coupling: Consisting of two flanges bolted together with a gasket in between, flanged couplings are widely used in high-pressure applications due to their strength and reliability. 6. Welded Coupling: Welded couplings are permanently joined to the pipe ends through a welding process. This type of coupling guarantees a strong and durable connection that is resistant to leaks and vibrations. These examples represent only a fraction of the steel pipe couplings available. The choice of coupling depends on factors such as the pipe type, application requirements, and the desired level of strength and flexibility. It is crucial to select the appropriate coupling to ensure a secure and dependable connection between pipes.

Q: How do you calculate the pipe flow rate for steel pipes?: To calculate the pipe flow rate for steel pipes, you will need to consider various factors. Firstly, determine the inside diameter of the pipe, typically denoted as D. Next, measure the length of the pipe, denoted as L. Additionally, you will need to know the pressure drop, ΔP, across the pipe and the fluid density, ρ. Once you have this information, you can use the Darcy-Weisbach equation or the Hazen-Williams equation to calculate the flow rate. The Darcy-Weisbach equation is commonly used for pipes with turbulent flow, while the Hazen-Williams equation is often used for pipes with laminar flow. For the Darcy-Weisbach equation, the formula is: Q = (π/4) * D^2 * √(2ΔP/ρ) Where Q is the flow rate in cubic meters per second, D is the inside diameter of the pipe in meters, ΔP is the pressure drop across the pipe in pascals, and ρ is the fluid density in kilograms per cubic meter. For the Hazen-Williams equation, the formula is: Q = C * (D^2.63) * (ΔP^0.54) * (L^0.63) Where Q is the flow rate in cubic meters per second, D is the inside diameter of the pipe in meters, ΔP is the pressure drop across the pipe in pascals, L is the length of the pipe in meters, and C is the Hazen-Williams coefficient which depends on the roughness of the pipe. To accurately calculate the pipe flow rate, it is important to ensure that the units of measurement are consistent throughout the calculation. Additionally, it is crucial to have accurate measurements of the inside diameter, length, pressure drop, and fluid density to obtain reliable results.

Q: What is the role of steel pipes in the transportation of petroleum products?: Steel pipes play a crucial role in the transportation of petroleum products as they provide a safe and efficient means of transferring oil and gas over long distances. These pipes are strong, durable, and resistant to corrosion, ensuring the integrity of the pipelines and preventing leakage or contamination of the products. Additionally, steel pipes have high heat resistance, making them suitable for transporting hot petroleum products. Overall, steel pipes serve as the backbone of the petroleum transportation infrastructure, facilitating the smooth and reliable delivery of these essential energy resources.

Q: What are the different types of steel pipe supports for seismic applications?: Some of the different types of steel pipe supports for seismic applications include sway braces, rigid braces, snubbers, and spring hangers.

Q: What are the factors to consider when selecting a steel pipe for a specific application?: When selecting a steel pipe for a specific application, several factors need to be considered. These include the type of fluid or gas being transported, the pressure and temperature conditions, the size and dimensions required, the desired corrosion resistance, and the overall budget for the project. It is also crucial to assess the pipe's material properties, such as its strength, ductility, and toughness, to ensure it can withstand the operational demands of the application. Additionally, factors like the pipe's manufacturing process, compatibility with joining methods, and any specific industry standards or regulations should be taken into account.

Q: How do you calculate the weight of a steel pipe?: To calculate the weight of a steel pipe, you need to know its outer diameter, wall thickness, and length. First, calculate the cross-sectional area of the pipe by subtracting the inner diameter from the outer diameter and multiplying it by π. Then, multiply the cross-sectional area by the wall thickness and length of the pipe to find its volume. Finally, multiply the volume by the density of steel to calculate the weight of the steel pipe.

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