SPIRAL STEEL PIPE 24’‘26‘’ 28‘’ 32‘’LARGE DIAMETER PIPE

SPIRAL STEEL PIPE 24’‘26‘’ 28‘’ 32‘’LARGE DIAMETER PIPE

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 3000 m.t./month

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Packaging & Delivery

Packaging Detail:	standard export packing or as customer's requirement
Delivery Detail:	within 10 - 30 days

Specifications

Spiral Welded Steel Pipes and Tubes
1.Material:Q195-Q235
2.Length:1-12m
3.WT:1.0-14mm
4.O.D.:20-273mm

Spiral Welded Steel Pipes and Tubes

Product Description:

1.Material : Q235,Q345,L245,L290,L360,L415,L450,L485,GrB,X42,46,X52,X56,X60,X65,X70,X80,X100

2,Standard: SY/T5037-2000,GB/T9711-2011,API Spec 5L PSL1/PSL2,ASTM A252\A53,ISO3183,DIN17172,EN10217,JIS G3457,AWWA C200,ASTM A139,ASTM A671,ASTM A672

3.Wall thickness: 3.0mm-30mm

4.Outer diameter: φ168mm-3020mm

5,Length: 5m-12m or as your requirement

6,Corrosion protection standard: DIN30670,DIN30671, AWWAC210, AWWA C203, SY/T0413-2002,SY/T0414-2002

7,Application: Oil, gas, natural gas, water pipe, thermal electricity pipe, steel structure engineering, etc

Q195-q345 Material Steel Pipe's Materials

Elements Material	Chemical Compsition%					Mechanical Property
	C%	Mn%	S%	P%	Si%	Yield Point (Mpa)	Tensile Strength(Mpa)	Elongation (%)
Q195	0.06-0.12	0.25-0.50	<0.050< span="">	<0.045< span="">	<0.030< span="">	>195	315-430	32-33
Q215	0.09-0.15	0.25-0.55	<0.05< span="">	<0.045< span="">	<0.030< span="">	>215	335-450	26-31
Q235	0.12-0.20	0.30-0.70	<0.045< span="">	<0.045< span="">	<0.030< span="">	>235	375-500	24-26
Q345	<0.20< span="">	1.0-1.6	<0.040< span="">	<0.040< span="">	<0.55< span="">	>345	470-630	21-22

Q: How do you calculate the bending moment of a steel pipe?: To calculate the bending moment of a steel pipe, you need to consider both the applied load and the structural properties of the pipe. The bending moment is a measure of the internal forces within the pipe caused by the applied load. The bending moment can be calculated using the following equation: Bending Moment = Load x Distance Here, the load represents the external force acting on the pipe, and the distance is the distance from the point where the load is applied to the point where the bending moment is being calculated. In order to accurately calculate the bending moment, you must also consider the properties of the steel pipe. This includes the pipe's cross-sectional area, second moment of area (also known as the moment of inertia), and the modulus of elasticity. The second moment of area reflects the pipe's resistance to bending and can be calculated based on the dimensions of the pipe's cross-section. The modulus of elasticity represents the pipe's stiffness and can be obtained from material properties data. Once you have determined the load, distance, cross-sectional area, moment of inertia, and modulus of elasticity, you can plug these values into the bending moment equation to calculate the bending moment for the steel pipe. It is important to note that the calculation of bending moment assumes linear elastic behavior, which means that the pipe does not exceed its elastic limit and does not undergo plastic deformation. If the pipe is subjected to loads that exceed its capacity, the calculation of bending moment may not accurately represent the actual behavior of the pipe. In such cases, it is advisable to consult with a structural engineer or use more sophisticated analysis methods to accurately assess the bending moment.

Q: What is the single length of galvanized steel pipe?: The single length of galvanized pipe is 6 meters. The length of galvanized seamless steel tube is uncertain. It depends on the length of seamless steel tube

Q: What materials are used in scaffolding pipes?: Fastener warranty information should be complete, enter the site should be carried out after re sampling technology, performance shall be in accordance with provisions of the "GB15831" steel pipe scaffold fastener, before use should be individually selected, cracks, deformation, bolt slide wire is strictly prohibited.

Q: What is the average lifespan of steel pipes?: The average lifespan of steel pipes can vary depending on various factors such as the quality of the steel used, the environment in which they are installed, and the maintenance and care they receive. However, on average, well-maintained steel pipes can last anywhere from 50 to 100 years or more.

Q: How do you connect steel pipes together?: To connect steel pipes together, there are several methods commonly used in various industries. One commonly used method is welding. Welding involves heating the ends of the steel pipes and then joining them together using a welding rod or wire. This method creates a strong and durable connection that is capable of withstanding high pressures and temperatures. Another method is threading, where threads are cut into the ends of the steel pipes. These threaded ends can then be screwed together using pipe fittings such as couplings or unions. Threading is commonly used for smaller diameter pipes and is advantageous as it allows for easy disassembly and reassembly of the pipes. Flanges can also be used to connect steel pipes together. Flanges are flat, circular discs with holes in them that can be bolted together. They provide a strong and secure connection, especially for large diameter pipes or pipes that need to be easily disconnected for maintenance or repairs. Pipe fittings such as couplings, tees, elbows, or reducers can also be used to connect steel pipes together. These fittings are typically made of steel or other materials and are designed to be welded, threaded, or connected using other methods like grooving or compression. It's important to note that the method used to connect steel pipes together will depend on various factors such as the pipe size, the application, the required strength, and the specific industry standards or codes that need to be followed. Therefore, it's essential to consult with a qualified professional or refer to industry-specific guidelines when choosing the appropriate method for joining steel pipes.

Q: How are steel pipes affected by international trade policies?: Steel pipes can be significantly impacted by international trade policies. These policies can include tariffs, quotas, and other trade barriers that affect the import and export of steel pipes. Changes in trade policies can lead to fluctuations in prices, supply, and demand for steel pipes. Additionally, trade policies can also influence the competitiveness of domestic steel pipe producers in the global market.

Q: What are the different methods of threading steel pipes?: There are several methods of threading steel pipes, including manual threading, machine threading, and cutting threads using a thread cutting die. Manual threading involves using a handheld pipe threading tool to create threads on the pipe. Machine threading utilizes a power-driven pipe threading machine to efficiently create threads. Cutting threads using a thread cutting die involves using a die and a handle to manually cut threads on the pipe. These methods are commonly used in various applications, such as plumbing, construction, and industrial settings.

Q: Can steel pipes be used for hydroelectric power plants?: Yes, steel pipes can be used for hydroelectric power plants. Steel pipes are commonly used to transport water in hydroelectric power plants for various purposes such as intake systems, penstocks, and discharge systems. They offer durability, strength, and resistance to corrosion, making them suitable for the challenging environments found in hydroelectric power generation.

Q: DN150 welded steel tubes one meter multiple: Calculated theoretical weight (Kg) per inch of welded steel pipe = (outside diameter wall thickness) * wall thickness * 0.02466DN150 welded pipe, "150" means nominal diameter of 150mm. Its outer diameter is 165mm.

Q: How are steel pipes protected against external moisture?: Steel pipes are typically protected against external moisture through various methods such as coating them with corrosion-resistant materials like epoxy or zinc, applying protective tapes or wraps, using cathodic protection systems, or utilizing corrosion inhibitors during the manufacturing process. These measures help to prevent the formation of rust and ensure the longevity and reliability of the steel pipes.

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