• SPIRAL STEEL PIPE 56’‘ 60’‘ LARGE DIAMETER PIPE System 1
SPIRAL STEEL PIPE 56’‘ 60’‘ LARGE DIAMETER PIPE

SPIRAL STEEL PIPE 56’‘ 60’‘ LARGE DIAMETER PIPE

Ref Price:
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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:What is the maximum temperature and pressure that steel pipes can withstand?
The maximum temperature and pressure that steel pipes can withstand vary depending on the specific grade and type of steel being used. However, in general, steel pipes can withstand high temperatures and pressures due to their strong and durable nature. For high-temperature applications, such as in steam or heat transfer systems, steel pipes can typically withstand temperatures up to 1000 degrees Celsius (1832 degrees Fahrenheit) or even higher. It is important to note that the specific temperature limit may vary depending on the alloy composition and heat treatment of the steel. Regarding pressure, steel pipes are known for their excellent strength and resistance to internal and external pressure. The maximum pressure that steel pipes can withstand will depend on factors such as the pipe diameter, wall thickness, and material strength. In industrial applications, steel pipes can withstand pressures ranging from a few hundred psi (pounds per square inch) to several thousand psi. To ensure the safe operation of steel pipes under high temperatures and pressures, it is crucial to follow industry standards and guidelines, as well as perform regular inspections and maintenance. Consulting with engineers and professionals experienced in steel pipe systems can provide more specific information regarding the maximum temperature and pressure limits for a particular steel pipe application.
Q:How are steel pipes used in the telecommunications industry?
Steel pipes are used in the telecommunications industry primarily for the installation and protection of underground fiber optic cables. These pipes provide a sturdy and durable infrastructure for the cables, ensuring their safety from external factors such as weather conditions or accidental damage. Additionally, steel pipes are also used for the construction of telecommunication towers, providing the necessary strength and support for antennas and other equipment.
Q:How are steel pipes used in nuclear power plants?
Steel pipes are extensively used in nuclear power plants for various purposes. They are primarily used for the transportation of coolant, such as water or gas, which helps in removing heat from the reactor core. Steel pipes are also used to convey steam generated by the reactor to the turbine, where it is used to generate electricity. Additionally, steel pipes are utilized for the transportation of various fluids, such as lubricants and chemicals, for different processes within the plant. The durability, strength, and resistance to high temperatures and pressure make steel pipes an ideal choice for these critical applications in nuclear power plants.
Q:What is the difference between schedule 10 and schedule 40 steel pipes?
Schedule 10 and schedule 40 steel pipes find common usage in various industries for different purposes, differing in their wall thickness and pressure ratings. When it comes to wall thickness, schedule 10 pipes possess a slimmer wall in comparison to schedule 40 pipes. This attribute results in schedule 10 pipes having a smaller internal diameter and the ability to withstand lower pressure compared to schedule 40 pipes. While schedule 10 pipes typically have a wall thickness of 0.109 inches, schedule 40 pipes boast a wall thickness of 0.154 inches. The thinner walls of schedule 10 pipes make them ideal for applications with low pressure, such as domestic water supply, drainage systems, and general plumbing. Additionally, they are frequently employed in lightweight structures or where weight is a significant concern. On the other hand, schedule 40 pipes are specifically designed to handle higher pressure and are commonly utilized in industrial settings. These pipes are often found in applications such as oil and gas pipelines, chemical processing plants, and high-pressure fluid systems. The thicker walls of schedule 40 pipes provide them with enhanced strength and durability, enabling them to withstand higher pressure and stress. To summarize, the primary distinction between schedule 10 and schedule 40 steel pipes lies in their wall thickness and pressure ratings. Schedule 10 pipes have a thinner wall and are suitable for low-pressure applications, while schedule 40 pipes possess a thicker wall and can withstand higher pressure. It is crucial to select the appropriate schedule based on the specific requirements and pressure limitations of the intended application.
Q:What is the difference between steel pipes and PVC-U pipes?
Steel pipes are made of a durable and strong material, while PVC-U pipes are made of a plastic material. Steel pipes are typically used for high-pressure and heavy-duty applications, as they can withstand harsh conditions and have a longer lifespan. PVC-U pipes, on the other hand, are lighter in weight, easier to handle, and resistant to corrosion and chemicals. They are commonly used for low-pressure applications and are more cost-effective.
Q:What are the common defects found in steel pipes?
Some common defects found in steel pipes include corrosion, cracks, dents, and leaks. Other defects may include misalignment or misshapen sections, improper welding, and brittleness.
Q:How are steel pipes used in the manufacturing of pressure vessels?
Steel pipes are commonly used in the manufacturing of pressure vessels as they provide the necessary strength and durability to withstand high internal pressure. These pipes are welded or seamless and are often used as the main structural component of the vessel. They allow for the efficient flow of fluids or gases within the vessel and provide a reliable and secure containment system for various industrial applications.
Q:How do you calculate the flow rate of water in steel pipes?
To calculate the flow rate of water in steel pipes, you need to consider the pipe's diameter, length, and the pressure difference across the pipe. Using formulas like the Darcy-Weisbach equation or the Hazen-Williams equation, you can determine the flow rate by plugging in these variables along with the fluid properties.
Q:Can steel pipes be used for sewage systems?
Yes, steel pipes can be used for sewage systems. Steel pipes are commonly used in sewage systems for their durability, strength, and resistance to corrosion. They are suitable for transporting sewage and wastewater, ensuring reliable and long-lasting performance.
Q:How do you transport steel pipes safely?
Steel pipes can be transported safely by properly securing them using appropriate restraints, such as straps or chains, to prevent shifting or movement during transit. Additionally, using suitable equipment and vehicles, such as flatbed trucks or trailers, with adequate support and cushioning, can help ensure the safe transportation of steel pipes. Regular inspections of the securing arrangements and adherence to relevant safety regulations are also crucial to maintain the safe transport of steel pipes.

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