• SPIRAL STEEL PIPE 50‘‘ ASTM API LARGE DIAMETER PIPE System 1
  • SPIRAL STEEL PIPE 50‘‘ ASTM API LARGE DIAMETER PIPE System 2
  • SPIRAL STEEL PIPE 50‘‘ ASTM API LARGE DIAMETER PIPE System 3
  • SPIRAL STEEL PIPE 50‘‘ ASTM API LARGE DIAMETER PIPE System 4
  • SPIRAL STEEL PIPE 50‘‘ ASTM API LARGE DIAMETER PIPE System 5
  • SPIRAL STEEL PIPE 50‘‘ ASTM API LARGE DIAMETER PIPE System 6
SPIRAL STEEL PIPE 50‘‘ ASTM API LARGE DIAMETER PIPE

SPIRAL STEEL PIPE 50‘‘ ASTM API 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 are steel pipes used in the manufacturing of power plants?
Steel pipes are used in power plants for various applications. They are commonly used to transport fluids such as water, steam, and fuel in the power generation process. These pipes are essential for the safe and efficient operation of power plants, as they can withstand high temperatures and pressures. Additionally, steel pipes are used for structural purposes in the construction of power plant components such as boilers, heat exchangers, and condensers. Overall, steel pipes play a crucial role in the manufacturing and operation of power plants by facilitating the flow of fluids and providing structural support.
Q:Can steel pipes be used for transporting gases?
Yes, steel pipes can be used for transporting gases. Steel pipes are commonly used for various applications including the transportation of gases due to their durability, high tensile strength, and resistance to corrosion. They are often preferred for transporting gases over other materials due to their ability to withstand high pressure and temperature conditions.
Q:What is the difference between steel pipes and copper pipes?
Steel pipes and copper pipes differ in their material composition, durability, cost, and application. Steel pipes are made of an alloy of iron and carbon, providing them with high strength and resistance to corrosion. Copper pipes, on the other hand, are made solely of copper, which offers excellent heat conductivity and resistance to bacterial growth. While steel pipes are more durable and suitable for high-pressure applications, copper pipes are commonly used for plumbing systems due to their malleability, ease of installation, and ability to withstand extreme temperatures. Additionally, copper pipes tend to be more expensive than steel pipes.
Q:Can steel pipes be used for conveying chemicals?
Yes, steel pipes can be used for conveying chemicals. Steel pipes are known for their high strength and durability, making them suitable for transporting various chemicals. Additionally, they are resistant to corrosion, which is crucial when dealing with corrosive substances. However, it is important to consider the specific type of chemical being transported and ensure that the steel pipes are compatible with it to avoid any chemical reactions or damage to the pipes.
Q:What is the pressure rating of steel pipes?
The pressure rating of steel pipes can vary depending on factors such as the size, wall thickness, and specific grade of the steel used. However, steel pipes are commonly available in pressure ratings ranging from a few hundred PSI (pounds per square inch) to several thousand PSI, making them suitable for a wide range of applications.
Q:Are steel pipes suitable for underground gas lines?
Yes, steel pipes are suitable for underground gas lines. They are commonly used due to their strength, durability, and resistance to corrosion, making them a reliable choice for transporting and distributing gas underground.
Q:How are steel pipes measured and specified?
Steel pipes are measured and specified using several key parameters. The most common ones include the outer diameter (OD), wall thickness, and length of the pipe. The outer diameter refers to the measurement of the pipe's outside surface from one end to the other. It is typically expressed in millimeters (mm) or inches (in), and it plays a critical role in determining the pipe's strength and carrying capacity. Different applications require different OD sizes, which can range from a few millimeters to several feet. The wall thickness of a steel pipe refers to the distance between its outer and inner surfaces. It is measured in millimeters or inches and is crucial for determining the pipe's durability and resistance to pressure. Thicker walls can handle higher pressure, making them suitable for applications that require transporting liquids or gases under high pressure. The length of steel pipes is generally specified in meters or feet. Standard pipe lengths are often 6 or 12 meters (20 or 40 feet), but custom lengths can be requested based on project requirements. It is important to note that longer pipes may require additional support to prevent sagging or structural issues. Apart from these primary measurements, steel pipes may also be specified based on other factors such as material grade, manufacturing standard, and surface finish. Material grade refers to the quality and composition of the steel used in the pipe, which determines its strength and corrosion resistance. Manufacturing standards, such as ASTM or API, ensure that the pipes meet specific quality and performance criteria. Surface finish specifications may include factors like galvanized coating, which provides protection against corrosion or other specific requirements based on the intended application. Overall, the measurement and specification of steel pipes involve considering the outer diameter, wall thickness, length, material grade, manufacturing standard, and surface finish. These parameters are crucial in determining the suitability of the pipe for various applications and ensuring its performance and durability in different environments.
Q:Are steel pipes suitable for use in hydropower plants?
Yes, steel pipes are suitable for use in hydropower plants. Steel pipes offer several advantages such as high strength, durability, and corrosion resistance, making them ideal for transporting water or fluids in hydropower plants. Additionally, steel pipes can withstand high pressure and temperature conditions, ensuring smooth and efficient operation of the hydropower plant.
Q:What are the safety precautions while working with steel pipes?
Some safety precautions while working with steel pipes include wearing appropriate personal protective equipment (PPE) such as gloves, safety glasses, and steel-toed boots, using proper lifting techniques to prevent back injuries, ensuring the work area is well-lit and free of obstacles, and using the correct tools and equipment for the job. Additionally, it is important to follow proper safety procedures when handling and storing steel pipes to minimize the risk of accidents or injuries.
Q:What are the typical lengths of steel pipes?
The typical lengths of steel pipes can vary depending on their purpose and application. However, common lengths range from 20 feet (6 meters) to 40 feet (12 meters) in commercial and industrial settings.

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