• SPIRAL STEEL PIPE 42’‘ ASTM API LARGE DIAMETER PIPE System 1
  • SPIRAL STEEL PIPE 42’‘ ASTM API LARGE DIAMETER PIPE System 2
SPIRAL STEEL PIPE 42’‘ ASTM API LARGE DIAMETER PIPE

SPIRAL STEEL PIPE 42’‘ 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 threaded for connection?
Steel pipes are threaded for connection using a process called threading, which involves cutting helical grooves into the pipe's surface. This is typically done using a machine called a pipe threading machine, which rotates the pipe while a cutting tool is held against it, creating the desired threading pattern. The threaded ends of the pipes can then be connected using fittings or couplings to create a secure and leak-proof joint.
Q: Does seamless steel tube have a bend of 135 degrees?
In engineering, it is usually marked as "45 elbow" and has no "135" mark. The angle of the elbow is acute, so there will be no more than 90 degrees elbow.Elbow is a common connecting pipe used in plumbing and heating. It is used for the connection of the bend of pipe, and is used to change the direction of pipe.
Q: What is the maximum allowable stress for steel pipes?
The maximum allowable stress for steel pipes depends on various factors such as the grade of steel, diameter, wall thickness, and the intended application. It is typically determined by industry standards and codes, such as the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code. Therefore, there is no one-size-fits-all answer to this question.
Q: Can steel pipes be used for oil well casing?
Yes, steel pipes can be used for oil well casing. They are commonly used in the oil and gas industry due to their durability, strength, and ability to withstand high pressure and extreme conditions found in oil wells.
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 in hydroelectric power plants for various applications. They are primarily used in the penstock, which is a pipe that carries water from the reservoir to the turbine. The penstock is under high pressure, and steel pipes have the necessary strength and durability to handle the pressure and flow of water. Steel pipes are preferred in hydroelectric power plants due to their high tensile strength, corrosion resistance, and longevity. They can withstand the high-pressure conditions and flow rates of water, ensuring the efficient transfer of water from the reservoir to the turbine. Additionally, steel pipes have the advantage of being easily fabricated and installed. They can be customized to fit specific project requirements and can be welded or bolted together to form the desired length and shape. Furthermore, steel pipes are cost-effective compared to other materials commonly used in hydroelectric power plants, such as concrete or fiberglass. They provide a reliable and cost-efficient solution for conveying water in hydroelectric power plants, contributing to the overall efficiency and effectiveness of the power generation process. In conclusion, steel pipes are a suitable and commonly used material for hydroelectric power plants. They offer the necessary strength, durability, and cost-effectiveness required for conveying water from the reservoir to the turbine, making them an ideal choice for this application.
Q: What are the different types of steel pipe fittings for gas pipelines?
There are several types of steel pipe fittings commonly used for gas pipelines, including elbows, tees, reducers, flanges, and couplings. Elbows are used to change the direction of the pipeline, while tees are used to create branch connections. Reducers are used to connect pipes of different sizes, and flanges are used for connecting pipes with valves or other equipment. Couplings are used to join two pipes together.
Q: Is the diameter of the steel tube indicated by the outer diameter by the wall thickness or by the inside diameter by the wall thickness?
The specification for steel tubes is the outer diameter multiplied by the wall thickness.Generally speaking, the diameter of the pipe can be divided into outer diameter (De), inner diameter (D) and nominal diameter (DN).
Q: How are steel pipes used in the manufacturing of ships?
Steel pipes are used in the manufacturing of ships for various purposes, such as carrying fluids and gases, providing structural support, and facilitating efficient operation of the ship's systems. They are used for plumbing, ventilation, and firefighting systems, as well as for the construction of hulls and other vital components. Overall, steel pipes play a crucial role in ensuring the functionality and safety of ships during their construction and operation.
Q: What kind of argon arc welding wire is used for 16Mn steel pipe?
JB/T4709 recommends H10MnSi, but H10MnSi allows a lower value of strength of 430MPa, which does not match the parent material. I think American Standard is selected according to the selection of welding wire ER70S-6 GB ER50-6 wire can guarantee the equivalent strength of parent materials, and Si, Mn content can also guarantee the deoxidation effect, the weld joint is not easy to produce pores.
Q: Can the KBG25 steel tube hold 4 six types of cables?
1 of the six lines of cross-sectional area of about 25 square millimeters, 4 to 100 flat, KBG25 cross-sectional area of about 490100/490=20.4%, just over the specifications, so short distance and less elbow can be worn. However, due to the construction of pipes are generally not standardized, elbow more, and do not use special elbow (site bending), so KBG25 wearing 4, six kinds of cable are more difficult.

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